CARBÂ® toroidal roller bearings â a revolutionary ... - Acorn Bearings

CARB ® toroidal roller bearings 

– a revolutionary concept

Contents 

The SKF brand now stands for more than ever before, 

and means more to you as a valued customer. 

While SKF maintains its leadership as the hallmark of 

quality bearings throughout the world, new dimensions 

in technical advances, product support and services 

have evolved SKF into a truly solutions-oriented supplier, 

creating greater value for customers. 

These solutions encompass ways to bring greater 

productivity to customers, not only with breakthrough 

application-specific products, but also through leadingedge 

design simulation tools and consultancy services, 

plant asset efficiency maintenance programs, and the 

industry’s most advanced supply management 

techniques. 

The SKF brand still stands for the very best in rolling 

bearings, but it now stands for much more. 

SKF – The knowledge engineering company 

1 Product information.................................................. 3 

The winning combination............................................. 3 

SKF toroidal roller bearings with revolutionary 

design characteristics.................................................. 4 

SKF Explorer class bearings ....................................... 5 

The range for all requirements .................................... 6 

Availability.................................................................... 7 

Bearing features and benefits ..................................... 7 

The CARB toroidal roller bearing – 

the cornerstone of the new self-aligning system...... 8 

Successful in service ................................................... 10 

2 Recommendations....................................................12 

Selection of bearing size ............................................ 12 

Longer life or downsizing ............................................ 12 

Design of bearing arrangements ............................... 14 

Radial location ............................................................ 14 

Axial location .............................................................. 16 

Design of adjacent components ................................ 18 

Sealing the bearing arrangement ................................ 20 

Lubrication ................................................................... 22 

Grease lubrication ...................................................... 22 

Deviating conditions ................................................... 24 

Oil lubrication .............................................................. 25 

Mounting ...................................................................... 26 

Mounting on cylindrical seatings................................. 26 

Mounting on tapered seatings..................................... 27 

Dismounting ................................................................. 34 

Dismounting from a cylindrical seating ....................... 34 

Dismounting from a tapered seating ........................... 35 

SKF concept for cost saving ....................................... 36 

3 Product data ..............................................................37 

Bearing data – general ................................................ 37 

Product tables .............................................................. 44 

CARB toroidal roller bearings ..................................... 44 

Sealed CARB toroidal roller bearings.......................... 56 

CARB toroidal roller bearings on adapter sleeve ........ 58 

CARB toroidal roller bearings on withdrawal sleeve ... 68 

Other associated SKF products ................................. 78 

SKF – The knowledge engineering company ............ 82 

2

1 Product information 2 Recommendations 3 Product data 

The winning combination Page ............. 12 Page ............. 37 

The winning combination 

1 

Self-alignment ... 

Self-aligning bearings are the hallmark 

of SKF – not surprising since SKF was 

founded in 1907, based on the invention 

of the self-aligning ball bearing by Sven 

Wingquist. But the development did 

not stop there, other SKF inventions 

followed: the spherical roller bearing in 

1919 and the spherical roller thrust 

bearing in 1939. 

Self-alignment is called for 

• when misalignment exists as a 

result of manufacturing or mounting 

errors 

• when shaft deflections occur under 

load 

and these have to be compensated for 

in the bearing arrangement without 

negative effects on performance or 

any reduction in bearing service life. 

... and axial 

displacement ... 

SKF was also heavily involved in the 

development of bearings having rings 

that can be axially displaced with 

respect to each other. In 1908, for 

example, the cylindrical roller bearing 

in its modern version was largely 

developed by Dr.-Ing. Josef Kirner of 

the Norma Compagnie in Stuttgart-Bad 

Cannstatt, which became a subsidiary 

of AB SKF. 

Cylindrical roller bearings are applied 

when 

• heavy radial loads and relatively 

high speeds prevail and 

• thermal changes in shaft length 

must be accommodated in the bearing 

with as little friction as possible – 

provided, of course, that there is no 

significant misalignment. 

... combined for success 

Previously, it was always necessary to 

compromise. Because misalignment or 

shaft bending makes the use of selfaligning 

bearings essential – and, 

depending on load and speed, the 

choice lay between self-aligning ball 

bearings and spherical roller bearings. 

However, in contrast to cylindrical 

roller bearings, those bearings cannot 

accommodate important axial displacements 

within the bearing. 

Therefore, it was necessary for one 

of the bearings to move axially on its 

seating in the housing. Such movement 

is always accompanied by considerable 

friction, which produces internal axial 

forces in the bearing arrangement. 

The result is a shortened bearing service 

life and relatively high costs for maintenance 

and repairs. 

Today, this is a thing of the past. 

Because Magnus Kellström, a product 

designer at SKF, had a brilliant idea; 

he invented the toroidal roller bearing. 

This bearing not only can compensate 

for misalignment without friction, but 

also for changes in shaft length within 

the bearing. Thus a completely new 

type of bearing for non-locating 

arrangements has become available 

to the engineering world. 

It is no longer necessary to compromise, 

and there are added benefits 

too – much longer service life for the 

complete bearing arrangement and 

minimized maintenance and repair 

costs. 

Self-alignment … 

… and axial 

displacement … 

… combined in 

a toroidal roller 

bearing 

3


Customer benefits Page ............. 12 Page ............. 37 

SKF toroidal roller bearings 

with revolutionary design 

characteristics 

The SKF toroidal roller bearing represents 

one of the most important 

breakthroughs in rolling bearing technology 

over the past sixty years. The 

bearing was introduced to the market 

the market in 1995 under the SKF 

trademark CARB ® . 

The CARB toroidal roller bearing is 

a completely new type of roller bearing, 

which offers benefits that were previously 

unthinkable. Irrespective of 

whether a new machine is to be designed 

or an older machine maintained 

there are benefits to be gained by using 

a toroidal roller bearing. Which of these 

benefits is realized depends on the 

machine design and its operating parameters. 

The CARB bearing is a single row 

roller bearing with relatively long, slightly 

crowned rollers. The inner and outer 

ring raceways are correspondingly 

concave and symmetrical (➔ fig 1 ). 

The outer ring raceway geometry is 

based on a torus (➔ fig 2 ), hence 

the term toroidal roller bearing. 

The SKF toroidal roller bearing is 

designed as a non-locating bearing 

that combines the self-aligning ability 

of a spherical roller bearing with the 

ability to accommodate axial displacement 

like a cylindrical or needle roller 

bearing. Additionally, if required, the 

toroidal roller bearing can be made as 

compact as a needle roller bearing. 

An application incorporating an SKF 

toroidal roller bearing provides benefits 

outlined in the following. 

Self-aligning capability 

The self-aligning capability of the 

CARB bearing is particularly important 

in applications where there is misalignment 

as a result of manufacturing or 

mounting errors or shaft deflections. 

To compensate for these conditions, 

a CARB bearing can accommodate 

misalignment up to 0,5 degrees between 

the bearing rings without any 

detrimental effects on the bearing or 

bearing service life (➔ fig 3 ). 

Axial displacement 

Previously, only cylindrical and needle 

roller bearings could accommodate 

thermal expansion of the shaft within 

the bearing. Today, however, the CARB 

bearing can be added to that list (➔ 

fig 4 ). The inner and outer rings of 

a CARB bearing can be displaced, 

with respect to each other, up to 10 % 

of the bearing width. By installing the 

bearing so that one ring is initially displaced 

with respect to the other one, 

it is possible to extend the permissible 

axial displacement in one direction. In 

contrast to cylindrical and needle roller 

bearings that require accurate shaft 

alignment, this is not needed for toroidal 

roller bearings, which can also cope 

with shaft deflection under load. This 

provides a solution to many problem 

cases. 

Long system life 

The ability to accommodate misalignment 

plus the ability to accommodate 

axial displacement with virtually no 

friction enables a CARB bearing to 

provide benefits to the bearing arrangement 

and its associated components 

(➔ fig 5 ). 

The CARB toroidal 

roller bearing 

The torus 

Angular 

misalignment 

The most frequently 

occurring misalignments 

in operation 

are not a problem 

for a CARB toroidal 



Changes in shaft 

length are accommodated 

within the 

bearing virtually 

without friction 

Freedom 

Permissible angular 

misalignment + axial 

displacement within 

the bearing 

Fig 

Fig 

Fig 

Fig 

Fig 

1 

2 

3 

4 

5 

4


Customer benefits Page ............. 12 Page ............. 37 

axial vibration 

Fig 

6 

Deviations from 

cylindrical form are 

less problematic 

Demands on accuracy 

of form of the 

bearing seatings 

are less stringent, 

making simpler and 

less costly arrangements 

possible 

Fig 

– conventional arrangement 

– with CARB as non-locating bearing 

time 

Axial vibration 

With a CARB bearing axial vibrations are 

considerably reduced, meaning longer 

service life and quieter operation 

Full dimensional interchangeability 

CARB advantages can be fully exploited 

when refurbishing non-locating bearing 

arrangements designed for self-aligning as 

well as rigid bearings 

7 

• Internal axial displacement is virtually 

without friction; there are no internally 

induced axial forces, thus operating 

conditions are considerably improved. 

• The non-locating bearing as well as 

the locating bearing only need to 

support external loads. 

• The bearings run cooler, the lubricant 

lasts longer and maintenance 

intervals can be appreciably 

extended. 

Taken together, these benefits contribute 

to a longer system life. 

High load carrying capacity 

CARB toroidal roller bearings can 

accommodate very high radial loads. 

This is due to the optimized design of 

the rings combined with the design 

and number of rollers. The large number 

of long rollers make CARB bearings 

the strongest of all aligning roller 

bearings. Due to their robust design, 

CARB bearings can cope with small 

deformations and machining errors of 

the bearing seating (➔ fig 6 ). The rings 

accommodate these small imperfections 

without the danger of edge 

stresses. The high load carrying 

capacity plus the ability to compensate 

for small manufacturing or installation 

errors provide opportunities to 

increase machine productivity and 

uptime. 

Increased performance 

or downsizing 

For bearing arrangements incorporating 

a CARB toroidal roller bearing as nonlocating 

bearing, internally induced axial 

forces are prevented. Together with high 

load carrying capacity this means that 

• for the same bearing size in the 

arrangement, performance can be 

increased or the service life extended, 

or 

• new machine designs can be made 

more compact to provide the same, 

or even higher performance. 

Reduced vibration 

Self-aligning ball or spherical roller 

bearings in the non-locating position 

need to be able to slide within the 

housing seating. This sliding, however, 

causes axial vibrations which can reduce 

bearing service life considerably. 

Bearing arrangements that use 

CARB toroidal roller bearings as the 

non-locating bearing are stiff because 

the CARB bearing can be radially and 

axially located in the housing and on 

the shaft. This is possible because 

thermal expansion of the shaft is 

accommodated within the bearing. 

The stiffness of the bearing arrangement, 

combined with the ability of the 

CARB bearing to accommodate axial 

movement, substantially reduces 

vibrations within the application to 

increase service life of the bearing 

arrangement and related components 

(➔ fig 7 ). 

1 

Fig 

8 

Full dimensional interchangeability 

The boundary dimensions of SKF 

CARB toroidal roller bearings are in 

accordance with ISO 15:1998. This provides 

full dimensional interchangeability 

with self-aligning ball bearings, cylindrical 

roller and spherical roller bearings 

in the same Dimension Series. The 

CARB bearing range also covers wide 

bearings with low cross sections normally 

associated with needle roller 

bearings (➔ fig 8 ). 

SKF Explorer class 

bearings 

All CARB bearings are manufactured to 

the SKF Explorer performance class. 

5


Assortment Page ............. 12 Page ............. 37 

The range for all requirements 

Fig 

1 

C 39 C 49 C 59 C 69 C 30 C 40 C 50 C 60 C 31 C 41 C 22 C 32 C 23 

Overview of product range 

The SKF standard range of CARB toroidal 

roller bearings comprises bearings in 

13 ISO Dimension Series (➔ fig 1 ). The 

smallest bearing has a bore diameter of 

25 mm and the largest one a bore diameter 

of 1250 mm. Bearings with a bore 

diameter up to 1800 mm can be produced. 

Whether a new bearing arrangement 

is to be designed or an existing 

arrangement upgraded most often there 

is an appropriate CARB toroidal roller 

bearing available or such a bearing could 

be manufactured. 

SKF toroidal roller bearings are produced 

in 

• a caged version (➔ fig 2 ) as well as 

• a full complement version (➔ fig 3 ) 

SKF also produces special executions 

to suit particular applications, e.g. 

• bearings with case hardened inner 

rings to allow a heavy interference 

fit on the shaft/journal of dryer or 

Yankee cylinders, for example; 

• bearings with a surface hardened 

cage for vibrating screens; 

• sealed bearings, for example, for 

continuous casting plants (➔ fig 4 ). 

The permissible misalignment and 

axial displacement as well as the 

load carrying capacity are lower 

than for the corresponding bearing 

without seals. 

with 

• a cylindrical bore, or 

• a tapered bore. 

The tapered bore has a taper of 1:12 

or 1:30, depending on the Dimension 

Series. 

In addition to the standard bearings, 

6


Assortment Page ............. 12 Page ............. 37 

Fig 

2 

Fig 3 

Fig 4 

1 

Caged bearing 

For heavy loads and relatively high speeds 

Full complement bearing 

For very heavy loads and low speeds 

Sealed bearing 

Lubricated for life and protected against 

contamination 

Availability 

The product range is shown in the 

product tables starting on page 44. 

SKF recommends checking availability 

of those bearings marked with a triangle. 

To do that, contact your local SKF 

representative or SKF distributor. The 

standard range is being continuously 

extended and the intention is to manufacture 

all the products shown in the 

product tables in a few years time. 

Bearing benefits 

Already well proven in service, toroidal 

roller bearings enable all types of 

machines and equipment to be 

• smaller, 

• lighter, 

• more cost-effective, and 

• more operationally reliable. 

Replacing other non-locating bearings 

with an equivalent CARB bearing can, 

depending on the application, improve 

perform-ance and uptime while decreasing 

maintenance. Why not put 

CARB bearings to the test and reap 

the benefits they can provide? 

7


Self-aligning bearing system Page ............. 12 Page ............. 37 

The CARB toroidal roller bearing 

– the cornerstone of the new 

self-aligning bearing system 

The conventional solution 

Until recently a self-aligning bearing 

system consisted of two self-aligning 

ball bearings if there were high speeds 

and light loads, or two spherical roller 

bearings when there were heavy loads 

and moderate speeds. These bearing 

systems are simple, have good load 

carrying capacity and can compensate 

for misalignment resulting from manufacturing 

or mounting errors as well as 

shaft deflections (➔ fig 1 ). So far, so 

good – but what happens if the shaft 

were to expand axially? 

In a traditional bearing arrangement, 

axial expansion of the shaft is accommodated 

by the non-locating bearing. 

The fits for this bearing are selected so 

that one of the bearing rings will be 

able to move axially on its seating as 

the shaft expands. Generally this 

movement is between the outer ring 

and the housing seating. This movement 

is always accompanied by friction, 

which gives rise to induced axial 

forces in both the bearings (➔ fig 2 ). 

In addition, the movement of the loose 

bearing on its seating can create damaging 

vibrations because the movement 

is ”stick-slip” and not smooth (➔fig 3 ). 

The loose fit has a negative effect 

on the stiffness of the bearing arrangement. 

The bearing ring with the loose 

fit can also begin to “wander”, which 

can wear the seating and lead to fretting 

corrosion and possibly “weld” 

the ring to its seating (➔ fig 4 ). 

The new solution 

Today, the CARB toroidal roller bearing 

is available for the non-locating position 

in a self-aligning bearing system. 

It is no longer necessary to compromise. 

8 

Conventional 

solution 

Two spherical roller 

bearings (or selfaligning 

ball bearings) 

compensate 

easily for angular 

misalignment of 

the inner ring with 

respect to the 

outer ring 

Axial expansion 

of the shaft can 

influence the load 

distribution in the 


Load conditions 

in a conventional 

solution 

Changes in axial 

force in a non-locating 

bearing during 

the machine start-up 

phase; internal axial 

forces of corresponding 

magnitude 

are produced in the 

locating bearing 

In a non-locating 

bearing which has 

been clamped in its 

housing bore seating, 

heavy axial 

forces prevail in the 

bearing arrangement 

after the startup 

phase and dramatically 

shorten 

bearing service life 

F a /F r 

0,2 

0,1 

0 

F a /F r 

1,5 

1 

0,5 

0 

Fig 

Fig 2 

F r 

t 

t 

Fig 

Fig 

1 

3 

4


Self-aligning bearing system Page ............. 12 Page ............. 37 

1 

°C 

Fig 

Fig 

Fig 

5 

6 

7 

The new solution 

A spherical roller bearing 

or a self-aligning 

ball bearing as the 

locating bearing and 

a CARB toroidal roller 

bearing as the nonlocating 

bearing compensate 

for angular 

misalignment of the 

rings resulting from 

errors of alignment or 

deflection under load 

as well as thermal 

changes in shaft 

length, virtually without 

friction 

There are no internally 

induced axial 

forces. The rings 

of the non-locating 

bearing should be 

axially and radially 

located 

CARB toroidal roller bearings are 

able to compensate for misalignment 

and accommodate axial displacements 

within the bearing (➔ fig 5 ). 

This means that both rings of the nonlocating 

bearing can be axially located 

in the housing and on the shaft (➔ fig 

6 ). If it is necessary to secure the 

rings so that they cannot “creep”, they 

can be mounted with an interference 

fit, thus enhancing the radial stiffness 

of the bearing arrangement. 

This is an optimal solution for applications 

with undetermined load direction, 

e.g. vibrating applications, because 

internal preload and wear to the bearing 

seating in the housing are eliminated. 

No longer is there a compromise 

between a tight fit and axial freedom. 

A CARB toroidal roller bearing is 

designed to accommodate axial displacement 

without inducing additional 

axial internal forces or friction (➔ fig 6 ). 

This means that the loads acting on the 

bearing are determined exclusively 

by external radial and axial forces. 

Because of this, a bearing system 

incorporating a CARB bearing will 

have lower loads and better load distribution 

than a conventional bearing 

system. This translates into lower operating 

temperatures, higher operating 

viscosities, extended relubrication 

intervals, and a significantly longer 

service life for both the bearings and 

the lubricant (➔ fig 7 ). 

With a CARB toroidal roller bearing 

F r 

9 

Lower operating 

temperatures extend 

relubrication intervals 

and bearing 

service life 

in the non-locating position, the many 

excellent design characteristics and 

properties of SKF spherical roller bearings 

and self-aligning ball bearings can 

be fully exploited. This provides new 

opportunities to further optimize 

machine design.


Application areas Page ............. 12 Page ............. 37 

Successful in service 

Although a recent invention, the CARB 

toroidal roller bearing can be found in 

a variety of applications spanning 

almost every industry. This bearing 

has already proven itself and in many 

cases has outperformed expectations 

by 

• extending service life, 

• increasing reliability, 

• reducing maintenance, and 

• providing more compact designs. 

One of the major application areas 

for CARB toroidal roller bearings is in 

steelmaking and particularly in continuous 

casters where the multitude of 

guide rollers are subjected to the most 

difficult operating conditions. Paper 

machines are another important application 

where shaft deflections and thermal 

changes in roll length of up to 10 mm 

have to be accommodated. 

These are not the only fields where 

CARB toroidal roller bearings perform 

successfully. They are also in service 

in gearboxes, large electric motors, 

wind power plants, water turbines, bow 

thrusters, crane wheels, separators, 

centrifuges, presses, staking machines 

for tanneries, rotary cultivators and 

mulchers. 

Main application areas 

• Steelmaking and rolling mills 

• Conveyors and roller beds 

• Paper machines 

• Fluid machinery 

• Crushers 

• Gearboxes of all types 

• Textile machines 

• Food and beverage 

processing machines 

• Agricultural machinery 

• Vibrating screens 

Major demands 

• Freedom 

• High load carrying capacity 

• High operational reliability 

• Long service life 

• Reduced maintenance 

• Low operational costs 

• Compact design 

• Enhanced performance 

• High power density 

Solution


Application areas Page ............. 12 Page ............. 37 

To facilitate the incorporation of 

CARB toroidal roller bearings in new 

as well as existing machines, please 

consult the SKF application engineering 

service.


Page ............. 3 System life Page ............. 37 

Selection of bearing size 

To calculate bearing size or the basic 

rating life for a toroidal roller bearing 

it is possible to use all the known and 

standardized (ISO 281) calculation 

methods. However, it is recommended 

that the SKF Life Method be applied 

so that the enhanced performance of 

SKF bearings can be fully exploited. 

Detailed information can be found in the 

SKF General Catalogue in the section 

“Selection of bearing size” or in the 

“SKF Interactive Engineering Catalogue” 

available on CD-ROM or online 

at www.skf.com. 

For a self-aligning bearing system 

that uses an SKF Explorer spherical 

roller bearing and a CARB bearing, 

system life can be calculated using the 

SKF rating life equation: 

L nm,Sys = 

9/8 

where 

L nm,Sys 

L nm,SRB 

L nm,CARB = 

1 

L nm,SRB 

9/8 

= SKF rating life for the bearing 

system (at 100 – n % 

reliability), millions of revolutions 

= SKF rating life for the locating 

spherical roller bearing 

(at 100 – n % reliability), 

millions of revolutions 

SKF rating life for the nonlocating 

CARB toroidal 

roller bearing (at 100 – n % 

reliability), millions of revolutions 

1 

+ 

1 

L nm,CARB 

9/8 

Longer life or downsizing 

When used in a self-aligning bearing 

system, the CARB bearing prevents 

internally induced axial forces from 

occuring. This is in contrast to conventional 

self-aligning bearing systems 

with two spherical roller bearings or 

self-aligning ball bearings where the 

induced internal axial forces can be 

20 % or more of the radial load acting 

on the non-locating bearing. These 

additional forces represent a sizeable 

proportion of the total load that cannot 

be neglected and can result in 

• the bearing system not achieving the 

requisite life, or 

• larger bearings being used to compensate 

for the additional forces. 

Because a CARB toroidal roller bearing 

prevents internally induced axial 

forces from occuring, the load conditions 

in the bearing arrangement can 

be predicted accurately since the 

locating bearing is only subjected to its 

portion of the external radial and axial 

loads, while the non-locating bearing 

is only subjected to its portion of the 

radial load. 

Whether a spherical roller bearing 

(➔ diagram 1 ) or a self-aligning ball 

bearing (➔ diagram 2 ) is used in the 

locating position, the new self-aligning 

bearing system can substantially 

increase the service life of a bearing 

arrangement. It is also worth noting 

that, even if smaller bearings are used, 

it is often possible to achieve system 

lives that are longer compared to the 

traditional systems. This can be 

exploited by downsizing adjacent 

components and reducing costs. 

To take full advantage of the benefits 

offered by the new self-aligning 

system it is necessary to carefully 

select the bearing size – at the nonlocating 

as well as the locating side. 

For assistance, contact the SKF application 

engineering service. 

12


Page ............. 3 System life Page ............. 37 

Compare the life of a conventional selfaligning 

bearing system with spherical 

roller bearings with a bearing system 

containing a CARB toroidal roller bearing 

and a spherical roller bearing 

Diagram 

1 

1 

C 3148 23148 

2 

C 3144 23144 

0,5 

Relative life of the system 

23148 23148 

0 

0 0,05 0,1 0,15* 0,2 0,25 0,3 0,35 0,4 

Coefficient of friction µ 

* Typical value for steel on cast iron 

Compare the life of a conventional selfaligning 

bearing system with self-aligning 

ball bearings with a bearing system 

containing a CARB toroidal roller bearing 

and a self-aligning ball bearing 

6 

Diagram 

2 

5 

C 2222 2222 

4 

3 

Relative life of the system 

2 

C 2220 2220 

1 

2222 2222 

0 

0 0,05 0,1 0,15* 0,2 0,25 0,3 0,35 0,4 

Coefficient of friction µ 

* Typical value for steel on cast iron 

13


Page ............. 3 Radial location Page ............. 37 

Design of bearing arrangements 

Two bearings are generally required to 

support, guide and locate a shaft in 

the radial and axial directions. To do 

this, one bearing is designated the 

locating bearing and the other is the 

non-locating bearing. 

In traditional self-aligning bearing 

systems, the locating bearing locates 

the shaft axially in its housing while 

the non-locating bearing typically 

moves in its housing to accommodate 

axial expansion of the shaft. 

With the new SKF self-aligning 

bearing system, a CARB toroidal roller 

bearing is used in the non-locating 

position and either a spherical roller 

bearing (➔ fig 1 ) or a self-aligning 

ball bearing (➔ fig 2 ) is used in the 

locating position. Because a CARB 

bearing can accommodate axial 

expansion internally like a cylindrical 

roller bearing, it prevents internally 

induced axial forces from occuring that 

would otherwise that would otherwise 

be present if the bearing had to slide 

on its seating in the housing. This ability 

to accommodate internal axial forces 

allows the bearing rings to be axially 

located on the shaft and in the housing. 

Radial location 

To take advantage of the very high load 

carrying capacity and full life potential of 

a toroidal roller bearing, the bearing 

rings must be fully supported around 

their whole circumference and across 

the full width of the outer ring. 

Selecting the proper fit 

To locate a shaft radially, most applications 

require an interference fit between 

the bearing rings and their seatings. 

However, if easy mounting and dismounting 

are required, the outer ring 

will have a looser fit. 

Recommendations for suitable shaft 

diameter and housing bore tolerances 

for CARB toroidal roller bearings are 

given in tables 1 , 2 and 3 . These 

recommendations apply to solid steel 

shafts and housings made from cast 

iron or steel. 

Generally, CARB toroidal roller bearings 

follow the fit recommendations 

for spherical roller bearings on shafts 

and in housings. However, a spherical 

roller bearing on the non-locating side 

must be axially free, which requires a 

loose housing fit – this is not necessary 

for bearing arrangements using a CARB 

toroidal roller bearing. CARB bearings 

(and locating spherical roller bearings) 

can therefore utilise the advantages of 

tight outer ring fits if mounting and 

dismounting allow this, but for normal, 

stationary outer ring load it is not necessary. 

For example a K7 fit is applied to 

bearings in the split housing for a fan 

with an unbalanced fan rotor and a P7 

fit applied to a non-split housing. 

Bearings with a tapered bore are 

mounted either directly on a tapered 

journal or on an adapter or a withdrawal 

sleeve on cylindrical shaft seatings. 

The fit of the inner ring in these 

cases depends on how far the ring is 

driven up the tapered seating. 

Accuracy of associated components 

The accuracy of the cylindrical seatings 

on the shaft and in the housing bore 

should correspond to that of the bearing. 

For CARB toroidal roller bearings 

the shaft seating should be tolerance 

grade 6 and the housing seating grade 

7. For an adapter or withdrawal sleeve, 

wider diameter tolerances can be 

SKF self-aligning bearing system with a spherical roller 

bearing at the locating side and a CARB toroidal roller bearing 

at the non-locating side 

SKF self-aligning bearing system with a self-aligning ball 

bearing at the locating side and a CARB toroidal roller bearing 

at the non-locating side 

Fig 1 

Fig 2 

14


Page ............. 3 Radial location Page ............. 37 

adopted for the cylindrical seating on 

the shaft, e.g. grade 9 or 10. 

The cylindricity as defined in 

ISO 1101-1996 for the bearing seating 

should be 1 or 2 grades better than 

the recommended dimensional tolerance 

depending on the requirements. 

For example, a shaft seating machined 

to tolerance m6 should have a cylindricity 

grade 5 or 4. 

Conditions Examples Shaft diameter (mm) Tolerance 

over incl. 

Bearings with cylindrical bore 

Rotating inner ring load or direction of load indeterminate 

Normal and General 40 k5 

heavy loads engineering, 40 65 m5 

(P > 0,06 C) electric motors, 65 100 m6 

pumps, 100 140 n6 

gearboxes 140 280 p6 

280 500 r6 1) 

500 r7 1) 

Table 

1 

2 

Very heavy loads and shock loads 50 100 n6 1) 

with difficult working conditions 100 140 p6 1) 

(P > 0,12 C) 140 r6 1) 

Bearings with tapered bore on adapter or withdrawal sleeves 

Normal loads and/or normal speeds 

Heavy loads and/or high speeds 

h10/IT7/2 

h9/IT5/2 

Stationary inner ring load 

Easy dismounting unnecessary 

h6 

Easy dismounting desirable g6 2) 

Fits for solid steel 

shafts 

1) 

Bearings with radial internal clearance greater than Normal may be necessary 

2) 

Tolerance f6 can be selected for large bearings to provide easy displacement 

Table 

2 

Conditions Examples Tolerance Remarks 

Rotating outer ring load 

Heavy loads and Crushers, N6 Bearing outside diameter < 160 mm 

shock loads vibrating P6 Bearing outside diameter ≥ 160 mm 

screens, fans 

Stationary outer ring load 

Loads of all kinds General H7 

engineering 

Direction of load indeterminate 

Heavy shock loads 

M7 

Normal and General K7 

heavy loads engineering, 

(P > 0,06 C) electric motors, H7 Easy mounting of bearing required 

pumps 

Fits for non-split 

cast iron and steel 

housings 

Table 

3 

Conditions Examples Tolerance 

Stationary outer ring load 

Loads of all kinds General H7 

engineering 

Direction of load indeterminate 

Loads of all kinds General J7 

engineering, 

electric motors, 

pumps 

Fits for split cast 

iron and steel 

housings 

15


Page ............. 3 Axial location Page ............. 37 

Axial location 

The rings of CARB toroidal roller bearings 

should be axially located on both 

sides on the shaft as well as in the 

housing. SKF recommends arranging 

the bearing rings so that they abut a 

shoulder on the shaft or in the housing. 

Inner rings can be locked in position 

using 

• a shaft (lock) nut (➔ fig 3 ), 

• a retaining ring (➔ fig 4 ) or 

• an end plate screwed to the shaft 

end (➔ fig 5 ). 

Abutment and fillet dimensions 

The abutment and fillet dimensions, 

which include the diameters of shaft 

and housing shoulders, spacer sleeves 

etc. have been determined so that 

adequate abutment surfaces are provided 

for the side faces of the bearing 

rings without any danger of the rotating 

parts being fouled. The recommended 

abutment and fillet dimensions for each 

individual bearing can be found in the 

product tables. 

Outer rings are usually secured in 

position in the housing by the end 

cover (➔ fig 6 ). 

Instead of integral shaft and housing 

shoulders CARB toroidal roller bearings 

can be mounted against 

• spacer sleeves (➔ fig 7 )or 

• retaining rings (➔ fig 8 ). 

Bearings with a tapered bore that are 

mounted 

• directly onto a tapered journal are 

usually secured to the shaft with a 

nut on the threaded section (➔ fig 9 ), 

or 

• on an adapter sleeve and a stepped 

shaft are secured against a spacer 

ring (➔ fig 10), or 

• on a withdrawal sleeve against 

a shaft shoulder are secured by 

a shaft nut (➔ fig 11 ) or an end 

plate (➔ fig 12). 

Inner ring located 

axially with a 

shaft nut 

Fig 

3 


axially with a 

retaining ring 

Fig 

4 

16


Page ............. 3 Axial location Page ............. 37 

Fig 

5 


axially with an end 

plate 

Fig 

9 

Inner ring on a 

tapered shaft held 

in place by a shaft 

nut 

2 

Fig 

6 

Outer ring located 

axially with an end 

cover 

Fig 

10 

Inner ring on an 

adapter sleeve 

and a stepped 

shaft, axially 

located against 

a spacer ring 

Fig 

7 

Spacer sleeves 

used to axially 

locate the inner 

and outer rings 

Fig 

11 

Inner ring on a withdrawal 

sleeve and 

a stepped shaft, 

axially located by 

a shaft nut 

Fig 

8 

Retaining rings 

used to axially 

locate the bearing 

rings 

Fig 

12 

Inner ring on a withdrawal 

sleeve and 

a stepped shaft, 

axially located by 

an end plate 

17


Page ............. 3 Associated components Page ............. 37 

Design of adjacent 

components 

Space on the sides of the bearing 

To enable axial displacement of the 

shaft relative to the housing, space 

must be provided on both sides of 

the bearing as indicated in fig 13 . 

The actual value for the width of this 

space can be estimated based on 

It is particularly important when 

designing large bearing arrangements 

to take steps so that the mounting and 

dismounting of the bearings are facilitated 

or actually made possible. 

C a 

Fig 

13 

• the value C a (from the product 

tables), 

• the axial displacement of the bearing 

rings from the central position 

expected in operation, and 

• the displacement of the rings caused 

by misalignment 

Free space on 

both sides of the 

bearing 

Fig 

14 

C areq = C a + 0,5 (s + s mis ) 

or 

C areq = C a + 0,5 (s + k 1 B α) 

where 

C areq = width of space required on each 

side of the bearing, mm 

C a = minimum width of space required 

on each side of the bearing, mm 

(➔ product tables) 

s = thermal change in shaft length, 

mm 

s mis = axial displacement of roller 

complement caused by misalignment, 

mm 

k 1 = misalignment factor 


B = bearing width, mm 


α = angular misalignment, degrees 

See also under “Axial displacement” on 

page 40. 

Normally, the bearing rings are 

mounted so that they are not displaced 

with respect to each other. However, 

if considerable thermal changes 

in shaft length can be expected, the 

inner ring can be mounted offset relative 

to the outer ring up to the permissible 

axial displacement s 1 or s 2 in the 

direction opposite to the expected 

thermal elongation (➔ fig 14 ). In this 

way, the permissible axial displacement 

can be appreciably extended, an 

advantage which is made use of in the 

bearing arrangement of drying cylinders 

in papermaking machines. 

By mounting the 

outer ring purposely 

displaced 

with regard to the 

inner ring the 

permissible axial 

displacement can 

be extended 


roller bearing on 

a tapered journal 

with oil duct and 

distributor groove 



arrangement with 

oil ducts and distributor 

grooves in 

the shaft and 

housing 

s 1 

s 2 

Fig 

Fig 

15 

16 

18


Page ............. 3 Associated components Page ............. 37 

Threaded holes for the oil injection 

method 

If the oil injection method is to be used 

• for mounting and dismounting 

bearings on tapered journals 

(➔ fig 15 ) or 

• for dismounting bearings on or in 

cylindrical seatings on the shaft or 

in the housing 

it is necessary to provide oil ducts and 

distributor grooves in the seating on 

the shaft or in the housing (➔ fig 16 ). 

The distance of the distributor groove 

from the side at which the bearing is to 

be mounted and/or dismounted should 

correspond to approximately a third of 

the bearing width. Recommended 

dimensions for the distributor grooves, 

the oil ducts and the appropriate 

threads for the connections are given 

in tables 4 and 5 . 

2 

Recommended dimensions for oil ducts 

and distributor grooves 

Threaded connection holes 

Table 

4 

Table 

5 

L 

L 

3 

Gc 

G a 

N 

60° 

Gb 

c 

h a 

r a 

b a 

N a 

N a 

G a 

G Gb 

Design A 

Design B 

Bearing seating Dimensions 

diameter b a h a r a N 

over incl. 

Thread 

G a 

Design 

G b 

Dimensions 

1) 

G c N a 

max 

mm 

mm 

– – mm 

100 3 0,5 2,5 2,5 

100 150 4 0,8 3 3 

150 200 4 0,8 3 3 

200 250 5 1 4 4 

250 300 5 1 4 4 

300 400 6 1,25 4,5 5 

400 500 7 1,5 5 5 

500 650 8 1,5 6 6 

650 800 10 2 7 7 

M 6 A 10 8 3 

G 1/8 A 12 10 3 

G 1/4 A 15 12 5 

G 3/8 B 15 12 8 

G 1/2 B 18 14 8 

G 3/4 B 20 16 8 

800 1 000 12 2,5 8 8 

1) Effective threaded length 

19


Page ............. 3 Seals Page ............. 37 

Sealing the bearing 

arrangement 

When selecting the most suitable 

sealing arrangement for a self-aligning 

bearing arrangement it is necessary to 

pay particular attention to 

• the angular misalignment of the 

shaft and 

• the magnitude of the axial 

displacement. 

Otherwise the general selection criteria 

presented in the SKF General Catalogue 

(and the “SKF Interactive Engineering 

Catalogue”) apply and all types 

of seals can be used. 

Non-contact seals are to be preferred 

when the operating conditions 

involve 

Some seal types are supplied as 

standard with SKF bearing housings 

and include a double-lip contact seal, 

a labyrinth seal as well as a Taconite 

seal (➔ fig 21 ). Additional information 

can be found in the brochure 4403 

“SNL plummer block housings solve 

the housing problems”. 

Reference 

Additional information about radial 

shaft seals, V-ring seals or mechanical 

seals can be found in the 

SKF catalogue 4006 “CR seals” or 

in the “SKF Interactive Engineering 

Catalogue” on CD-ROM or online 

at www.skf.com. 

• high speeds, 

• large axial displacements, 

• high temperatures, 

CR seals 

and the sealing position is not directly 

exposed to contamination. The shaft 

should be horizontal. 

The simple gap-type seal (➔ fig 17 ) 

is very suitable for sealing the nonlocating 

arrangement of self-aligning 

bearing systems. The size of the gap 

can be adapted to the misalignment of 

the shaft and is not limited in any way. 

Single or multi-stage labyrinth seals 

are obviously more efficient than the 

simple gap-type seal, but are more 

expensive. With CARB toroidal roller 

bearings, the labyrinth passages should 

be arranged axially in order to provide 

freedom of axial movement for the 

shaft in operation. If considerable 

misalignment is expected in operation, 

the passages should be angled (➔ fig 

18 ). When split housings are used, 

labyrinth seals with radially arranged 

passages can be used, provided axial 

movement of the shaft relative to the 

housing is not limited (➔ fig 19 ). 

Radial shaft seals are contact seals 

that are suitable for sealing greased or 

oil lubricated CARB toroidal roller bearings, 

provided misalignment is slight 

and the seal lip counterface is sufficiently 

wide (➔ fig 20 ). 

20


Page ............. 3 Seals Page ............. 37 

Labyrinth seal 

with radially 

arranged 

passages 

Fig 

19 

2 

Fig 

17 

Gap-type seal 

Radial shaft seal 

Fig 

20 

Fig 

18 

Labyrinth seal 

with angled 

passages 

Taconite seal 

Fig 

21 

21


Page ............. 3 Grease lubrication Page ............. 37 

Lubrication 

CARB toroidal roller bearings can be 

lubricated with grease as well as oil. 

There is no strict rule for when grease 

or oil should be used. 

Grease has the advantage over oil 

that it is more easily retained in the 

bearing than oil and grease is better if 

the shaft is at an angle or arranged 

vertically. 

On the other hand, oil lubrication 

allows higher operating speeds and 

temperatures and can contribute to 

heat removal from the bearing position, 

which is particularly important where 

external heating is involved. Very small 

quantities of lubricant are required to 

lubricate the bearing surfaces. 

Since CARB toroidal roller bearings 

cannot be relubricated via the outer 

ring, lubricant has to be supplied from 

the side of the bearing. This is best 

done via a duct that opens immediately 

adjacent to the side face of the bearing 

outer ring. To force the lubricant to 

pass through the bearing, a drainage 

opening should be provided on the 

opposite side of the bearing (➔ fig 1 ). 

Grease lubrication 

For the lubrication of CARB toroidal 

roller bearings good quality rust 

inhibiting greases that are resistant 

to ageing and have a consistency of 

2 or 3 are suitable. Many factors influence 

the choice of grease. To assist in 

this process, SKF greases that are 

suitable for CARB bearing lubrication 

are listed in table 1 . 

Lubricant supply to the bearing 

Operating conditions 

Fig 

1 

The correct quantity of grease 

For the majority of applications the 

following guidelines apply: 

• Caged CARB toroidal roller bearings 

should be filled with grease to 

approximately 50 %. In bearings 

that are to be greased before 

mounting it is recommended just to 

fill the space between the inner ring 

and the cage (➔ fig 2 ). 

• The free space in the bearing housing 

should be filled with grease to 

between 30 and 50 %. 

• Full complement CARB toroidal 

roller bearings should be completely 

filled with grease. 

For bearing arrangements that turn 

slowly but where good protection 

against corrosion is required, all the 

free space in the housing can be filled 

with grease as there is little risk of the 

operating temperature increasing. 

SKF grease 

Designation Temperature Viscosity at 

range 

40/100 ˚C 

– – ˚C mm 2 /s 

Standard bearing LGMT 2 –30/+120 110/11 

arrangements 

Standard bearing arrange- LGMT 3 –30/+120 125/12 

ments but with relatively 

high ambient temperatures 

Operating temperatures LGHB 2 –20/+150 420/26,5 

always over 100 ˚C 

High operating temperatures, LGHP 2 –40/+150 96/10,5 

smooth operation 

Table 

1 

Shock loads, heavy loads, LGEP 2 –20/+110 200/16 

vibration 

High demands on LGGB 2 –40/+120 110/13 

environmental friendliness 

Recommended SKF greases 

Full details on the mentioned SKF greases as well as the complete range of SKF greases will be found in 

– SKF catalogue MP3000 “SKF Maintenance and Lubrication Products” or online at www.mapro.skf.com 

– “SKF Interactive Engineering Catalogue” on CD-ROM or online at www.skf.com 

22



Table 

2 

Fig 

2 

Bearing design Bearing Maximum n × d m 

factor C/P ≥ 15 C/P ≈ 8 C/P ≈ 4 

CARB bearings with cage 2 350 000 200 000 100 000 

CARB bearings – full complement 1) 4 N.A 3) N.A 3) 20 000 2) 

1) 

The t f value obtained from diagram 1 needs to be divided by a factor 10 

2) 

For higher speeds oil lubrication is recommended 

3) 

For these C/P values a caged bearing is recommended instead 

2 

Bearing factors and recommended maximum speed limits 

Relubrication 

CARB toroidal roller bearings have to 

be relubricated if the service life of the 

grease is shorter than the expected service 

life of the bearing. Relubrication 

should always be undertaken at a time 

when the existing lubricant is still satisfactory. 

The time at which relubrication should 

be undertaken depends on many related 

factors. These include bearing type and 

size, speed, operating temperature, 

grease type, space around the bearing 

and the bearing environment. 

It is only possible to base recommendations 

on statistical rules; the SKF 

relubrication intervals are defined as the 

time period, at the end of which 99 % of 

the bearings are still reliably lubricated. 

This represents L 1 for grease life. 

SKF recommends using experience 

data from running applications and 

tests, together with the estimated relubrication 

intervals provided in the next 

section. 

Relubrication intervals (t f ) 

The relubrication intervals t f for normal 

operating conditions are provided in 

diagram 1 . The diagram is valid for 

bearings on horizontal shafts under 

clean conditions. 

The value on the horizontal axis is 

obtained from “n × d m ” (rotational 

speed × bearing mean diameter) 

(unit: mm/min) multiplied by the relevant 

CARB toroidal roller bearing factor, 

which depends on the applied CARB 

toroidal roller bearing execution and 

loading situation. The bearing factor 

and recommended maximum “n × d m ” 

values for CARB toroidal roller bearings 

are given in table 2 . 

The t f value is then derived considering 

the load magnitude, given by the 

value of C/P. The relubrication interval 

(t f ) is an estimated value, valid for an 

operating temperature of 70 °C, using 

good quality lithium base greases. 

Different conditions are covered in 

detail in “Deviating conditions”. 

If the value of “n × d m ” approaches 

the limit value (> 70 %) or if ambient 

temperatures are high, then the use of 

Relubrication intervals for CARB toroidal roller bearings at 70 °C 

tf, operating hours 

100 000 

50 000 

10 000 

5 000 

1 000 

500 

100 

0 

Bearing grease fill 

Caged CARB toroidal roller bearings should 

not be completely filled with grease; for 

high speed operation fill only the space 

between the inner ring and the cage 

the calculations presented in the SKF 

General Catalogue, section “Speeds 

and vibration”, is recommended to 

check the operating temperature and 

the proper lubrication method. 

Diagram 

100 000 200 000 300 000 400 000 500 000 600 000 700 000 800 000 

Bearing factor n × d m 

C/P ≥ 15 

C/P ≈ 8 

C/P ≈ 4 

Example: CARB toroidal roller bearing C 2220 K 

The bearing has a bore diameter d = 100 mm, an outside diameter D = 180 mm and rotates at a speed 

n = 1 000 r/min. The load ratio C/P is 4 and the operating temperature lies between 60 and 70 °C. What is the 

relubrication interval? 

The bearing factor n × d m is obtained as follows: n × d m = 1 000 × 0,5 (d + D) = 1 000 × 0,5 (100 + 180) = 

140 000. Follow a vertical line from the x-axis from the point n × d m = 140 000 until it intersects the line 

of the load ratio C/P = 4. The relubrication interval can then be read off on the y-axis by drawing a horizontal 

line from the point of intersection with 3 000 operating hours. 

1 

23



Deviating conditions 

Operating temperature 

To account for the accelerated ageing 

of grease in hot running applications, 

SKF recommends halving the intervals 

obtained from the diagram for every 

15 °C increase in bearing temperature 

above 70 °C. 

The relubrication interval t f may be 

extended at temperatures below 70 °C. 

In many cases the interval may also be 

prolonged if the load is low (C/P = 30 to 

50). Extending the relubrication interval 

t f by more than a factor of two is not 

recommended. 

For full complement bearings, t f 

values obtained from the diagram 

should not be prolonged. 

Moreover, it is not advisable to use 

relubrication intervals in excess of 

30 000 hours. 

For many applications, there are 

practical grease lubrication limits, 

when the bearing ring with the highest 

temperature reaches an operating temperature 

of 100 °C. Above this temperature 

special greases should be used. 

In addition,temperature stability of the 

bearing and premature seal failure 

should be taken into consideration. 

For high temperature applications, 

contact the SKF application engineering 

service. 

Vertical shafts 

For bearings on vertical shafts, the 

intervals obtained from the diagram 

should be halved. 

The use of a good seal or retaining 

shield is a prerequisite or grease will 

leak from the bearing arrangement. 

Vibrations 

Mild vibrations will not have a negative 

effect on grease life, but high vibration 

and shock levels, such as those in 

vibrating screen applications, will cause 

the grease to churn. In these cases the 

relubrication interval should be reduced. 

If the grease becomes too soft, a 

grease with a better mechanical stability 

(e.g. LGHB 2) and/or a stiffer grease 

(NLGI 3) should be used. 

Outer ring rotation 

In applications where there is outer ring 

rotation, the value of the bearing factor 

n × d m is calculated by applying the 

value of the bearing outside diameter D 

instead of d m . The use of a good sealing 

mechanism is a prerequisite in order 

to avoid grease loss. 

Under conditions of high outer ring 

speeds (i.e. > 50 % of the speed rating 

in the bearing tables), greases with 

a reduced bleeding tendency should 

be selected (e.g. lithium complex and 

polyurea). 

Contamination 

In case of ingress of contamination, a 

more frequent relubrication interval will 

reduce the negative effects of foreign 

particles on the bleeding characteristics 

of grease while reducing the damaging 

effects caused by overrolling of particles. 

Fluid contaminants (water, process 

fluids) also call for a reduced interval. 

In case of severe contamination, 

continuous relubrication should be 

considered. 

Requisite grease quantities 

for relubrication 

The used grease in a CARB toroidal 

roller bearing should be replaced by 

fresh grease. The quantity of grease 

required for this depends on the bearing 

size; this can be determined using 

G p = 0,005 D B 

where 

G p = grease quantity required for 

periodic lubrication, g 

D = bearing outside diameter, mm 


Grease valve 

Excess grease is caused to enter 

a circular channel in the housing cover 

Supplying grease to a CARB bearing 

When using a hand-operated grease gun, excess pressure should 

be avoided or the seals may be damaged 

Fig 3 

Fig 4 

24


Page ............. 3 Oil lubrication Page ............. 37 

Grease valve 

If CARB toroidal roller bearings are to 

be relubricated frequently, there is a 

risk that too much grease will collect in 

the housing. This risk can be avoided 

by using a grease valve that allows 

excess grease to leave the housing 

(➔ fig 3 ). 

The so-called grease valve consists 

of a washer that rotates with the shaft 

and forms a narrow gap to the housing 

cover. Excess grease is carried by the 

washer into this gap and leaves the 

housing by a grease escape hole in 

the base. 

The grease should always be 

supplied from the side of the bearing 

opposite to the grease valve so that it 

is forced to pass through the bearing. 

When the bearing is mounted on an 

adapter sleeve, the lock nut with locking 

washer acts as a grease valve, 

so that grease should be supplied at 

the side opposite to the lock nut 

(➔ fig 4 ). 

Oil lubrication 

Oil lubrication is recommended or 

must be used if 

• the relubrication intervals for grease 

are too short, 

• speeds and/or operating temperatures 

are too high for grease, 

• heat must be removed from the 

bearing position, or 

• adjacent components are lubricated 

with oil. 


the following methods are normally 

employed: 

• Oil bath lubrication where the oil is 

distributed by rotating machine 

components to the bearing arrangement 

and runs back to the sump. 

• Circulating oil lubrication where the 

circulation is achieved by a pump 

and where the oil is filtered and 

cooled before being returned to 

the sump. The use of this method 

requires efficient sealing to prevent 

oil leakage. 

The oil level should be checked regularly. 

The appropriate level should not 

be higher than the middle of the lowest 

roller when the bearing is stationary. 

The lower limit should be 2 to 3 mm 

above the lowest point of the outer 

ring smallest diameter, D 1 in the product 

tables (➔ fig 5 ). 

The same oils can be used for CARB 

toroidal roller bearings as for spherical 

and cylindrical roller bearings. They 

should 

• have good thermal and chemical 

stability, 

• contain anti-wear additives and 

• provide good protection against 

corrosion. 

Oils of viscosity class 

• ISO VG 150 and ISO VG 220 can be 

used under normal conditions and 

• ISO VG 320 and VG 460 may be 

more appropriate at high temperatures, 

under heavy loads and slow 

speeds. 

2 

Fig 

5 

Oil level in CARB 

toroidal roller 

bearing arrangements 

Max.: middle of the 

lowest roller 

Min.: 2 to 3 mm 

above the lowest 

point of the outer 

ring smallest diameter, 

D 1 in the 

product tables 

25


Page ............. 3 Cylindrical seating Page ............. 37 

Mounting 

A variety of mechanical and hydraulic 

tools and heaters can be used to mount 

a CARB bearing. The procedures you 

choose will depend on the size of the 

bearing and the application. The one 

basic rule in any installation procedure 

is to avoid hitting the bearing rings, 

the rollers or cage. 

Detailed information on mounting 

rolling bearings will be found in the 

publication 4100 “SKF Bearing 

Maintenance Handbook”, as well as 

online at www.skf.com/mount. 

Mounting on cylindrical 

seatings 

With CARB bearings, the ring that is to 

have the tighter fit should be mounted 

first. If the bearing is to be cold mounted 

on the shaft and in the housing at 

the same time a tool of the type shown 

in fig 1 should be used. This tool 

abuts both bearing rings to apply even 

pressure without damaging the rolling 

elements. 

As a rule, larger bearings cannot be 

cold mounted, as the force required to 

press a bearing into position increases 

considerably with size. Therefore it is 

recommended 

• to heat the bearing before it is 

mounted on the shaft, and 

• to heat non-split housings before 

inserting the bearing. 

To mount a bearing on the shaft, 

a temperature differential of 80 °C (between 

ambient temperature and heated 

inner ring) is usually sufficient. For 

housings, the appropriate differential 

depends on the degree of interference 

and the seating diameter. However, 

a moderate increase in temperature will 

usually suffice. An even and risk-free 

heating of CARB bearings can be 

achieved using an induction heater 

(➔ fig 2 ). 

Mounting dolly with abutment faces 

for both bearing rings in the same plane 

A CARB toroidal roller bearing 

on an induction heater 

Fig 1 

Fig 2 

26


Page ............. 3 Tapered seating Page ............. 37 

Mounting on tapered 

seatings 

A CARB toroidal roller bearing with 

a tapered bore is always mounted on 

the shaft with an interference fit. To 

determine the degree of interference 

either the reduction in radial internal 

clearance or the amount by which the 

inner ring is driven up on its seating 

can be used. 

Suitable methods for mounting a 

CARB bearing with a tapered bore are: 

• measuring the clearance reduction, 

• measuring the lock nut tightening 

angle, 

• measuring the axial drive-up and 

• measuring the inner ring expansion. 

For CARB toroidal roller bearings with 

bore diameters greater than or equal 

to 50 mm, SKF recommends the SKF 

Drive-up method. This method is more 

accurate and takes less time than the 

procedure based on clearance reduction. 

Measuring clearance reduction 

Prior to mounting, the internal radial 

clearance must be measured with a 

feeler gauge between the outer ring 

and an unloaded roller. Before measuring, 

the bearing should be rotated a 

few times to make sure that the rollers 

have assumed their correct position. 

For the first measurement a blade 

should be selected that is slightly thinner 

than the minimum value for the 

clearance. During the measurement, 

the blade should be pushed backwards 

and forwards (➔ fig 3 ) until it 

can be inserted to the middle of the 

roller. The procedure should be repeated 

using slightly thicker blades each 

time until a certain resistance is felt. 

During mounting, the reduction in 

clearance should be measured between 

the outer ring raceway and 

the lowest roller (➔ fig 4 ). Again the 

bearing should be rotated a few times 

between each measurement. 

Guideline values for the clearance 

reduction and axial drive-up are given in 

table 2 on page 28. They are valid for 

solid steel shafts and normal operating 

conditions (C/P > 10). Where loads are 

heavy (C/P < 5), speeds high or there is 

a considerable temperature gradient 

across the bearing, greater clearance 

reductions or axial drive-up are required 

and thus bearings with greater initial 

radial internal clearance might be 

needed. 

The minimum values given in table 

2 on page 28 for the clearance reduction 

apply mainly to bearings having 

initial clearances close to the lower 

limits for clearance given in table 2 

on page 39. This will provide that the 

final clearance will not be less than the 

permissible minimum. For bearings with 

C3 or C4 clearance to have a sufficient 

degree of interference on their seating, 

it is recommended that the maximum 

clearance reductions be applied. 

Measuring the lock nut tightening 

angle 

Smaller bearings can easily be mounted 

using the tightening angle α through 

which the nut has to be turned to drive 

up the bearing properly on to its tapered 

seating. Where applicable, the tightening 

angle α is listed in table 1 . Before 

mounting, the thread and side face of 

the nut should be coated with a molybdenum 

disulphide paste or similar 

lubricant and the seating should be 

lightly oiled with thin oil. The bearing is 

then pushed on to the tapered seating 

Angular drive-up for CARB bearings 

180° 

Table 

Bearing Clear- Axial Turning 

desig- ance drive-up angle 

nation reduc- α 

tion 

– mm mm degrees 

C 2205 0,011 0,42 100 

C 2206 0,013 0,45 105 

C 2207 0,016 0,48 115 

C 2208 0,018 0,52 125 

C 2209 0,020 0,54 130 

α 

1 

2 

Move the blade backwards and forwards 

between roller and outer ring 

Fig 

3 

Measuring clearance reduction 

Fig 

4 

C 2210 0,023 0,58 140 

C 2211 0,025 0,60 110 

C 2212 0,027 0,65 115 

C 2213 0,029 0,67 120 

C 2214 0,032 0,69 125 

C 2215 0,034 0,72 130 

C 2216 0,036 0,77 140 

C 2217 0,038 0,80 145 

C 2218 0,041 0,84 150 

C 2219 0,043 0,84 150 

C 2220 0,045 0,87 155 

C 2222 0,050 0,95 170 

C 2314 0,032 0,72 130 

C 2315 0,034 0,75 135 

C 2316 0,036 0,78 140 

C 2317 0,038 0,81 145 

C 2318 0,041 0,86 155 

C 2319 0,043 0,87 155 

C 2320 0,045 0,90 160 

27



and the nut screwed on. By turning the 

nut through the recommended angle α 

the bearing will be pressed up on the 

tapered seating. As the bearing has a 

tendency to skew when being pressed 

into place it is advisable to reposition 

the hook spanner in a slot at 180° to 

that used for tightening and then applying 

a light hammer blow to the hook 

spanner. The bearing will straighten 

up on its seating. Finally the residual 

clearance of the bearing should be 

checked. 

In all cases, before mounting, the 

rust inhibiting oil should be wiped from 

the bore and outside diameter of new 

bearings and sleeves. The shaft seating 

and outside diameter of the sleeve 

should then be lightly oiled with thin oil. 

The SKF Drive-up Method 

The SKF Drive-up Method is based on 

measuring axial displacement of the 

bearing inner ring on its tapered seating 

from a reliably determined starting 

position. 

The SKF Drive-up Method (➔ fig 5 ) 

requires the use of an HMV .. E hydraulic 

nut, that can accommodate a dial gauge. 

A pressure gauge, appropriate to the 

mounting conditions, mounted on a 

suitably sized hand pump, allows 

accurate pressure measurement to 

determine the starting position. The 

tools required are shown in fig 6 . 

Guideline values for 

• the requisite oil pressure and 

• the axial displacement 

for the individual bearings are provided 

in table 3 on page 30. 

Bearing bore Reduction of Axial drive-up s 1) Permissible residual 

diameter radial internal Taper Taper radial clearance 2) 

d clearance 1:12 1:30 after mounting 

bearings with initial 

clearance 

over incl. min max min max min max Normal C3 C4 

mm mm mm mm 

Table 

24 30 0,012 0,018 0,25 0,34 0,64 0,85 0,025 0,033 0,047 

30 40 0,015 0,024 0,30 0,42 0,74 1,06 0,031 0,038 0,056 

40 50 0,020 0,030 0,37 0,51 0,92 1,27 0,033 0,043 0,063 

50 65 0,025 0,039 0,44 0,64 1,09 1,59 0,038 0,049 0,074 

65 80 0,033 0,048 0,54 0,76 1,36 1,91 0,041 0,055 0,088 

80 100 0,040 0,060 0,65 0,93 1,62 2,33 0,056 0,072 0,112 

100 120 0,050 0,072 0,79 1,10 1,98 2,75 0,065 0,083 0,129 

120 140 0,060 0,084 0,93 1,27 2,33 3,18 0,075 0,106 0,147 

140 160 0,070 0,096 1,07 1,44 2,68 3,60 0,085 0,126 0,173 

160 180 0,080 0,108 1,21 1,61 3,04 4,02 0,093 0,140 0,193 

180 200 0,090 0,120 1,36 1,78 3,39 4,45 0,103 0,150 0,209 

200 225 0,100 0,135 1,50 1,99 3,74 4,98 0,113 0,163 0,228 

225 250 0,113 0,150 1,67 2,20 4,18 5,51 0,123 0,175 0,251 

250 280 0,125 0,168 1,85 2,46 4,62 6,14 0,133 0,186 0,276 

280 315 0,140 0,189 2,06 2,75 5,15 6,88 0,143 0,198 0,292 

315 355 0,158 0,213 2,31 3,09 5,77 7,73 0,161 0,226 0,329 

355 400 0,178 0,240 2,59 3,47 6,48 8,68 0,173 0,251 0,358 

400 450 0,200 0,270 2,91 3,90 7,27 9,74 0,183 0,275 0,383 

450 500 0,225 0,300 3,26 4,32 8,15 10,80 0,210 0,295 0,433 

500 560 0,250 0,336 3,61 4,83 9,04 12,07 0,225 0,327 0,467 

560 630 0,280 0,378 4,04 5,42 10,09 13,55 0,250 0,364 0,508 

s 

2 

630 710 0,315 0,426 4,53 6,10 11,33 15,25 0,275 0,386 0,560 

710 800 0,355 0,480 5,10 6,86 12,74 17,15 0,319 0,430 0,620 

800 900 0,400 0,540 5,73 7,71 14,33 19,27 0,335 0,465 0,675 

900 1 000 0,450 0,600 6,44 8,56 16,09 21,39 0,364 0,490 0,740 

1 000 1 120 0,500 0,672 7,14 9,57 17,86 23,93 0,395 0,543 0,823 

1 120 1 250 0,560 0,750 7,99 10,67 19,98 26,68 0,414 0,595 0,885 

Guideline values for clearance reduction 

and axial drive-up 

1) 

Only valid for solid steel shafts 

2) 

The residual clearance must be measured when the initial radial internal clearance (before mounting) lies in the lower 

half of the clearance range and if large temperature differences between inner and outer rings are to be expected in 

operation; the residual clearance should not be less than the minimum values quoted here. When measuring clearance 

care must be taken to see that both bearing rings and the roller complement are centrically arranged with respect to 

each other 

28



Fig 

5 

Zero 

position 

Starting 

position 

Final 

position 

s 

ss 

One sliding interface 

Case 1 

One sliding interface 

Case 2 

2 

Two sliding interfaces 

Case 3 

Two sliding interfaces 

Case 4 

1. Check whether the bearing size and the HMV .. E hydraulic nut coincide. Otherwise 

the values for the pressure given in table 2 must be adjusted (➔ note on page 32). 

2. Check the number of sliding interfaces (➔ above). 

3. Lightly coat the sliding surfaces with a thin oil, e.g. SKF LHMF 300, and place the 

bearing on the tapered journal or sleeve. Screw the hydraulic nut on to the thread of 

the journal or sleeve so that it abuts the bearing and connect the appropriate oil 

pump (➔ fig 6 ). 

4. Bring the bearing to its starting position. Pump oil into the hydraulic nut until the 

pressure quoted in table 3 on page 30 is reached. 

5. Set the dial gauge to “zero” (➔ fig 6 ) and pump more oil into the hydraulic nut until 

the bearing has been driven up the distance prescribed in table 3 on page 30 and is 

in its final position. 

6. After mounting has been completed, release the return valve of the oil pump, 

so that oil under high pressure in the nut can flow back out of the nut. 

7. To completely empty the oil, bring the piston of the hydraulic nut to its original 

position. This is most simply done by screwing the nut further up the threaded 

portion of the journal or sleeve. 

8. Remove the nut from the shaft by unscrewing and replace with a lock nut and 

a locking device. 

The SKF 

Drive-up Method 

Fig 

6 

Dial gauge 

SKF hydraulic 

nut HMV .. E 

Suitable 

tools for the SKF 

Drive-up Method 

SKF pump 729124 SRB (for nuts up to and including HMV 54 E) 

SKF pump TML 50 SRB (for nuts up to and including HMV 170 E) 

29



Table 

3 

Basic bearing Starting position Final position Hydraulic nut 

designation Requisite oil pressure for Axial displacement from Radial clearance Desig- Piston 

one sliding two sliding starting position reduction from nation area 

interface* interfaces* one sliding two sliding zero position 

interface* interfaces 

s s s s ∆ r 

– MPa mm mm – mm 2 

Series C 22 

C 2210 K 0,67 1,15 0,34 0,41 0,023 HMV 10 E 2 900 

C 2211 K 0,57 0,98 0,35 0,42 0,025 HMV 11 E 3 150 

C 2212 K 1,09 1,86 0,39 0,47 0,027 HMV 12 E 3 300 

C 2213 K 0,82 1,40 0,40 0,47 0,029 HMV 13 E 3 600 

C 2214 K 0,76 1,29 0,43 0,50 0,032 HMV 14 E 3 800 

C 2215 K 0,70 1,20 0,45 0,52 0,034 HMV 15 E 4 000 

C 2216 K 1,03 1,76 0,48 0,55 0,036 HMV 16 E 4 200 

C 2217 K 1,12 1,91 0,50 0,57 0,038 HMV 17 E 4 400 

C 2218 K 1,36 2,32 0,55 0,62 0,041 HMV 18 E 4 700 

C 2219 K 1,02 1,74 0,54 0,62 0,043 HMV 19 E 4 900 

C 2220 K 1,12 1,90 0,57 0,64 0,045 HMV 20 E 5 100 

C 2222 K 1,49 2,54 0,63 0,71 0,050 HMV 22 E 5 600 

C 2224 K 1,58 2,69 0,67 0,74 0,054 HMV 24 E 6 000 

C 2226 K 1,44 2,46 0,71 0,79 0,059 HMV 26 E 6 400 

C 2228 K 2,36 4,03 0,79 0,86 0,063 HMV 28 E 6 800 

C 2230 K 1,79 3,05 0,82 0,89 0,068 HMV 30 E 7 500 

C 2234 K 2,58 4,40 0,94 1,01 0,076 HMV 34 E 9 400 

C 2238 K 1,77 3,01 1,01 1,08 0,086 HMV 38 E 11 500 

C 2244 K 1,95 3,34 1,15 1,22 0,100 HMV 44 E 14 400 

Series C 23 

C 2314 K 2,01 3,43 0,46 0,53 0,032 HMV 14 E 3 800 

C 2315 K 2,25 3,84 0,48 0,55 0,034 HMV 15 E 4 000 

C 2316 K 2,11 3,61 0,49 0,56 0,036 HMV 16 E 4 200 

C 2317 K 2,40 4,10 0,52 0,59 0,038 HMV 17 E 4 400 

C 2318 K 2,88 4,91 0,57 0,64 0,041 HMV 18 E 4 700 

C 2319 K 2,22 3,79 0,57 0,64 0,043 HMV 19 E 4 900 

C 2320 K 2,56 4,36 0,59 0,66 0,045 HMV 20 E 5 100 

C 2326 K 2,71 4,62 0,73 0,81 0,059 HMV 26 E 6 400 

Series C 30 

C 3022 K 0,97 1,66 0,62 0,69 0,050 HMV 22 E 5 600 

C 3024 K 0,92 1,58 0,65 0,72 0,054 HMV 24 E 6 000 

C 3026 K 1,23 2,10 0,72 0,79 0,056 HMV 26 E 6 400 

C 3028 K 1,25 2,13 0,76 0,83 0,063 HMV 28 E 6 800 

C 3030 K 1,02 1,73 0,80 0,87 0,068 HMV 30 E 7 500 

C 3032 K 1,33 2,26 0,86 0,93 0,072 HMV 32 E 8 600 

C 3034 K 1,52 2,60 0,90 0,98 0,076 HMV 34 E 9 400 

C 3036 K 1,43 2,44 0,95 1,02 0,081 HMV 36 E 10 300 

C 3038 K 1,60 2,73 1,02 1,09 0,086 HMV 38 E 11 500 

C 3040 K 1,62 2,76 1,06 1,13 0,090 HMV 40 E 12 500 

C 3044 K 1,58 2,69 1,15 1,22 0,099 HMV 44 E 14 400 

C 3048 K 1,34 2,29 1,23 1,30 0,108 HMV 48 E 16 500 

C 3052 K 1,77 3,02 1,35 1,43 0,117 HMV 52 E 18 800 

C 3056 K 1,69 2,89 1,52 1,45 0,126 HMV 56 E 21 100 

C 3060 K 1,85 3,16 1,55 1,62 0,135 HMV 60 E 23 600 

C 3064 K 1,80 3,08 1,65 1,72 0,144 HMV 64 E 26 300 

C 3068 K 2,04 3,48 1,76 1,83 0,153 HMV 68 E 28 400 

C 3072 K 1,65 2,82 1,82 1,89 0,162 HMV 72 E 31 300 

* The quoted values are for hydraulic nuts, the thread diameter of which corresponds to the bore diameter of the bearing to be mounted and for applications with lightly oiled sliding 

surfaces 

30



Continuation table 

3 






s s s s ∆ r 


2 

Series C 30 

C 3076 K 1,36 2,32 1,88 1,95 0,171 HMV 76 E 33 500 

C 3080 K 1,54 2,63 1,99 2,06 0,180 HMV 80 E 36 700 

C 3084 K 1,34 2,29 2,07 2,14 0,189 HMV 84 E 40 000 

C 3088 K 1,22 2,08 2,14 2,21 0,198 HMV 88 E 42 500 

C 3092 K 2,00 3,42 2,33 2,41 0,207 HMV 92 E 45 100 

C 3096 K 1,75 2,99 2,40 2,47 0,216 HMV 96 E 48 600 

C 30/500 K 1,56 2,66 2,47 2,54 0,225 HMV 100 E 51 500 

C 30/530 K 1,54 2,63 2,60 2,68 0,239 HMV 106 E 56 200 

C 30/560 K 2,26 3,85 2,84 2,91 0,252 HMV 112 E 61 200 

C 30/600 K 1,92 3,28 2,98 3,06 0,270 HMV 120 E 67 300 

C 30/630 K 1,68 2,87 3,09 3,16 0,284 HMV 126 E 72 900 

C 30/670 K 2,12 3,61 3,34 3,41 0,302 HMV 134 E 79 500 

C 30/710 K 1,73 2,96 3,47 3,54 0,320 HMV 142 E 87 700 

C 30/750 K 1,89 3,22 3,68 3,75 0,338 HMV 150 E 95 200 

C 30/800 K 1,88 3,22 3,91 3,98 0,360 HMV 160 E 103 900 

C 30/850 K 1,90 3,24 4,15 4,22 0,383 HMV 170 E 114 600 

C 30/900 K 1,60 2,73 4,32 4,39 0,405 HMV 180 E 124 100 

C 30/950 K 1,94 3,30 4,62 4,69 0,428 HMV 190 E 135 700 

C 30/1000 K 1,93 3,30 4,85 4,92 0,450 HMV 200 E 145 800 

Series C 31 

C 3120 K 1,27 2,16 0,57 0,64 0,045 HMV 20 E 5 100 

C 3130 K 2,41 4,12 0,84 0,91 0,068 HMV 30 E 7 500 

C 3132 K 2,07 3,54 0,87 0,94 0,072 HMV 32 E 8 600 

C 3134 K 1,84 3,13 0,90 0,97 0,076 HMV 34 E 9 400 

C 3136 K 1,71 2,92 0,94 1,01 0,081 HMV 36 E 10 300 

C 3138 K 2,27 3,87 1,02 1,10 0,086 HMV 38 E 11 500 

C 3140 K 2,71 4,63 1,08 1,16 0,090 HMV 40 E 12 500 

C 3144 K 2,76 4,71 1,18 1,26 0,099 HMV 44 E 14 400 

C 3148 K 2,01 3,44 1,24 1,31 0,108 HMV 48 E 16 500 

C 3152 K 2,76 4,70 1,37 1,44 0,117 HMV 52 E 18 800 

C 3156 K 2,63 4,49 1,47 1,54 0,126 HMV 56 E 21 100 

C 3160 K 2,81 4,79 1,57 1,64 0,135 HMV 60 E 23 600 

C 3164 K 2,09 3,56 1,61 1,68 0,144 HMV 64 E 26 300 

C 3168 K 2,84 4,85 1,75 1,82 0,153 HMV 68 E 28 400 

C 3172 K 2,46 4,20 1,83 1,90 0,162 HMV 72 E 31 300 

C 3176 K 2,57 4,39 1,93 2,01 0,171 HMV 76 E 33 500 

C 3180 K 3,32 5,66 2,10 2,17 0,180 HMV 80 E 36 700 

C 3188 K 2,38 4,06 2,20 2,27 0,198 HMV 88 E 42 500 

C 3184 K 3,29 5,62 2,17 2,25 0,189 HMV 84 E 40 000 

C 3192 K 3,57 6,09 2,39 2,46 0,207 HMV 92 E 45 100 

C 3196 K 3,51 6,00 2,48 2,56 0,216 HMV 96 E 48 600 

Series C 31 

C 31/500 K 3,54 6,04 2,57 2,64 0,225 HMV 100 E 51 500 

C 31/530 K 3,40 5,81 2,71 2,79 0,239 HMV 106 E 56 200 

C 31/560 K 3,11 5,30 2,83 2,90 0,252 HMV 112 E 61 200 

C 31/600 K 3,15 5,38 3,01 3,09 0,270 HMV 120 E 67 300 

C 31/630 K 3,36 5,74 3,18 3,26 0,284 HMV 126 E 72 900 

C 31/670 K 3,48 5,95 3,38 3,45 0,302 HMV 134 E 79 500 


surfaces 

31



Continuation table 

3 






s s s s ∆ r 


Series C 31 

C 31/710 K 3,58 6,10 3,59 3,67 0,320 HMV 142 E 87 700 

C 31/750 K 3,52 6,00 3,77 3,84 0,338 HMV 150 E 95 200 

C 31/800 K 3,55 6,06 4,01 4,09 0,360 HMV 160 E 103 900 

C 31/850 K 4,02 6,86 4,32 4,39 0,383 HMV 170 E 114 600 

C 31/1000 K 3,69 6,30 4,97 5,04 0,450 HMV 200 E 145 800 

Series C 32 

C 3224 K 2,46 4,20 0,69 0,76 0,054 HMV 24 E 6 000 

C 3232 K 2,68 4,58 0,87 0,94 0,072 HMV 32 E 8 600 

C 3234 K 3,87 6,60 0,96 1,03 0,076 HMV 34 E 9 400 

C 3236 K 3,69 6,30 1,01 1,09 0,081 HMV 36 E 10 300 

Series C 39 

C 3972 K 0,63 1,08 1,74 1,81 0,162 HMV 72 E 31 300 

C 3976 K 1,06 1,81 1,88 1,95 0,171 HMV 76 E 33 500 

C 3980K 0,74 1,27 1,93 2,00 0,180 HMV 80 E 36 700 

C 3984 K 0,73 1,25 2,03 2,10 0,189 HMV 84 E 40 000 

C 3988 K 1,05 1,79 2,16 2,23 0,198 HMV 88 E 42 500 

C 3992 K 0,82 1,41 2,22 2,29 0,207 HMV 92 E 45 100 

C 3996 K 1,18 2,01 2,37 2,44 0,216 HMV 96 E 48 600 

C 39/500 K 0,95 1,63 2,43 2,50 0,225 HMV 100 E 51 500 

C 39/530 K 0,73 1,25 2,52 2,59 0,239 HMV 106 E 56 200 

C 39/560 K 0,96 1,64 2,70 2,78 0,252 HMV 112 E 61 200 

C 39/600 K 1,00 1,71 2,89 2,96 0,270 HMV 120 E 67 300 

C 39/630 K 1,05 1,80 3,03 3,11 0,284 HMV 126 E 72 900 

C 39/670 K 1,44 2,46 3,31 3,38 0,302 HMV 134 E 79 500 

C 39/710 K 0,81 1,39 3,35 3,42 0,320 HMV 142 E 87 700 

C 39/750 K 1,06 1,80 3,59 3,66 0,338 HMV 150 E 95 200 

C 39/800 K 1,13 1,93 3,83 3,90 0,360 HMV 160 E 103 900 

C 39/850 K 1,09 1,85 4,06 4,14 0,383 HMV 170 E 114 600 

C 39/900 K 1,00 1,70 4,26 4,34 0,405 HMV 180 E 124 100 

C 39/950 K 1,04 1,77 4,50 4,57 0,428 HMV 190 E 135 700 


surfaces 

Note 

The values given in table 3 for the bearing in table 3 . The requisite oil P ref = oil pressure specified for the 

requisite oil pressure and the axial pressure can be calculated from 

standard hydraulic nut 

displacement s s apply to bearings 

(➔ table 3 ), MPa 

mounted on solid steel shafts for the 

A 

A req = piston area of hydraulic nut 

first time. For the case 4 shown in 

req 

P req = · P ref 

used (➔ table 3 ), mm 2 

fig 5 on page 29, “Two sliding 

A ref 

A ref = piston area of the specified 

interfaces” (bearing on a withdrawal 

standard hydraulic nut 

sleeve), the guideline values given in where 

(➔ table 3 ), mm 2 

table 3 do not apply as a smaller P req = requisite oil pressure for 

nut is used than that shown for the 

hydraulic nut used, MPa 

32


Page ............. 3 SKF Drive-up Method Page ............. 37 

Measuring inner ring expansion 

Measuring inner ring expansion allows 

large size CARB bearings with a 

tapered bore to be mounted simply, 

quickly and accurately without measuring 

the radial internal clearance 

before and after mounting. The SKF 

SensorMount ® Method uses a sensor, 

integrated into the CARB toroidal roller 

bearing inner ring, and a dedicated 

hand-held indicator (➔ fig 7 ). 

The bearing is driven up the tapered 

seating using common SKF mounting 

tools. Information from the sensor is 

processed by the indicator. Inner ring 

expansion is displayed as the relationship 

between the clearance reduction 

(mm) and the bearing bore diameter (m). 

Aspects like bearing size, smoothness, 

shaft material or design – solid or 

hollow do not need to be considered. 

For detailed information about SKF 

SensorMount please contact SKF. 

Additional mounting information 

Additional information on mounting 

CARB toroidal roller bearings can be 

found 

• in the handbook “SKF Drive-up 

Method” on CD-ROM, 

• in the “SKF Interactive Engineering 

Catalogue” on CD-ROM or online at 

www.skf.com, or 

• online at www.skf.com/mount. 

2 

Fig 

7 

0,450 

ON 

0FF 

CLR 

MAX 

TMEM 1500 

SensoMount Indicator 

33


Page ............. 3 Cylindrical seating Page ............. 37 

Dismounting 

If CARB toroidal roller bearings are to 

be re-used after dismounting, the 

force used for dismounting should 

never pass through the rollers. The 

ring with the looser fit should be withdrawn 

from its seating first. There are 

three methods available to dismount 

the bearing ring that has been mounted 

with an interference fit: mechanical, 

hydraulic or the oil injection method. 

Detailed information on the dismounting 

of bearings is contained in 

publication 4100 “SKF Bearing Maintenance 

Handbook”. 

The puller is 

applied to the side 

face of the inner 

ring 

Fig 

1 

Dismounting from 

a cylindrical seating 

SKF puller 

with hydraulic 

assistance 

Fig 

2 

CARB toroidal roller bearings having 

a bore diameter up to approximately 

120 mm that have been mounted with 

an interference fit on the shaft can be 

removed using a conventional puller. 

The puller should be applied to the 

face of the ring to be dismounted (➔ 

fig 1 ). By turning the puller spindle 

the bearing is easily removed from the 

cylindrical seating. 

For larger bearings, the withdrawal 

forces are considerable. In these cases, 

the use of pullers with hydraulic assistance 

(➔ fig 2 ) or the SKF oil injection 

method should be used. 

CARB toroidal roller bearings that 

have an interference fit for both rings 

should be pressed out of the housing 

together with the shaft. On the other 

hand it is also possible to withdraw the 

bearing with the housing from the shaft, 

particularly if the oil injection method is 

applied (➔ fig 3 ). 

Small CARB toroidal roller bearings 

mounted with an interference fit in a 

housing bore without shoulders can 

be removed using a dolly applied to 

the outer ring. Larger bearings require 

more force to remove them and a 

press is required. 


roller bearing on a 

cylindrical seating 

being removed 

using the oil 

injection method 

Fig 

3 

34



Various larger CARB toroidal roller 

bearings that have a loose or a transition 

fit in the housing can be removed 

using a tool with hooks that pass 

between the rollers and grip the outer 

ring from behind (➔ fig 4 ), so that the 

withdrawal forces are applied directly 

to the outer ring and the rollers do not 

become jammed between the rings. 

Fig 

4 

2 

Dismounting from 

a tapered seating 

As bearings with a tapered bore come 

free from their seating very suddenly it 

is necessary to provide a stop of some 

sort to limit their axial movement. An 

end plate screwed to a shaft end or a 

lock nut (➔ fig 5 ) serve this purpose. 

The lock nut should be unscrewed a 

few turns. 

Small CARB toroidal roller bearings 

can be removed with the aid of a dolly 

or a drift of special design (➔ fig 6 ). 

A few blows directed at the dolly are 

sufficient to drive the inner ring from 

its tapered seating. 

Medium-sized CARB toroidal roller 

bearings can be withdrawn using a 

mechanical puller or a puller with a 

hydraulic assistance. To avoid damaging 

the bearing, the puller should be 

applied centrically. 

The removal of large bearings is 

greatly facilitated if the oil injection 

method is employed. 

. 

Schematic sketch of tool for removal of CARB bearings 

from a non-split housing 

The lock nut is left on the shaft thread to provide a stop 

Fig 

5 

Fig 

6 

Removal of a small CARB toroidal roller bearing using a drift 

of special design 

35


Page ............. 3 Integrated maintenance Page ............. 37 

SKF concept for cost saving 

A daily occurrence 

Whatever the branch of industry – unplanned 

stoppages are still not a thing 

of the past. They are not only annoying, 

but costly too. And with the heightened 

demands for prompt and just-in-time 

deliveries they may be even more 

expensive. 

The SKF answer 

The bearings in a machine can be 

likened to the heart of a living being. 

When the bearing comes to a standstill, 

the machine does too. 

And just as a doctor will listen to the 

heart of a patient, so it is possible to 

listen to the bearings in order to judge 

the condition of the machine. It is possible 

to determine whether the bearing 

is in danger of failing prematurely 

because of faulty mounting, poor 

lubrication or other causes. 

If the importance of the bearings is 

neglected this will inevitably lead to 

high costs, unnecessary stoppages 

and, in the worst case, damage to 

other components of the machine. 

Instead, SKF recommends to make 

use of one of its services: an IMS 

(Integrated Maintenance Solutions) 

contract, which consists of linking 

customers with SKF resources. 

This involves a multi-stage programme 

that includes the following 

points: 

• common problem definition and 

target setting, 

• optimization of spares stocked, 

• reduction of purchasing costs, 

• choosing the right bearings, 

• caring for the bearings, 

• monitoring the machine condition, 

• having the correct tools and 

lubricants on hand, 

• customer-specific training, and 

• a repair service. 

Obviously it is possible to accept the 

whole programme or to select only 

parts of it. Whatever the choice, it will 

be a win-win situation. More information 

can be obtained from the nearest 

SKF office or authorised distributor. 

Monitoring temperature 

Monitoring noise 

SKF experts bring their experience 

to lubricant analysis 

36


Page ............. 3 Page ............. 12 Bearing data 

Bearing data – general 

Designs 


available 

• with a caged roller assembly 

(➔ fig 1 ) and 

• in a full complement version 

(➔ fig 2 ). 

They are both produced with a cylindrical 

bore, but the caged bearings are 

also produced with a tapered bore. 

Depending on the bearing series, the 

taper is either 1:12 or 1:30. 

Fig 

Fig 

Fig 

1 

2 

3 

Caged CARB 


bearing 

Full complement 



Sealed CARB 


bearing 

Sealed bearings 

Today, the range of sealed bearings 

(➔ fig 3 ) consists of small and medium 

size full complement bearings for low 

speeds. These bearings with seals on 

both sides are filled with a high temperature 

long life grease and are maintenance-free. 

The double lip seal suitable for high 

temperature operations is sheet steel 

reinforced and made of hydrogenated 

acrylonitrile butadiene rubber (HNBR). 

It seals against the inner ring raceway. 

The outside diameter of the seal is 

retained in an outer ring recess and 

provides proper sealing also in applications 

with outer ring rotation. The seals 

can withstand operating temperatures 

in the range of –40 and +150 °C. 

The sealed bearings are filled with 

a premium quality, synthetic ester oil 

based grease using polyurea as a 

thickener. This grease has good corrosion 

inhibiting properties and can be 

used at temperatures between –25 

and +180 °C. The base oil viscosity is 

440 mm 2 /s at 40 °C and 38 mm 2 /s at 

100 °C. The grease fill is 70 to 100 % 

of the free space in the bearing. 

Sealed bearings with other lubricating 

greases or degrees of greasefill 

can be supplied on request. 

Dimensions 

The boundary dimensions of CARB 

toroidal roller bearings are in accordance 

with ISO 15:1998. The dimensions 

of the adapter and withdrawal 

sleeves correspond to ISO 2982-1:1995. 

Tolerances 

SKF CARB bearings are manufactured 

as standard to Normal tolerances. 

Bearings up to and including 300 mm 

bore diameter are produced to higher 

precision than the ISO Normal tolerances. 

For example 

• the width tolerance is considerably 

tighter than the ISO Normal tolerance, 

• the running accuracy is to tolerance 

class P5 as standard. 

For larger bearing arrangements 

where running accuracy is a key operational 

parameter, SKF CARB bearings 

with P5 running accuracy are also available. 

These bearings are identified by 

the suffix C08. Their availability should 

be checked. 

The values of the tolerances are in 

accordance with ISO 492:2002. 

Internal clearance 


produced as standard with Normal 

radial internal clearance. Many of the 

bearings are also available with C3 

clearance and some with the smaller 

C2 or the much larger C4 clearance. 

The radial internal clearance limits 

for 

• bearings with cylindrical bore are 

given in table 1 on page 38 and for 

• bearings with tapered bore in 

table 2 on page 39. 

They are valid for bearings before 

mounting and under zero measuring 

load. 

Axial displacement of one ring in 

relation to the other will gradually 

reduce the radial internal clearance in 

a CARB toroidal roller bearing. However, 

for the amount of axial displacement 

found in standard applications, 

this is not an issue. 


often used together with spherical 

roller bearings. In these cases the 

operational internal clearance of both 

the bearings should be the same. 

3 

37



Bore 

Radial internal clearance 

diameter C2 Normal C3 C4 C5 

d 

over incl. min max min max min max min max min max 

mm µm 

Table 

1 

Radial internal 

clearance of 


roller bearings 

with cylindrical 

bore 

18 24 15 27 27 39 39 51 51 65 65 81 

24 30 18 32 32 46 46 60 60 76 76 94 

30 40 21 39 39 55 55 73 73 93 93 117 

40 50 25 45 45 65 65 85 85 109 109 137 

50 65 33 54 54 79 79 104 104 139 139 174 

65 80 40 66 66 96 96 124 124 164 164 208 

80 100 52 82 82 120 120 158 158 206 206 258 

100 120 64 100 100 144 144 186 186 244 244 306 

120 140 76 119 119 166 166 215 215 280 280 349 

140 160 87 138 138 195 195 252 252 321 321 398 

160 180 97 152 152 217 217 280 280 361 361 448 

180 200 108 171 171 238 238 307 307 394 394 495 

200 225 118 187 187 262 262 337 337 434 434 545 

225 250 128 202 202 282 282 368 368 478 478 602 

250 280 137 221 221 307 307 407 407 519 519 655 

280 315 152 236 236 330 330 434 434 570 570 714 

315 355 164 259 259 360 360 483 483 620 620 789 

355 400 175 280 280 395 395 528 528 675 675 850 

400 450 191 307 307 435 435 577 577 745 745 929 

450 500 205 335 335 475 475 633 633 811 811 1 015 

500 560 220 360 360 518 518 688 688 890 890 1 110 

560 630 245 395 395 567 567 751 751 975 975 1 215 

630 710 267 435 435 617 617 831 831 1 075 1 075 1 335 

710 800 300 494 494 680 680 920 920 1 200 1 200 1 480 

800 900 329 535 535 755 755 1 015 1 015 1 325 1 325 1 655 

900 1 000 370 594 594 830 830 1 120 1 120 1 460 1 460 1 830 

1 000 1 120 410 660 660 930 930 1 260 1 260 1 640 1 640 2 040 

1 120 1 250 450 720 720 1 020 1 020 1 380 1 380 1 800 1 800 2 240 

To obtain equal values for both bearings, 

the reduction of radial internal 

clearance in the CARB bearing, 

caused by axial displacement, must 

be taken into account. Therefore, the 

initial clearance of a CARB bearing will 

be greater than for a comparably sized 

spherical roller bearing in the same 

clearance class. The difference amounts 

to approximately half the value of the 

clearance zone of the spherical roller 

bearing. Axial displacement of the 

CARB inner ring relative to the outer 

ring by 6 to 8 % of the bearing width 

will reduce the operational clearance 

by approximately the same value. 

38 

Misalignment 

An angular misalignment of 0,5° between 

the inner and outer rings can 

be accommodated by CARB toroidal 

roller bearings without any negative 

consequences for the bearing. This 

guideline value presupposes that 

• the positions of the shaft and housing 

axes remain constant and 

• the actual permissible axial displacement 

of the bearing rings is 

not exceeded. 

Greater misalignments cause additional 

sliding movements to take place 

between the rollers and raceways. 

This will increase friction and shorten 

bearing service life. Therefore, the 

angular misalignment should preferably 

not exceed 1°. Also, the ability to 

compensate for misalignment when 

the bearing is stationary is limited and 

misalignment when the bearing is 

stationary under load should therefore 

be avoided. 

Both misalignment and axial displacement 

cause the rollers to move 

towards the side faces of the bearing 

rings. Rollers should not protrude; 

hence there is a limit to the axial displacement. 

The influence of misalignment 

on permissible axial displacement 

can be determined (➔ “Axial displacement” 

on page 40). Misalignment 

in bearings with MB type cage should 

never exceed 0,5°.



Radial internal 

clearance of 



with tapered bore 

Bore 

Radial internal clearance 

diameter C2 Normal C3 C4 C5 

d 

over incl. min max min max min max min max min max 

mm µm 

Table 

2 

18 24 19 31 31 43 43 55 55 69 69 85 

24 30 23 37 37 51 51 65 65 81 81 99 

30 40 28 46 46 62 62 80 80 100 100 124 

40 50 33 53 53 73 73 93 93 117 117 145 

50 65 42 63 63 88 88 113 113 148 148 183 

65 80 52 78 78 108 108 136 136 176 176 220 

3 

80 100 64 96 96 132 132 172 172 218 218 272 

100 120 75 115 115 155 155 201 201 255 255 321 

120 140 90 135 135 180 180 231 231 294 294 365 

140 160 104 155 155 212 212 269 269 338 338 415 

160 180 118 173 173 238 238 301 301 382 382 469 

180 200 130 193 193 260 260 329 329 416 416 517 

200 225 144 213 213 288 288 363 363 460 460 571 

225 250 161 235 235 315 315 401 401 511 511 635 

250 280 174 258 258 344 344 444 444 556 556 692 

280 315 199 283 283 377 377 481 481 617 617 761 

315 355 223 318 318 419 419 542 542 679 679 848 

355 400 251 350 350 471 471 598 598 751 751 920 

400 450 281 383 383 525 525 653 653 835 835 1 005 

450 500 305 435 435 575 575 733 733 911 911 1 115 

500 560 335 475 475 633 633 803 803 1 005 1 005 1 225 

560 630 380 530 530 702 702 886 886 1 110 1 110 1 350 

630 710 422 590 590 772 772 986 986 1 230 1 230 1 490 

710 800 480 674 674 860 860 1 100 1 100 1 380 1 380 1 660 

800 900 529 735 735 955 955 1 215 1 215 1 525 1 525 1 855 

900 1 000 580 814 814 1 040 1 040 1 340 1 340 1 670 1 670 2 050 

1 000 1 120 645 895 895 1 165 1 165 1 495 1 495 1 875 1 875 2 275 

1 120 1 250 705 975 975 1 275 1 275 1 635 1 635 2 055 2 055 2 495 

39




CARB toroidal roller bearings can 

accomodate changes in shaft length 

within certain limits. The guideline values 

for axial displacement given in the 

product tables are valid provided there is 

• a sufficiently large operational radial 

clearance in the bearing, and that 

• the rings are not misaligned. 

This means that the rollers (➔ fig 4 ) 

will not protrude from the bearing rings 

(a) or interfere with the retaining ring 

(b) or with the seal, if any. 

If the axial movement exceeds 50 % 

of the permissible axial displacement 

capability s 1 , it should be checked, 

whether the residual radial internal 

clearance is sufficiently large. The reduction 

of radial clearance C red as a 

result of an axial displacement can be 

calculated using the equation shown in 

the section “Influence of radial operating 

clearance on the axial displacement 

capability”. 

If the axial movement exceeds 50 % 

of the axial displacement capability s 1 

or s 2 , and the misalignment attains 

approximately 0,5°, the actual axial 

displacement of the rollers should be 

checked additionally. The axial displacement 

of the rollers s mis caused 

by misalignment of the bearing rings 

can be calculated using the equation 


limits s 1 and s 2 

a 

b 

s 1 

s 2 

Fig 

4 

shown in the following section “Influence 

of roller displacement on the 

axial displacement capability”. For 

additional information please contact 

the SKF application engineering service. 

The maximum permissible axial displacement 

is obtained from the smaller 

of the minimum values of the 

• permissible axial displacement s lim 

depending on roller complement displacement, 

and the 

• permissible axial displacement s cle 

depending on the clearance reduction, 

calculated as explained in the following 

part. 

Influence of roller displacement 

on axial displacement capability 

The axial displacement, as well as the 

misalignment of one ring with respect 

to the other, changes the position of 

the roller complement in CARB bearing. 

The reduction in the permissible 

axial displacement caused by the misalignment 

can be estimated using 

s mis = k 1 B α 

where 

s mis = reduction in permissible axial 

displacement caused by 

misalignment, mm 

k 1 = misalignment factor 




α = misalignment, degrees 

Assuming a sufficiently large operational 

clearance, the maximum permissible 

axial displacement is 

obtained from 

s lim = s 1 – s mis 

or 

s lim = s 2 – s mis 

where 

s lim = permissible axial displacement 

with respect to the roller complement 

caused by misalignment, 

mm 

s 1 

s 2 

= guideline value for the axial displacement 

capability in bearings 

with cage, sealed bearings 

or full complement bearings 

when displacing away from the 

snap ring, mm (➔ product 

tables) 

= guideline value for the axial 

displacement capability in full 

complement bearings when 

displacing towards the snap 

ring, mm (➔ product tables) 

s mis = reduction in permissible axial 

displacement caused by misalignment, 

mm 

Influence of radial operating clearance 

on axial displacement capability 

Axial displacement from a centred 

position of one bearing ring in relation 

to the other reduces the radial clearance. 

The radial clearance reduction 

corresponding to a certain axial displacement 

from a centred position can 

be calculated using 

2 

k 2 s cle 

C red = 

B 

The clearance reduction cannot be 

larger than the bearing operating radial 

clearance. 

If instead a certain permissible radial 

clearance reduction is known, the corresponding 

permissible axial displacement 

from a centred position can be calculated 

using 

B C red 

s cle = 

k2 

where 

s cle = axial displacement from a centred 

position giving a certain 

radial clearance reduction C red , 

mm 

C red = reduction of radial clearance as 

a result of an axial displacement 

from a centred position, mm 

k 2 = operating clearance factor 



The axial displacement capability can 

also be obtained using diagram 1 , 

40



which is valid for all CARB bearings. 

The axial displacement and operational 

clearance are shown as functions 

of the bearing width. 

From diagram 1 it can be seen 

(dotted line) that for a bearing C 3052 

K/HA3C4, with an operational clearance 

of 0,15 mm which corresponds to approximately 

0,15 % of the bearing width, 

an axial displacement of approximately 

12,5 % of the bearing width is possible. 

Thus, when an axial displacement of 

approximately 0,125 × 104 = 13 mm 

has taken place, the operational clearance 

will be zero. 

It should be remembered that the 

distance between the dotted line and 

the curve represents the residual radial 

operating clearance in the bearing 

arrangement. 

Diagram 1 also illustrates how it is 

possible, simply by axially displacing 

the bearing rings relative to each other, 

to achieve a given radial internal clearance 

in a CARB bearing. 

Radial clearance, % of bearing width 

0,5 

0,4 

0,3 

0,2 

0,1 

0 

–0,1 

–20 –10 0 10 20 

Axial displacement, % of the bearing width 

I Range of operation with operational clearance 

II Possible range of operation where the bearing will have preload and the friction 

can increase by up to 50 % but where the L 10 bearing life will still be achieved 

Diagram 

Axial displacement in % of the bearing width as a function of radial operational 

clearance 

1 

3 

Calculation example 1 

For bearing C 3052 with a width 

B = 104 mm, a misalignment 

factor k 1 = 0,122 and a guideline 

value for the axial displacement 

capability s 1 = 19,3 mm for an 

angular misalignment α = 0,3°, 

the permis-sible axial displacement 

with respect to the roller 

complement movement caused 

by misalignment s lim can be 

obtained from 

s lim =s 1 – k 1 B α 

s lim = 19,3 – 0,122 × 104 × 0,3 

= 19,3 – 3,8 

s lim = 15,5 mm 


Bearing C 3052/HA3C4 has a 

width B = 104 mm, an operating 

clearance factor k 2 = 0,096 and an 

operational clearance of 0,15 mm. 

The possible axial displacement 

from the central position of one 

ring to the other until the operational 

clearance becomes zero is 

BC red 

s cle = 

k2 

s cle = 

104 × 0,15 

0,096 

= 12,7 mm 

The axial displacement of 12,7 mm 

lies within the guideline value of 

s 1 = 19,3 mm (from the product 

tables) and is still permissible even 

if the rings should be misaligned 

at 0,3° to each other 

(➔ Calculation example 1). 


For bearing C 3052 that has a 

width of B = 104 mm and an operating 

clearance factor k 2 = 0,096 

the reduction in operational clearance 

C red caused by an axial 

displacement s cle = 6,5 mm from 

the central position is calculated 

using 

2 

k 2 s cle 

C red = 

B 

C red = 

0,096 × 6,5 2 

104 

C red = 0,039 mm 

41



Cages 

Depending on their size, CARB toroidal 

bearings are fitted with one of the 

following as standard (➔ fig 5 ): 

• injection moulded cage of glass 

fibre reinforced polyamide 4,6, 

roller centred, designation suffix 

TN9 (a), 

• window-type steel cage, roller 

centred, no designation suffix (b), 

• window-type brass cage, roller 

centred, designation suffix M (c), or 

• machined brass cage, inner ring 

centred, designation suffix MB (d). 

CARB bearings with polyamide 

4,6 cages can be operated at temperatures 

up to +120 °C. With the exception 

of a few synthetic oils and greases 

with a synthetic oil base, and lubricants 

containing a high proportion of EP 

additives when used at high temperatures, 

the lubricants generally used 

for rolling bearings do not have a 

detrimental effect on cage properties. 

For bearing arrangements that are 

to be operated at continuously high temperatures 

or under arduous conditions, 

SKF recommends using steel or brass 

cages. 

Influence of operating temperature 

on bearing material 

All CARB bearing rings undergo a special 

heat treatment so that they can operate 

at higher temperatures for extended 

periods without causing detrimental 

dimensional changes. Of course, the 

maximum temperature is dependant on 

the cage, lubricant and seals, However, 

the rings are heat treated to withstand 

200 °C for 2 500 h, or for short periods, 

even higher temperatures. 

Minimum load 

In order to provide satisfactory operation, 

CARB toroidal roller bearings, 

like all ball and roller bearings, must 

always be subjected to a given minimum 

load, particularly if they are to 

operate at high speeds or are subjected 

to high accelerations or rapid 

changes in the direction of load. Under 

such conditions the inertia forces of 

rollers and cage, and the friction in the 

lubricant, can have a detrimental 

effect on the rolling conditions in the 

bearing arrangement and may cause 

damaging sliding movements to occur 

between the rollers and the raceways. 

The requisite minimum load to be 

applied to a CARB toroidal roller bearing 

with cage can be estimated using 

P 0m = 0,007 C 0 

and for a full complement bearing 

using 

P 0m = 0,01 C 0 

where 

P 0m = minimum equivalent static load, 

kN 

C 0 = basic static load rating, kN 


In some applications it is not possible to 

obtain the requisite minimum load. However, 

for caged bearings that are oil 

lubricated, lower minimum loads are 

permissible. These loads can be calculated 

when n/n r ≤ 0,3 from 

P 0m = 0,002 C 0 

and when 0,3 < n/n r ≤ 2 from 

Fig 

5 

P 

n 

0m = 0,002 C 0 ( 1 + 2 n – 0,3 r 

) 

where 

P 0m = minimum equivalent static bearing 

load, kN 

C 0 = basic static load rating, kN 


n = rotational speed, r/min 

n r = reference speed, r/min 


When starting up at low temperatures 

or when the lubricant is highly viscous, 

even greater minimum loads than P 0m 

= 0,007 C 0 and 0,01 C 0 respectively 

may be required. The weight of the 

components supported by the bearing, 

together with external forces, generally 

exceeds the requisite minimum 

load. If this is not the case, the CARB 

bearing must be subjected to an additional 

radial load. 

Equivalent dynamic bearing load 


P = F r 

Equivalent static bearing load 


P 0 = F r 

CARB bearings on adapter sleeves 

For CARB bearings with a tapered 

bore, SKF also supplies adapter sleeves 

(➔ fig 6 ) and withdrawal sleeves. 

These enable the bearings to be quickly 

and easily secured on smooth or 

stepped shafts. Detailed information on 

CARB bearings on adapter sleeves can 

be found in the product table starting on 

page 58. 

Where appropriate, modified 

adapter sleeves of the E, L and TL 

designs, e.g. H 310 E, are available for 

CARB toroidal roller bearings, to prevent 

the locking device from fouling 

the cage. With adapter sleeves of 

• series H … E, the standard lock nut 

with locking washer (KM + MB) is replaced 

by a KMFE lock nut (➔ fig 7 ), 

a b c d 

Cages for CARB bearings 

42


Page ............. 3 Page ............. 12 Designation scheme 

• series OH … HE the standard lock 

nut HM is replaced by a HME nut 

with a changed front face (➔ fig 8 ), 

• L-design differs from the standard 

design in that the standard lock nut 

KM and locking washer MB have 

been replaced by a KML nut with 

MBL locking washer; these have 

a lower sectional height (➔ fig 9 ), 

• TL-design, the standard HM 31 lock 

nut with MS 31 locking clip have 

been replaced with the corresponding 

HM 30 nut and MS 30 locking 

clip; these have a lower sectional 

height. 

CARB bearing on adapter sleeve 

Examples C 2215 TN9/C3 C 22 15 TN9/C3 

C 3160 K/HA3C4 C 31 60 K HA3C4 

Prefix 

C 

BSC- 

Bearing with standardised 

dimensions 

Special bearing 

ISO-Dimension Series 

39, 49, 59, 69 ISO Diameter Series 9 

30, 40, 50, 60 ISO Diameter Series 0 

31, 41 ISO Diameter Series 1 

22, 32 ISO Diameter Series 2 

23 ISO Diameter Series 3 

Size identification 

05 × 5 25 mm bore diameter 

to 

96 × 5 480 mm bore diameter 

from 

/500 Bore diameter uncoded in millimetres 

Diagram 

2 

3 

Fig 

6 

Bore 

– Cylindrical bore 

K Tapered bore, taper 1:12 

K30 Tapered bore, taper 1:30 

Other features 

Fig 

Fig 

7 

8 

Sleeve of series 

H … E with a 

KMFE lock nut 

– Steel window-type cage 

– Normal radial internal clearance 

C1 Radial internal clearance smaller than C2 

C2 Radial internal clearance smaller than Normal 

C3 Radial internal clearance greater than Normal 

C4 Radial internal clearance greater than C3 

C5 Radial internal clearance greater than C4 

2CS Sheet steel reinforced nitrile rubber seals 

(NBR) on both sides of the bearing 1) 

2CS5 Sheet steel reinforced hydrogenated nitirile rubber 

seals (HNBR) on both sides of the bearing 2) 

HA3 Case hardened inner ring 

M Machined brass window-type cage 

MB Machined inner ring centred brass cage 

2NS Highly efficient nitrile rubber seals on 

both sides of the bearing 2) 

TN9 Injection moulded cage of glass fibre reinforced 

polyamide 4,6 

V Full complement of rollers (no cage) 

VG114 Surface hardened pressed steel cage 

VE240 Bearing modified for greater axial displacement 

1) 

Bearings with CS seals are filled to 40 % of the free space in the bearing 

2) 

Bearings with CS5 seals as well as with NS seals are filled to between 70 and 100 % of the free space in 

the bearing 


OH … HE with 

a modified HME 

lock nut 

Designation scheme for CARB toroidal roller bearings 

Fig 

9 

Designation 

The complete designation of a CARB 

toroidal roller bearing is made up of 

• any supplementary designations 

used to identify certain features of 

the bearing. 


H … L with a KML 

lock nut plus an 

MBL locking 

washer 

• the prefix C, 

• the ISO Dimension Series 

identification, 

• the size identification, and 

Diagram 2 shows the designation 

scheme and the meaning of the various 

letters and figures in the order in which 

they appear. 

43


Page ............. 3 Page ............. 12 CARB toroidal roller bearings 

d 25 – 60 mm 

B 

r2 

r1 

r1 r2 

s 1 

s2 

D 

D1 d d2 d 

Cylindrical bore Tapered bore Full complement 

Principal Basic load ratings Fatigue Speed ratings Mass Designations 

dimensions dynamic static load Refer- Limiting Bearing with 

limit ence speed cylindrical tapered 

d D B C C 0 P u speed bore bore 

mm kN kN r/min kg – 

25 52 18 44 40 4,55 13 000 18 000 0,17 C 2205 TN9 C 2205 KTN9 

52 18 58,5 50 5,5 – 7 000 0,18 C 2205 V C 2205 KV 

30 55 45 134 180 19,6 – 3 000 0,50 C 6006 V – 

62 20 69,5 62 7,2 11 000 15 000 0,27 C 2206 TN9 C 2206 KTN9 

62 20 76,5 71 8,3 – 6 000 0,29 C 2206 V C 2206 KV 

35 72 23 83 80 9, 3 9 500 13 000 0,43 C 2207 TN9 C 2207 KTN9 

72 23 95 96,5 11,2 – 5 000 0,45 C 2207 V C 2207 KV 

40 62 22 76,5 100 11 – 4 300 0,25 C 4908 V C 4908 K30V 

62 30 104 143 16 – 3 400 0,35 C 5908 V – 

62 40 122 180 19,3 – 2 800 0,47 C 6908 V – 

80 23 90 86,5 10,2 8 000 11 000 0,50 C 2208 TN9 C 2208 KTN9 

80 23 102 104 12 – 4 500 0,53 C 2208 V C 2208 KV 

45 68 22 81,5 112 12,9 – 3 800 0,30 C 4909 V C 4909 K30V 

68 30 110 163 18,3 – 3 200 0,41 C 5909 V – 

68 40 132 200 22 – 2 600 0,55 C 6909 V – 

85 23 93 93 10,8 8 000 11 000 0,55 C 2209 TN9 C 2209 KTN9 

85 23 106 110 12,9 – 4 300 0,58 C 2209 V C 2209 KV 

50 72 22 86,5 125 13,7 – 3 600 0,29 C 4910 V C 4910 K30V 

72 30 118 180 20,4 – 2 800 0,42 C 5910 V – 

72 40 140 224 24,5 – 2 200 0,54 C 6910 V – 

80 30 116 140 16 5 000 7 500 0,55 C 4010 TN9 C 4010 K30TN9 

80 30 137 176 20 – 3 000 0,59 C 4010 V C 4010 K30V 

90 23 98 100 11,8 7 000 9 500 0,59 C 2210 TN9 C 2210 KTN9 

90 23 114 122 14,3 – 3 800 0,62 C 2210 V C 2210 KV 

55 80 25 106 153 18 – 3 200 0,43 C 4911 V C 4911 K30V 

80 34 143 224 25 – 2 600 0,60 C 5911 V – 

80 45 180 300 32,5 – 2 000 0,81 C 6911 V – 

100 25 116 114 13,4 6 700 9 000 0,79 C 2211 TN9 C 2211 KTN9 

100 25 132 134 16 – 3 400 0,81 C 2211 V C 2211 KV 

60 85 25 112 170 19,6 – 3 000 0,46 C 4912 V C 4912 K30V 

85 34 150 240 26,5 – 2 400 0,64 C 5912 V – 

85 45 190 335 36 – 1 900 0,84 C 6912 V – 

110 28 143 156 18,3 5 600 7 500 1,10 C 2212 TN9 C 2212 KTN9 

110 28 166 190 22,4 – 2 800 1,15 C 2212 V C 2212 KV 

Please check availability of the bearing before incorporating it in a bearing arrangement design 

44


Page ............. 3 Page ............. 12 

C a 

r a 

r a 

C a 

r a 

Da 

d 

a 

d a D a 

3 

Dimensions Abutment and fillet dimensions Calculation 

factors 

d d 2 D 1 r 1,2 

1) 

s 1 

1) 

s 2 d a 

2) 

d a 

3) 

D a D a 

4) 

C a r a k 1 k 2 

≈ ≈ min ≈ ≈ min max min max min max 

mm min – 

25 32,1 43,3 1 5,8 – 30,6 32 42 46,4 0,3 1 0,09 0,126 

32,1 43,3 1 5,8 2,8 30,6 39 – 46,4 – 1 0,09 0,126 

30 38,5 47,3 1 7,9 4,9 35,6 43 – 49,4 – 1 0,102 0,096 

37,4 53,1 1 4,5 – 35,6 37 51 56,4 0,3 1 0,101 0,111 

37,4 53,1 1 4,5 1,5 35,6 49 – 56,4 – 1 0,101 0,111 

35 44,8 60,7 1,1 5,7 – 42 44 59 65 0,1 1 0,094 0,121 

44,8 60,7 1,1 5,7 2,7 42 57 – 65 – 1 0,094 0,121 

40 46,1 55,3 0,6 4,7 1,7 43,2 52 – 58,8 – 0,6 0,099 0,114 

45,8 54,6 0,6 5 2 43,2 45 – 58,8 0,6 0,096 0,106 

46,6 53,8 0,6 9,4 6,4 43,2 46 – 58,8 0,6 0,113 0,088 

52,4 69,9 1,1 7,1 – 47 52 68 73 0,3 1 0,093 0,128 

52,4 69,9 1,1 7,1 4,1 47 66 – 73 – 1 0,093 0,128 

45 51,6 60,5 0,6 4,7 1,7 48,2 51 – 64,8 – 0,6 0,114 0,1 

51,3 60,1 0,6 5 2 48,2 51 – 64,8 – 0,6 0,096 0,108 

52,1 59,3 0,6 9,4 6,4 48,2 52 – 64,8 – 0,6 0,113 0,09 

55,6 73,1 1,1 7,1 – 52 55 71 78 0,3 1 0,095 0,128 

55,6 73,1 1,1 7,1 4,1 52 69 – 78 – 1 0,095 0,128 

50 56,9 66,1 0,6 4,7 1,7 53,2 62 – 68,8 – 0,6 0,103 0,114 

56,8 65,7 0,6 5 2 53,2 56 – 68,8 – 0,6 0,096 0,11 

57,5 65 0,6 9,4 6,4 53,2 61 – 68,8 – 0,6 0,093 0,113 

57,6 70,8 1 6 – 54,6 57 69 75,4 0,1 1 0,103 0,107 

57,6 70,8 1 6 3 54,6 67 – 75,4 – 1 0,103 0,107 

61,9 79,4 1,1 7,1 – 57 61 77 83 0,8 1 0,097 0,128 

61,9 79,4 1,1 7,1 3,9 57 73 – 83 – 1 0,097 0,128 

55 62 72,1 1 5,5 2,5 59,6 62 – 80,4 – 1 0,107 0,105 

62,8 72,4 1 6 3 59,6 62 – 80,4 – 1 0,097 0,109 

62,8 71,3 1 7,9 4,9 59,6 62 – 80,4 – 1 0,096 0,105 

65,8 86,7 1,5 8,6 – 64 65 84 91 0,3 1,5 0,094 0,133 

65,8 86,7 1,5 8,6 5,4 64 80 – 91 – 1,5 0,094 0,133 

60 68 78,2 1 5,5 2,3 64,6 68 – 80,4 – 1 0,107 0,108 

66,8 76,5 1 6 2,8 64,6 66 – 80,4 – 1 0,097 0,11 

68,7 77,5 1 7.9 4,7 64,6 72 – 80,4 – 1 0,108 0,096 

77,1 97,9 1,5 8,5 – 69 77 95 101 0,3 1,5 0,1 0,123 

77,1 97,9 1,5 8,5 5,3 69 91 – 101 – 1,5 0,1 0,123 

1) 

Permissible axial displacement from normal position of one bearing ring in relation to the other (➔ page 40) 

2) 

To clear the cage for caged bearings or to clear the snap ring for full complement bearings 

3) 

To clear the cage for caged bearings 

4) 

Minimum width of free space for bearings with cage in normal position (➔ page 18) 

45



d 65 – 95 mm 

B 

r2 

r1 

r1 r2 

s 1 

s2 

D 

D1 d d2 d 





d D B C C 0 P u bore bore 


65 90 25 116 180 20,8 – 2 800 0,50 C 4913 V C 4913 K30V 

90 34 156 260 30 – 2 200 0,70 C 5913 V – 

90 45 196 355 38 – 1 800 0,93 C 6913 V – 

100 35 196 275 32 – 2 400 1,00 C 4013 V C 4013 K30V 

120 31 180 180 21,2 5 300 7 500 1,40 C 2213 TN9 C 2213 KTN9 

120 31 204 216 25,5 – 2 400 1,47 C 2213 V C 2213 KV 

70 100 30 163 240 28 – 2 600 0,78 C 4914 V C 4914 K30V 

100 40 196 310 34,5 – 2 000 1,00 C 5914 V – 

100 54 265 455 49 – 1 700 1,40 C 6914 V – 

125 31 186 196 23,2 5 000 7 000 1,45 C 2214 TN9 C 2214 KTN9 

125 31 212 228 27 – 2 400 1,50 C 2214 V C 2214 KV 

150 51 405 430 49 3 800 5 000 4,25 C 2314 C 2314 K 

75 105 30 166 255 30 – 2 400 0,82 C 4915 V C 4915 K30V 

105 40 204 325 37,5 – 1 900 1,10 C 5915 V – 

105 54 204 325 37,5 – 1 600 1,40 C 6915 V/VE240 – 

115 40 236 345 40 – 2 000 1,50 C 4015 V C 4015 K30V 

130 31 196 208 25,5 4 800 6 700 1,60 C 2215 C 2215 K 

130 31 220 240 29 – 2 200 1,65 C 2215 V C 2215 KV 

160 55 425 465 52 3 600 4 800 5,20 C 2315 C 2315 K 

80 110 30 173 275 31,5 – 2 200 0,87 C 4916 V C 4916 K30V 

110 40 208 345 40 – 1 800 1,20 C 5916 V – 

140 33 220 250 28,5 4 500 6 000 2,00 C 2216 C 2216 K 

140 33 255 305 34,5 – 2 000 2,10 C 2216 V C 2216 KV 

170 58 510 550 61 3 400 4 500 6,20 C 2316 C 2316 K 

85 120 35 224 355 40,5 – 2 000 1,30 C 4917 V C 4917 K30V 

120 46 275 465 52 – 1 700 1,70 C 5917 V – 

150 36 275 320 36,5 4 300 5 600 2,60 C 2217 C 2217 K 

150 36 315 390 44 – 1 800 2,80 C 2217 V C 2217 KV 

180 60 540 600 65,5 3 200 4 300 7,30 C 2317 C 2317 K 

90 125 35 186 315 35,5 – 2 000 1,30 C 4918 V C 4918 K30V 

125 46 224 400 44 – 1 600 1,75 C 5918 V – 

150 72 455 670 73,5 – 1 500 5,10 BSC-2039 V – 

160 40 325 380 42,5 3 800 5 300 3,30 C 2218 C 2218 K 

160 40 365 440 49 – 1 500 3,40 C 2218 V C 2218 KV 

190 64 610 695 73,5 2 800 4 000 8,50 C 2318 C 2318 K 

95 170 43 360 400 44 3 800 5 000 4,00 C 2219 C 2219 K 

200 67 610 695 73,5 2 800 4 000 10,0 C 2319 C 2319 K 


46


Page ............. 3 Page ............. 12 

C a 

r a 

r a 

C a 

r a 

Da 

d 

a 

d a D a 

3 


factors 

d d 2 D 1 r 1,2 

1) 

s 1 

1) 

s 2 d a 

2) 

d a 

3) 

D a D a 

4) 

C a r a k 1 k 2 


mm mm – 

65 72,1 82,2 1 5,5 2,3 69,6 72 – 85,4 – 1 0,107 0,109 

72,9 82,6 1 6 2,8 69,6 72 – 85,4 – 1 0,097 0,111 

72,9 81,4 1 7,9 4,7 69,6 72 – 85,4 – 1 0,096 0,107 

74,2 89,1 1,1 6 2,8 71 74 – 94 – 1 0,1 0,108 

79 106 1,5 9,6 – 74 79 102 111 0,2 1,5 0,097 0,127 

79 106 1,5 9,6 5,3 74 97 – 111 – 1,5 0,097 0,127 

70 78 91 1 6 2,8 74,6 78 – 95,4 – 1 0,107 0,107 

78,7 90,3 1 9,4 6,2 74,6 78 – 95,4 – 1 0,114 0,095 

79,1 89,8 1 9 5,8 74,6 79 – 95,4 – 1 0,102 0,1 

83,7 111 1,5 9,6 – 79 83 107 116 0,4 1,5 0.098 0,127 

83,7 111 1,5 9,6 5,3 79 102 – 116 – 1,5 0,098 0,127 

91,4 130 2,1 9,1 – 82 105 120 138 2,2 2 0,11 0,099 

75 83,1 96,1 1 6 2,8 79,6 83 – 100 – 1 0,107 0,108 

83,6 95,5 1 9,4 6,2 79,6 89 – 100 – 1 0,098 0,114 

83,6 95,5 1 9,2 9,2 79,6 88 – 100 – 1 0,073 0,154 

87,6 104 1,1 9,4 5,1 81 87 – 109 – 1 0,115 0,097 

88,5 115 1,5 9,6 – 84 98 110 121 1,2 1,5 0,099 0,127 

88,5 115 1,5 9,6 5,3 84 105 – 121 – 1,5 0,099 0,127 

98,5 135 2,1 13,1 – 87 110 130 148 2,2 2 0,103 0,107 

80 88,2 101 1 6 1,7 84,6 88 – 105 – 1 0,107 0,11 

88,8 101 1 9,4 5,1 84,6 88 – 105 – 1 0,114 0,098 

98,1 125 2 9,1 – 91 105 120 129 1,2 2 0,104 0,121 

98,1 125 2 9,1 4,8 91 115 – 129 – 2 0,104 0,121 

102 145 2,1 10,1 – 92 115 135 158 2,4 2 0,107 0,101 

85 94,5 109 1,1 6 1,7 91 94 – 114 – 1 0,1 0,114 

95 109 1,1 8,9 4,6 91 95 – 114 – 1 0,098 0,109 

104 133 2 7,1 – 96 110 125 139 1,3 2 0,114 0,105 

104 133 2 7,1 1,7 96 115 – 139 – 2 0,114 0,105 

110 153 3 12,1 – 99 125 145 166 2,4 2,5 0,105 0,105 

90 102 113 1,1 11 6,7 96 100 – 119 – 1 0,125 0,098 

102 113 1,1 15,4 11,1 96 105 – 119 – 1 0,089 0,131 

109 131 2 19,7 19,7 101 115 – 139 – 2 0,087 0,123 

112 144 2 9,5 – 101 120 130 149 1,4 2 0,104 0,117 

112 144 2 9,5 5,4 101 125 – 149 – 2 0,104 0,117 

119 166 3 9,6 – 104 135 155 176 2 2,5 0,108 0,101 

95 113 149 2,1 10,5 – 107 112 149 158 4,2 2 0,114 0,104 

120 166 3 12,6 – 109 135 155 186 2,1 2,5 0,103 0,106 

1) 


2) 


3) 


4) 


47



d 100 – 160 mm 

B 

r2 

r1 

r1 r2 

s 1 

D 

D1 d d2 d 







100 140 40 275 450 49 – 1 700 1,90 C 4920 V C 4920 K30V 

140 54 375 640 68 – 1 400 2,70 C 5920 V – 

150 50 355 530 57 – 1 400 3,05 C 4020 V C 4020 K30V 

150 67 510 865 90 – 1 100 4,30 C 5020 V – 

165 52 415 540 58,5 3 200 4 300 4,40 C 3120 C 3120 K 

165 52 475 655 69,5 – 1 300 4,40 C 3120 V – 

165 65 475 655 69,5 – 1 300 5,25 C 4120 V/VE240 C 4120 K30V/VE240 

170 65 475 655 69,5 – 1 300 5,95 BSC-2034 V – 

180 46 415 465 47,5 3 600 4 800 4,85 C 2220 C 2220 K 

215 73 800 880 91,5 2 600 3 600 12,5 C 2320 C 2320 K 

110 170 45 355 480 51 3 200 4 500 3,50 C 3022 C 3022 K 

170 60 500 800 83 – 1 200 5,15 C 4022 V C 4022 K30V 

180 69 670 1 000 102 – 900 7,05 C 4122 V C 4122 K30V 

200 53 530 620 64 3 200 4 300 6,90 C 2222 C 2222 K 

120 180 46 375 530 55 3 000 4 000 3,90 C 3024 C 3024 K 

180 46 430 640 67 – 1 400 4,05 C 3024 V C 3024 KV 

180 60 530 880 90 – 1 100 5,50 C 4024 V C 4024 K30V 

200 80 780 1 120 114 – 750 10,5 C 4124 V C 4124 K30V 

215 58 610 710 72 3 000 4 000 8,60 C 2224 C 2224 K 

215 76 750 980 98 2 400 3 200 11,5 C 3224 C 3224 K 

130 200 52 390 585 58,5 2 800 3 800 5,90 C 3026 C 3026 K 

200 69 620 930 91,5 1 900 2 800 7,84 C 4026 C 4026 K30 

200 69 720 1 120 112 – 850 8,05 C 4026 V C 4026 K30V 

210 80 750 1 100 108 – 670 10,5 C 4126 V/VE240 C 4126 K30V/VE240 

230 64 735 930 93 2 800 3 800 11,0 C 2226 C 2226 K 

140 210 53 490 735 72 2 600 3 400 6,30 C 3028 C 3028 K 

210 69 750 1 220 118 – 800 8,55 C 4028 V C 4028 K30V 

225 85 1 000 1 600 153 – 630 14,2 C 4128 V C 4128 K30V 

250 68 830 1 060 102 2 400 3 400 13,8 C 2228 C 2228 K 

150 225 56 540 850 83 2 400 3 200 8,30 C 3030 MB C 3030 KMB 

225 75 780 1 320 125 – 750 10,5 C 4030 V C 4030 K30V 

250 80 880 1 290 122 2 000 2 800 15,0 C 3130 C 3130 K 

250 100 1 220 1 860 173 – 450 20,5 C 4130 V C 4130 K30V 

270 73 980 1 220 116 2 400 3 200 17,5 C 2230 C 2230 K 

160 240 60 600 980 93 2 200 3 000 9,60 C 3032 C 3032 K 

240 80 795 1 160 110 1 600 2 400 12,3 C 4032 C 4032 K30 

240 80 915 1 460 140 – 600 12,6 C 4032 V C 4032 K30V 

270 86 1 000 1 400 132 2 000 2 600 20,0 C 3132 C 3132 K 

270 109 1 460 2 160 200 – 300 26,0 C 4132 V C 4132 K30V 

290 104 1 370 1 830 170 1 700 2 400 28,5 C 3232 C 3232 K 


1) 

Also available in design K/HA3C4 

48


Page ............. 3 Page ............. 12 

C a 

r a 

r a 

C a 

r a 

Da 

d 

a 

d a D a 

3 


factors 

d d 2 D 1 r 1,2 

1) 

s 1 

1) 

s 2 d a 

2) 

d a 

3) 

D a D a 

4) 

C a r a k 1 k 2 


mm mm – 

100 113 130 1,1 9,4 5,1 106 110 – 134 – 1 0,115 0,103 

110 127 1,1 9 4,7 106 105 – 134 – 1 0,103 0,105 

113 135 1,5 14 9,7 109 120 – 141 – 1,5 0,098 0,118 

114 136 1,5 9,3 5 109 125 – 141 – 1,5 0,112 0,094 

119 150 2 10 – 111 119 150 154 4,5 2 0,1 0,112 

119 150 2 10 4,7 111 130 – 154 – 2 0,1 0,112 

120 148 2 17,7 17,7 111 130 – 154 – 2 0,09 0,125 

120 148 2 17,7 17,7 111 130 – 159 – 2 0,09 0,125 

118 157 2,1 10,1 – 112 130 150 168 0.9 2 0,108 0,11 

126 185 3 11.2 – 114 150 170 201 3,2 2,5 0,113 0,096 

110 128 156 2 9,5 – 119 127 157 161 4 2 0,107 0,11 

126 150 2 12 6,6 119 130 – 161 – 2 0,107 0,103 

132 163 2 11,4 4,6 120 145 – 170 – 2 0,111 0,097 

132 176 2,1 11,1 – 122 150 165 188 1,9 2 0,113 0,103 

120 138 166 2 10,6 – 129 145 160 171 0,9 2 0,111 0,109 

138 166 2 10,6 3,8 129 150 – 171 – 2 0,111 0,109 

140 164 2 12 5,2 129 150 – 171 – 2 0,109 0,103 

140 176 2 18 11,2 131 140 – 189 – 2 0,103 0,103 

144 191 2,1 13 – 132 143 192 203 5,4 2 0,113 0,103 

149 190 2,1 17,1 – 132 160 180 203 2,4 2 0,103 0,108 

130 154 180 2 16,5 – 139 152 182 191 4,4 2 0,123 0,1 

149 181 2 11,4 – 139 155 175 191 1,9 2 0,113 0,097 

149 181 2 11,4 4,6 139 165 – 191 – 2 0,113 0,097 

153 190 2 9,7 9,7 141 170 – 199 – 2 0,09 0,126 

152 199 3 9,6 – 144 170 185 216 1,1 2,5 0,113 0,101 

140 163 194 2 11 – 149 161 195 201 4,7 2 0,102 0,116 

161 193 2 11,4 5,9 149 175 – 201 – 2 0,115 0,097 

167 203 2,1 12 5,2 151 185 – 214 – 2 0,111 0,097 

173 223 3 13,7 – 154 190 210 236 2,3 2,5 0,109 0,108 

150 173 204 2,1 2,8 – 161 172 200 214 1,3 2 – 0,108 

173 204 2,1 17,4 10,6 161 185 – 214 – 2 0,107 0,106 

182 226 2,1 13,9 – 162 195 215 238 2,3 2 0,12 0,092 

179 222 2,1 20 10,1 162 175 – 228 – 2 0,103 0,103 

177 236 3 11,2 – 164 200 215 256 2,5 2,5 0,119 0,096 

160 187 218 2,1 15 – 171 186 220 229 5,1 2 0,115 0,106 

181 217 2,1 18,1 – 171 190 210 229 2,2 2 0,109 0,103 

181 217 2,1 18,1 8,2 171 195 – 229 – 2 0,109 0,103 

191 240 2,1 19 – 172 190 242 258 7,5 2 0,099 0,111 

190 241 2,1 21 11,1 172 190 – 258 – 2 0,101 0,105 

194 256 3 19,3 – 174 215 245 276 2,6 2,5 0,112 0,096 

1) 


2) 


3) 


4) 


49



d 170 – 340 mm 

B 

r2 

r1 

r1 r2 

s 1 

s2 

D 

D1 d d2 d 







170 260 67 750 1 160 108 2 000 2 800 12,5 C 3034 C 3034 K 

260 90 1 140 1 860 170 – 480 17,5 C 4034 V C 4034 K30V 

280 88 1 040 1 460 137 1 900 2 600 21,0 C 3134 C 3134 K 

280 109 1 530 2 280 208 – 280 27,0 C 4134 V C 4134 K30V 

310 86 1 270 1 630 150 2 000 2 600 28,0 C 2234 C 2234 K 

180 280 74 880 1 340 125 1 900 2 600 16,5 C 3036 C 3036 K 1) 

280 100 1 320 2 120 193 – 430 23,0 C 4036 V C 4036 K30V 

300 96 1 250 1 730 156 1 800 2 400 26,0 C 3136 C 3136 K 1) 

300 118 1 760 2 700 240 – 220 34,5 C 4136 V C 4136 K30V 

320 112 1 530 2 200 196 1 500 2 000 37,0 C 3236 C 3236 K 

190 290 75 930 1 460 132 1 800 2 400 17,5 C 3038 C 3038 K 1) 

290 100 1 370 2 320 204 – 380 24,5 C 4038 V C 4038 K30V 

320 104 1 530 2 200 196 1 600 2 200 33,5 C 3138 C 3138 K 

320 128 2 040 3 150 275 – 130 43,0 C 4138 V C 4138 K30V 

340 92 1 370 1 730 156 1 800 2 400 34,0 C 2238 C 2238 K 1) 

200 310 82 1 120 1 730 153 1 700 2 400 22,0 C 3040 C 3040 K 1) 

310 109 1 630 2 650 232 – 260 30.5 C 4040 V C 4040 K30V 

340 112 1 600 2 320 204 1 500 2 000 40,0 C 3140 C 3140 K 1) 

340 140 2 360 3 650 315 – 80 54,0 C 4140 V C 4140 K30V 

220 340 90 1 320 2 040 176 1 600 2 200 29,0 C 3044 C 3044 K 1) 

340 118 1 930 3 250 275 – 200 40,0 C 4044 V C 4044 K30V 

370 120 1 900 2 900 245 1 400 1 900 51,0 C 3144 C 3144 K 1) 

400 108 2 000 2 500 216 1 500 2 000 56,5 C 2244 C 2244 K 1) 

240 360 92 1 340 2 160 180 1 400 2 000 31,5 C 3048 C 3048 K 1) 

400 128 2 320 3 450 285 1 300 1 700 63,0 C 3148 C 3148 K 1) 

260 400 104 1 760 2 850 232 1 300 1 800 46,0 C 3052 C 3052 K 1) 

440 144 2 650 4 050 325 1 100 1 500 87,0 C 3152 C 3152 K 1) 

280 420 106 1 860 3 100 250 1 200 1 600 50,0 C 3056 C 3056 K 1) 

460 146 2 850 4 500 355 1 100 1 400 93,0 C 3156 C 3156 K 1) 

300 460 118 2 160 3 750 290 1 100 1 500 71,0 C 3060 M C 3060 KM 

460 160 2 900 4 900 380 850 1 200 95,0 C 4060 M C 4060 K30M 

500 160 3 250 5 200 400 1 000 1 300 120 C 3160 C 3160 K 1) 

320 480 121 2 280 4 000 310 1 000 1 400 76,5 C 3064 M C 3064 KM 

540 176 4 150 6 300 480 950 1 300 160 C 3164 M C 3164 KM 

340 520 133 2 900 5 000 375 950 1 300 100 C 3068 M C 3068 KM 

580 190 4 900 7 500 560 850 1 200 205 C 3168 M C 3168 KM 1) 


1) 

Also aavailable in design K/HA3C4 or KM/HA3C4 

50


Page ............. 3 Page ............. 12 

C a 

r a 

r a 

C a 

r a 

Da 

d 

a 

d a D a 

3 


factors 

d d 2 D 1 r 1,2 

1) 

s 1 

1) 

s 2 d a 

2) 

d a 

3) 

D a D a 

4) 

C a r a k 1 k 2 


mm mm – 

170 200 237 2,1 12,5 – 181 200 238 249 5,8 2 0,105 0,112 

195 235 2,1 17,1 7,2 181 215 – 249 – 2 0,108 0,103 

200 249 2,1 21 – 182 200 250 268 7,6 2 0,101 0,109 

200 251 2,1 21 11,1 182 200 – 268 – 2 0,101 0,106 

209 274 4 16,4 – 187 230 255 293 3 3 0,114 0,1 

180 209 251 2,1 15,1 – 191 220 240 269 2 2 0,112 0,105 

203 247 2,1 20,1 10,2 191 225 – 269 – 2 0,107 0,103 

210 266 3 23,2 – 194 230 255 286 2,2 2,5 0,102 0,111 

211 265 3 20 10,1 194 210 – 286 – 2,5 0,095 0,11 

228 289 4 27,3 – 197 245 275 303 3,2 3 0,107 0,104 

190 225 266 2,1 16,1 – 201 235 255 279 1,9 2 0,113 0,107 

220 263 2,1 20 10,1 201 220 – 279 – 2 0,103 0,106 

228 289 3 19 – 204 227 290 306 9,1 2,5 0,096 0,113 

222 284 3 20 10,1 204 220 – 306 – 2,5 0,094 0,111 

224 296 4 22,5 – 207 250 275 323 1,6 3 0,108 0,108 

200 235 285 2,1 15,2 – 211 250 275 299 2,9 2 0,123 0,095 

229 280 2,1 21 11,1 211 225 – 299 – 2 0,101 0,108 

245 305 3 27,3 – 214 260 307 326 – 2,5 0,108 0,104 

237 302 3 22 12,1 214 235 – 326 – 2,5 0,092 0,112 

220 257 310 3 17,2 – 233 270 295 327 3,1 2,5 0,114 0,104 

251 306 3 20 10,1 233 250 – 327 – 2,5 0,095 0,113 

268 333 4 22,3 – 237 290 315 353 3,5 3 0,114 0,097 

259 350 4 20,5 – 237 295 320 383 1,7 3 0,113 0,101 

240 276 329 3 19,2 – 253 290 315 347 1,3 2,5 0,113 0,106 

281 357 4 20,4 – 257 305 335 383 3,7 3 0,116 0,095 

260 305 367 4 19,3 – 275 325 350 385 3,4 3 0,122 0,096 

314 394 4 26,4 – 277 340 375 423 4,1 3 0,115 0,096 

280 328 389 4 21,3 – 295 350 375 405 1,8 3 0,121 0,098 

336 416 5 28,4 – 300 360 395 440 4,1 4 0,115 0,097 

300 352 417 4 20 – 315 375 405 445 1,7 3 0,123 0,095 

338 409 4 30,4 – 315 360 400 445 2,8 3 0,105 0,106 

362 448 5 30,5 – 320 390 425 480 4,9 4 0,106 0,106 

320 376 440 4 23,3 – 335 395 430 465 1,8 3 0,121 0,098 

372 476 5 26,7 – 340 410 455 520 3,9 4 0,114 0,096 

340 402 482 5 25,4 – 358 430 465 502 1,9 4 0,12 0,099 

405 517 5 25,9 – 360 445 490 560 4,2 4 0,118 0,093 

1) 


2) 


3) 


4) 


51



d 360 – 600 mm 

B 

r2 

r1 

r1 r2 

s 1 

D 

D1 d d2 d 

Cylindrical bore 

Tapered bore 






360 480 90 1 760 3 250 250 1 000 1 400 44,0 C 3972 M C 3972 KM 

540 134 2 900 5 000 375 900 1 200 105 C 3072 M C 3072 KM 1) 

600 192 5 000 8 000 585 800 1 100 215 C 3172 M C 3172 KM 1) 

380 520 106 2 120 4 000 300 950 1 300 65,5 C 3976 MB C 3976 KMB 

560 135 3 000 5 200 390 900 1 200 110 C 3076 M C 3076 KM 

620 194 4 550 7 500 540 750 1 000 230 C 3176 MB C 3176 KMB 

400 540 106 2 160 4 150 305 900 1 300 69,0 C 3980 MB C 3980 KMB 

600 148 3 650 6 200 450 800 1 100 140 C 3080 M C 3080 KM 

650 200 5 000 8 650 610 700 950 275 C 3180 MB C 3180 KMB 

420 560 106 2 160 4 250 310 850 1 200 71,0 C 3984 M C 3984 KM 

620 150 3 800 6 400 465 800 1 100 150 C 3084 M C 3084 KM 

700 224 6 000 10 400 710 670 900 340 C 3184 M C 3184 KM 1) 

440 600 118 2 750 5 300 375 800 1 100 98,0 C 3988 MB C 3988 KMB 

650 157 3 750 6 400 465 750 1 000 185 C 3088 MB C 3088 KMB 

720 226 5 700 9 300 655 670 900 360 C 3188 MB C 3188 KMB 

460 620 118 2 700 5 300 375 800 1 100 100 C 3992 MB C 3992 KMB 

680 163 4 000 7 500 510 700 950 200 C 3092 M C 3092 KM 1) 

760 240 6 800 12 000 800 600 800 430 C 3192 M C 3192 KM 

760 300 8 300 14 300 950 480 630 535 C 4192 M C 4192 K30M 

480 650 128 3 100 6 100 430 750 1 000 120 C 3996 M C 3996 KM 

700 165 4 050 7 800 530 670 900 210 C 3096 M C 3096 KM 

790 248 6 950 12 500 830 560 750 490 C 3196 MB C 3196 KMB 

500 670 128 3 150 6 300 440 700 950 125 C 39/500 M C 39/500 KM 

720 167 4 250 8 300 560 630 900 225 C 30/500 M C 30/500 KM 1) 

830 264 7 500 12 700 850 530 750 550 C 31/500 M C 31/500 KM 1) 

830 325 9 800 17 600 1 140 400 560 720 C 41/500 MB C 41/500 K30MB 

530 710 136 3 550 7 100 490 670 900 150 C 39/530 M C 39/530 KM 

780 185 5 100 9 500 640 600 800 295 C 30/530 M C 30/530 KM 1) 

870 272 8 800 15 600 1 000 500 670 630 C 31/530 M C 31/530 KM 1) 

560 750 140 3 600 7 350 490 600 850 170 C 39/560 M C 39/560 KM 

820 195 5 600 11 000 720 530 750 345 C 30/560 M C 30/560 KM 1) 

920 280 9 500 17 000 1 100 480 670 750 C 31/560 MB C 31/560 KMB 

600 800 150 4 000 8 800 570 560 750 210 C 39/600 M C 39/600 KM 

870 200 6 300 12 200 780 500 700 390 C 30/600 M C 30/600 KM 1) 

980 300 10 200 18 000 1120 430 600 870 C 31/600 MB C 31/600 KMB 


1) 

Also available in design K/HA3C4 or KM/HA3C4 

52


Page ............. 3 Page ............. 12 

C a 

r a 

r a 

C a 

r a 

Da 

d 

a 

d a D a 

3 


factors 

d d 2 D 1 r 1,2 

1) 

s 1 d a 

2) 

d a 

2) 

D a D a 

3) 

C a r a k 1 k 2 

≈ ≈ min ≈ min max min max min max 

mm mm – 

360 394 450 3 17,2 373 405 440 467 1,6 2,5 0,127 0,104 

417 497 5 26,4 378 445 480 522 2 4 0,12 0,099 

423 537 5 27,9 380 460 510 522 3,9 4 0,117 0,094 

380 429 489 4 10 395 425 490 505 9,7 3 – 0,128 

431 511 5 27 398 460 495 542 2 4 0,12 0,1 

450 550 5 19 400 445 555 600 16,4 4 – 0,106 

400 440 500 4 10 415 435 505 525 9,7 3 – 0,128 

458 553 5 30,6 418 480 525 582 2,1 4 0,121 0,099 

485 589 6 10,1 426 480 565 624 4,4 5 – 0,109 

420 462 522 4 21,3 435 480 515 545 1,8 3 0,132 0,098 

475 570 5 32,6 438 510 550 602 2,2 4 0,12 0,1 

508 618 6 34,8 446 540 595 674 3,8 5 0,113 0,098 

440 495 564 4 11 455 490 565 585 10,5 3 – 0,119 

491 587 6 19,7 463 490 565 627 1,7 5 – 0,105 

514 633 6 22 466 510 635 694 19,1 5 – 0,102 

460 508 577 4 11 475 505 580 605 10,4 3 – 0,12 

539 624 6 33,5 486 565 605 654 2,3 5 0,114 0,108 

559 679 7,5 51 492 570 655 728 4,2 6 0,108 0,105 

540 670 7,5 46,2 492 570 655 728 5,6 6 0,111 0,097 

480 529 604 5 20,4 498 550 590 632 2 4 0,133 0,095 

555 640 6 35,5 503 580 625 677 2,3 5 0,113 0,11 

583 700 7,5 24 512 580 705 758 20,6 6 – 0,104 

500 556 631 5 20,4 518 580 615 652 2 4 0,135 0,095 

572 656 6 37,5 523 600 640 697 2,3 5 0,113 0,111 

605 738 7,5 75,3 532 655 705 798 – 6 0,099 0,116 

598 740 7,5 16,3 532 595 705 798 5,9 6 – 0,093 

530 578 657 5 28,4 548 600 640 692 2,2 4 0,129 0,101 

601 704 6 35,7 553 635 685 757 2,5 5 0,12 0,101 

635 781 7,5 44,4 562 680 745 838 4,8 6 0,115 0,097 

560 622 701 5 32,4 578 645 685 732 2,3 4 0,128 0,104 

660 761 6 45,7 583 695 740 793 2,7 5 0,116 0,106 

664 808 7,5 28 592 660 810 888 23,8 6 – 0,111 

600 666 744 5 32,4 618 685 725 782 2,4 4 0,131 0,1 

692 805 6 35,9 623 725 775 847 2,7 5 0,125 0,098 

710 870 7,5 30 632 705 875 948 25,4 6 – 0,105 

1) 


2) 

To clear the cage 

3) 


53



d 630 – 1 250 mm 

B 

r2 

r1 

r1 r2 

s 1 

D 

D1 d d2 d 

Cylindrical bore 

Tapered bore 






630 850 165 4 650 10 000 640 530 700 270 C 39/630 M C 39/630 KM 

920 212 6 800 12 900 830 480 670 465 C 30/630 M C 30/630 KM 1) 

1 030 315 12 200 22 000 1 370 400 560 1 040 C 31/630 MB C 31/630 KMB 

670 900 170 4 900 11 200 695 480 630 310 C 39/670 M C 39/670 KM 

980 230 8 150 16 300 1 000 430 600 580 C 30/670 M C 30/670 KM 1) 

1 090 336 12 000 22 000 1 320 380 530 1 230 C 31/670 MB C 31/670 KMB 

710 950 180 6 000 12 500 780 450 630 355 C 39/710 M C 39/710 KM 

1 030 236 8 800 17 300 1 060 400 560 645 C 30/710 M C 30/710 KM 

1 030 315 10 600 21 600 1 290 320 430 860 C 40/710 M C 40/710 K30M 

1 150 345 12 700 24 000 1 430 360 480 1 410 C 31/710 MB C 31/710 KMB 

750 1 000 185 6 100 13 400 815 430 560 405 C 39/750 M C 39/750 KM 

1 090 250 9 000 18 000 1 100 380 530 770 C 30/750 MB C 30/750 KMB 

1 220 365 16 000 30 500 1 800 320 450 1 700 C 31/750 MB C 31/750 KMB 

800 1 060 195 6 400 14 600 865 380 530 470 C 39/800 M C 39/800 KM 

1 150 258 9 150 18 600 1 120 360 480 860 C 30/800 MB C 30/800 KMB 

1 280 375 15 600 30 500 1 760 300 400 1 870 C 31/800 MB C 31/800 KMB 

850 1 120 200 7 350 16 300 965 360 480 530 C 39/850 M C 39/850 KM 

1 220 272 11 200 24 000 1 370 320 430 1 050 C 30/850 MB C 30/850 KMB 

1 360 400 16 000 32 000 1 830 280 380 2 260 C 31/850 MB C 31/850 KMB 

900 1 180 206 8 150 18 000 1 060 340 450 580 C 39/900 MB C 39/900 KMB 

1 280 280 12 700 26 500 1 530 300 400 1 150 C 30/900 M C 30/900 KM 

950 1 250 224 9 300 22 000 1 250 300 430 745 C 39/950 M C 39/950 KM 

1 360 300 12 900 27 500 1 560 280 380 1 410 C 30/950 MB C 30/950 KMB 

1 000 1 420 308 13 400 29 000 1 630 260 340 1 570 C 30/1000 MB C 30/1000 KMB 

1 580 462 22 800 45 500 2 500 220 300 3 470 C 31/1000 MB C 31/1000 KMB 

1 060 1 400 250 12 500 29 000 1 600 260 340 1 040 C 39/1060 MB C 39/1060 KMB 

1 180 1 540 272 12 900 31 500 1 660 220 300 1 340 C 39/1180 M C 39/1180 KM 

1 250 1 750 375 20 400 45 000 2 320 180 240 2 740 C 30/1250 MB C 30/1250 KMB 


1) 

Also available in design K/HA3C4 or KM/HA3C4 

54


Page ............. 3 Page ............. 12 

C a 

r a 

r a 

C a 

r a 

Da 

d 

a 

d a D a 

3 


factors 

d d 2 D 1 r 1,2 

1) 

s 1 d a 

2) 

d a 

2) 

D a D a 

3) 

C a r a k 1 k 2 


mm mm – 

630 700 784 6 35,5 653 720 770 827 2,4 5 0,121 0,11 

717 840 7,5 48,1 658 755 810 892 2,9 6 0,118 0,104 

749 919 7,5 31 662 745 920 998 26,8 6 – 0,109 

670 764 848 6 40,5 693 765 830 877 2,5 5 0,121 0,113 

775 904 7,5 41,1 698 820 875 952 2,9 6 0,121 0,101 

797 963 7,5 33 702 795 965 1 058 28 6 – 0,104 

710 773 877 6 30,7 733 795 850 927 2,7 5 0,131 0,098 

807 945 7,5 47,3 738 850 910 1 002 3,2 6 0,119 0,104 

803 935 7,5 51,2 738 840 915 1 002 4,4 6 0,113 0,101 

848 1 012 9,5 34 750 845 1 015 1 100 28,6 8 – 0,102 

750 830 933 6 35,7 773 855 910 977 2,7 5 0,131 0,101 

858 993 7,5 25 778 855 995 1 062 21,8 6 – 0,112 

888 1 076 9,5 36 790 885 1 080 1 180 31,5 8 – 0,117 

800 889 990 6 45,7 823 915 970 1 037 2,9 5 0,126 0,106 

913 1 047 7,5 25 828 910 1 050 1 122 22,3 6 – 0,111 

947 1 133 9,5 37 840 945 1 135 1 240 32,1 8 – 0,115 

850 940 1 053 6 35,9 873 960 1 025 1 097 2,9 5 0,135 0,098 

968 1 113 7,5 27 878 965 1 115 1 192 24,1 6 – 0,124 

1 020 1 200 12 40 898 1 015 1 205 1 312 33,5 10 – 0,11 

900 989 1 113 6 20 923 985 1 115 1 157 18,4 5 – 0,132 

1 008 1 172 7,5 45,8 928 1 050 1 130 1 252 3,4 6 0,124 0,1 

950 1 044 1 167 7,5 35 978 1 080 1 145 1 222 3,1 6 0,134 0,098 

1 080 1 240 7,5 30 978 1 075 1 245 1 322 26,2 6 – 0,116 

1 000 1 136 1 294 7,5 30 1 028 1 135 1 295 1 392 26,7 6 – 0,114 

1 179 1 401 12 46 1 048 1 175 1 405 1 532 38,6 10 – 0,105 

1 060 1 175 1 323 7,5 25 1 088 1 170 1 325 1 372 23,4 6 – 0,142 

1 180 1311 1457 7,5 44,4 1 208 1 335 1 425 1 512 4,1 6 0,137 0,097 

1 250 1 397 1 613 9,5 37 1 284 1 395 1 615 1 716 33,9 8 – 0,126 

1) 


2) 


3) 


55


Page ............. 3 Page ............. 12 SealedCARB toroidal 


d 50 – 200 mm 

B 

r2 

r1 

r1 r2 

s 2 

D 

D1 d d2 

Principal Basic load ratings Fatigue Speed rating Mass Designation 

dimensions dynamic static load Limiting 

limit 

speed 

d D B C C 0 P u 


50 72 40 140 224 24,5 200 0,56 C 6910-2CS5V 

60 85 45 150 240 26,5 170 0,83 C 6912-2CS5V 

85 45 190 335 36 – 0,85 C 6912-2NSV 

65 100 35 102 173 19 150 1,10 C 4013-2CS5V 

75 105 54 204 325 37,5 140 1,40 C 6915-2CS5V 

115 40 143 193 23,2 130 1,40 C 4015-2CS5V 

90 125 46 224 400 44 110 1,75 C 5918-2CS5V 

100 150 50 310 450 50 95 2,90 C 4020-2CS5V 

165 65 475 655 69,5 90 5,20 C 4120-2CS5V 

110 170 60 415 585 63 85 4,60 C 4022-2CS5V 

180 69 500 710 75 85 6,60 C 4122-2CS5V 

120 180 60 430 640 67 80 5,10 C 4024-2CS5V 

200 80 710 1 000 100 75 9,70 C 4124-2CS5V 

130 200 69 550 830 85 70 7,50 C 4026-2CS5V 

210 80 750 1 100 108 70 10,5 C 4126-2CS5V 

140 210 69 570 900 88 67 7,90 C 4028-2CS5V 

225 85 780 1 200 116 63 12,5 C 4128-2CS5V 

150 225 75 585 965 93 63 10,0 C 4030-2CS5V 

250 100 1 220 1 860 173 60 20,5 C 4130-2CS5V 

160 240 80 655 1 100 104 60 12,0 C 4032-2CS5V 

270 109 1 460 2 160 200 53 26,0 C 4132-2CS5V 

170 260 90 965 1 630 150 53 17,0 C 4034-2CS5V 

280 109 1 530 2 280 208 53 27,0 C 4134-2CS5V 

180 280 100 1 320 2 120 193 53 23,5 C 4036-2CS5V 

300 118 1 760 2 700 240 48 35,0 C 4136-2CS5V 

190 290 100 1 370 2 320 204 48 24,5 C 4038-2CS5V 

320 128 2 040 3 150 275 45 43,5 C 4138-2CS5V 

200 310 109 1 630 2 650 232 45 31,0 C 4040-2CS5V 

340 140 2 360 3 650 315 43 54,5 C 4140-2CS5V 


56


Page ............. 3 Page ............. 12 

r a 

r a 

Da 

d 

a 

3 

Dimensions Abutment and fillet dimensions Calculation factors 

d d 2 D 1 r 1,2 

1) 

s 2 d a 

2) 

d a D a r a k 1 k 2 

≈ ≈ min ≈ min max max max 

mm mm – 

50 57,6 64,9 0,6 2,8 53,2 57 68,8 0,6 0,113 0,091 

60 68 75,3 1 5,4 64,6 67 80,4 1 0,128 0,083 

68 77,5 1 0,5 64,6 67 80,4 1 0,108 0,096 

65 78,6 87,5 1,1 5,9 71 78 94 1 0,071 0,181 

75 83,6 95,5 1 7,1 79,6 83 100 1 0,073 0,154 

88,5 104 1,1 7,3 81 88 111 1 0,210 0,063 

90 102 113 1,1 4,5 96 101 119 1 0,089 0,131 

100 114 136 1,5 6,2 107 113 143 1,5 0,145 0,083 

120 148 2 7,3 111 119 154 2 0,09 0,125 

110 128 155 2 7,9 119 127 161 2 0,142 0,083 

130 160 2 8,2 121 129 169 2 0,086 0,133 

120 140 164 2 7,5 129 139 171 2 0,085 0,142 

140 176 2 8,2 131 139 189 2 0,126 0,087 

130 152 182 2 8,2 139 151 191 2 0,089 0,133 

153 190 2 7,5 141 152 199 2 0,09 0,126 

140 163 193 2 8,7 149 162 201 2 0,133 0,089 

167 204 2,1 8,9 152 166 213 2 0,086 0,134 

150 175 204 2,1 10,8 161 174 214 2 0,084 0,144 

179 221 2,1 6,4 162 178 238 2 0,103 0,103 

160 188 218 2,1 11,4 170 187 230 2 0,154 0,079 

190 241 2,1 6,7 172 189 258 2 0,101 0,105 

170 201 237 2,1 9 180 199 250 2 0,116 0.097 

200 251 2,1 6,7 182 198 268 2 0,101 0,106 

180 204 246 2,1 6,4 190 202 270 2 0,103 0,105 

211 265 3 6,4 194 209 286 2,5 0,095 0,11 

190 221 263 2,1 6,4 200 219 280 2 0,103 0,106 

222 283 3 6,4 204 220 306 2,5 0,094 0,111 

200 229 280 2,1 6,7 210 227 300 2 0,101 0,108 

237 301 3 7 214 235 326 2,5 0,092 0,112 

1) 


2) 

To clear the seal 

57



on adapter sleeve 

d 1 20 – 80 mm 

D 

s1 

B B2 

s 2 

r2 

r1 

B 1 

D1 d 2 d 1 d 3 

CARB on sleeve H .. E 

CARB on sleeve H 


dimensions dynamic static load Refer- Limiting Bearing Bearing Adapter sleeve 

limit ence speed + 

d 1 D B C C 0 P u speed sleeve 


20 52 18 44 40 4,55 13 000 18 000 0,24 C 2205 KTN9 H 305 E 

52 18 50 48 5,5 – 7 000 0,25 C 2205 KV H 305 E 

25 62 20 69,5 62 7,2 11 000 15 000 0,37 C 2206 KTN9 H 306 E 

62 20 76,5 71 8,3 – 6 000 0,39 C 2206 KV H 306 E 

30 72 23 83 80 9, 3 9 500 13 000 0,59 C 2207 KTN9 H 307 E 

72 23 95 96,5 11,2 – 5 000 0,59 C 2207 KV H 307 E 

35 80 23 90 86,5 10,2 8 000 11 000 0,69 C 2208 KTN9 H 308 E 

80 23 102 104 12 – 4 500 0,70 C 2208 KV H 308 

40 85 23 93 93 10,8 8 000 11 000 0,76 C 2209 KTN9 H 309 E 

85 23 106 110 12,9 – 4 300 0,79 C 2209 KV H 309 E 

45 90 23 98 100 11,8 7 000 9 500 0,85 C 2210 KTN9 H 310 E 

90 23 114 122 14,3 – 3 800 0,89 C 2210 KV H 310 E 

50 100 25 116 114 13,4 6 700 9 000 1,10 C 2211 KTN9 H 311 E 

100 25 132 134 16 – 3 400 1,15 C 2211 KV H 311 E 

55 110 28 143 156 18,3 5 600 7 500 1,45 C 2212 KTN9 H 312 E 

110 28 166 190 22,4 – 2 800 1,50 C 2212 KV H 312 

60 120 31 180 180 21,2 5 300 7 500 1,80 C 2213 KTN9 H 313 E 

120 31 204 216 25,5 – 2 400 1,90 C 2213 KV H 313 

125 31 186 196 23,2 5 000 7 000 2,10 C 2214 KTN9 H 314 E 

125 31 212 228 27 – 2 400 2,20 C 2214 KV H 314 

150 51 405 430 49 3 800 5 000 5,10 C 2314 K H 2314 

65 130 31 196 208 25,5 4 800 6 700 2,30 C 2215 K H 315 E 

130 31 220 240 29 – 2 200 2,40 C 2215 KV H 315 

160 55 425 465 52 3 600 4 800 6,20 C 2315 K H 2315 

70 140 33 220 250 28,5 4 500 6 000 2,90 C 2216 K H 316 E 

140 33 255 305 34,5 – 2 000 3,00 C 2216 KV H 316 

170 58 510 550 61 3 400 4 500 7,40 C 2316 K H 2316 

75 150 36 275 320 36,5 4 300 5 600 3,70 C 2217 K H 317 E 

150 36 315 390 44 – 1 800 3,85 C 2217 KV H 317 

180 60 540 600 65,5 3 200 4 300 8,50 C 2317 K H 2317 

80 160 40 325 380 42,5 3 800 5 300 4,50 C 2218 K H 318 E 

160 40 365 440 49 – 1 500 4,60 C 2218 KV H 318 

190 64 610 695 73,5 2 800 4 000 10,0 C 2318 K H 2318 


58


Page ............. 3 Page ............. 12 

r a 

r a 

B a 

D a d a d b 

C a 

B a d a d b 

D a 

3 


factors 

d 1 d 2 d 3 D 1 B 1 B 2 r 1,2 

1) 

s 1 

1) 

s 2 

2) 

d a d b D a D a B a 

3) 

C a r a k 1 k 2 

≈ ≈ min ≈ ≈ max min min max min min max 

mm mm – 

20 32,1 38 43,3 29 10,5 1 5,8 – 32 28 42 46,4 5 0,3 1 0,09 0,126 

32,1 38 43,3 29 10,5 1 5,8 2,8 39 28 – 46,4 5 – 1 0,09 0,126 

25 37,4 45 53,1 31 10,5 1 4,5 – 37 33 51 56,4 5 0,3 1 0,101 0,111 

37,4 45 53,1 31 10,5 1 4,5 1,5 49 33 – 56,4 5 – 1 0,101 0,111 

30 44,8 52 60,7 35 11,5 1,1 5,7 – 44 39 59 65 5 0,1 1 0,094 0,121 

44,8 52 60,7 35 11,5 1,1 5,7 2,7 57 39 – 65 5 – 1 0,094 0,121 

35 52,4 58 69,9 36 13 1,1 7,1 – 52 44 68 73 5 0,3 1 0,093 0,128 

52,4 58 69,9 36 10 1,1 7,1 4,1 66 44 – 73 5 – 1 0,093 0,128 

40 55,6 65 73,1 39 13 1,1 7,1 – 55 50 71 78 7 0,3 1 0,095 0,128 

55,6 65 73,1 39 13 1,1 7,1 4,1 69 50 – 78 7 – 1 0,095 0,128 

45 61,9 70 79,4 42 14 1,1 7,1 – 61 55 77 83 9 0,8 1 0,097 0,128 

61,9 70 79,4 42 14 1,1 7,1 3,9 73 55 – 83 9 – 1 0,097 0,128 

50 65,8 75 86,7 45 14 1,5 8,6 – 65 60 84 91 10 0,3 1,5 0,094 0,133 

65,8 75 86,7 45 14 1,5 8,6 5,4 80 60 – 91 10 – 1,5 0,094 0,133 

55 77,1 80 97,9 47 14 1,5 8,5 – 77 65 95 101 9 0,3 1,5 0,1 0,123 

77,1 80 97,9 47 13 1,5 8,5 5,3 91 65 – 101 9 – 1,5 0,1 0,123 

60 79 85 106 50 15 1,5 9,6 – 79 70 102 111 8 0,2 1,5 0,097 0,127 

79 85 106 50 14 1,5 9,6 5,3 97 70 – 111 8 – 1,5 0,097 0,127 

83,7 92 111 52 15 1,5 9,6 – 83 75 107 116 9 0,4 1,5 0.098 0,127 

83,7 92 111 52 14 1,5 9,6 5,3 102 75 – 116 9 – 1,5 0,098 0,127 

91,4 92 130 68 14 2,1 9,1 – 105 76 120 138 6 2,2 2 0,11 0,099 

65 88,5 98 115 55 16 1,5 9,6 – 98 80 110 121 12 1,2 1,5 0,099 0,127 

88,5 98 115 55 15 1,5 9,6 5,3 105 80 – 121 12 – 1,5 0,099 0,127 

98,5 98 135 73 15 2,1 13,1 – 110 82 130 148 5 2,2 2 0,103 0,107 

70 98,1 105 125 59 18 2 9,1 – 105 85 120 129 12 1,2 2 0,104 0,121 

98,1 105 125 59 17 2 9,1 4,8 115 85 – 129 12 – 2 0,104 0,121 

102 105 145 78 17 2,1 10,1 – 115 88 135 158 6 2,4 2 0,107 0,101 

75 104 110 133 63 19 2 7,1 – 110 91 125 139 12 1,3 2 0,114 0,105 

104 110 133 63 18 2 7,1 1,7 115 91 – 139 12 – 2 0,114 0,105 

110 110 153 82 18 3 12,1 – 125 94 145 166 7 2,4 2,5 0,105 0,105 

80 112 120 144 65 19 2 9,5 – 120 96 130 149 10 1,4 2 0,104 0,117 

112 120 144 65 18 2 9,5 5,4 125 96 – 149 10 – 2 0,104 0,117 

119 120 166 86 18 3 9,6 – 135 100 155 176 7 2 2,5 0,108 0,101 

1) 


2) 


3) 


59




d 1 85 – 180 mm 

D 

s 1 

s 

B B2 

s 1 

r 

2 

2 

B 3 

r1 

B 1 

D1 d 2 d 1 d 3 

CARB on sleeve H .. (E) 

CARB on sleeve H .. (L) 

CARB on sleeve OH .. H(TL) 






85 170 43 360 400 44 3 800 5 000 5,30 C 2219 K H 319 E 

200 67 610 695 73,5 2 800 4 000 11,5 C 2319 K H 2319 

90 165 52 415 540 58,5 3 200 4 300 6,10 C 3120 K H 3120 E 

165 52 475 655 69,5 – 1 300 6,10 C 3120 KV H 3120 E 

180 46 415 465 47,5 3 600 4 800 6,30 C 2220 K H 320 E 

215 73 800 880 91,5 2 600 3 600 14,5 C 2320 K H 2320 

100 170 45 355 480 51 3 200 4 500 5,50 C 3022 K H 322 E 

200 53 530 620 64 3 200 4 300 8,80 C 2222 K H 322 E 

110 180 46 375 530 55 3 000 4 000 5,70 C 3024 K H 3024 E 

180 46 430 640 67 – 1 400 5,85 C 3024 KV H 3024 

215 58 610 710 72 3 000 4 000 8,60 C 2224 K H 3124 L 

215 76 750 980 98 2 400 3 200 14,2 C 3224 K H 2324 L 

115 200 52 390 585 58,5 2 800 3 800 8,70 C 3026 K H 3026 

230 64 735 930 93 2 800 3 800 14,0 C 2226 K H 3126 L 

125 210 53 490 735 72 2 600 3 400 9,30 C 3028 K H 3028 

250 68 830 1 060 102 2 400 3 400 17,5 C 2228 K H 3128 L 

135 225 56 600 980 93 2 400 3 200 12,0 C 3030 KMB H 3030 E 

250 80 880 1 290 122 2 000 2 800 20,0 C 3130 K H 3130 L 

270 73 980 1 220 116 2 400 3 200 23,0 C 2230 K H 3130 L 

140 240 60 600 980 93 2 200 3 000 14,5 C 3032 K H 3032 

270 86 1 000 1 400 132 2 000 2 600 27,0 C 3132 K H 3132 L 

290 104 1 370 1 830 170 1 700 2 400 36,5 C 3232 K H 2332 L 

150 260 67 750 1 160 108 2 000 2 800 18,0 C 3034 K H 3034 

280 88 1 040 1 460 137 1 900 2 600 29,0 C 3134 K H 3134 L 

310 86 1 270 1 630 150 2 000 2 600 35,0 C 2234 K H 3134 L 

160 280 74 880 1 340 125 1 900 2 600 23,0 C 3036 K H 3036 

300 96 1 250 1 730 156 1 800 2 400 34,0 C 3136 K H 3136 L 

320 112 1 530 2 200 196 1 500 2 000 47,0 C 3236 K H 2336 

170 290 75 930 1 460 132 1 800 2 400 24,0 C 3038 K H 3038 

320 104 1 530 2 200 196 1 600 2 200 44,0 C 3138 K H 3138 L 

340 92 1 370 1 730 156 1 800 2 400 43,0 C 2238 K H 3138 

180 310 82 1 120 1 730 153 1 700 2 400 30,0 C 3040 K H 3040 

340 112 1 600 2 320 204 1 500 2 000 50,5 C 3140 K H 3140 


60


Page ............. 3 Page ............. 12 

r a 

r a 

B a 

D a d a d b 

C a 

B a d a d b 

D a 

3 


factors 

d 1 d 2 d 3 D 1 B 1 B 2 r 1,2 

1) 

s 1 

1) 

s 2 

2) 


3) 

C a r a k 1 k 2 


mm mm – 

85 113 125 149 68 20 2,1 10,5 – 112 102 149 158 9 4,2 2 0,114 0,104 

120 125 166 90 19 3 12,6 – 135 105 155 186 7 2,1 2,5 0,103 0,106 

90 119 130 150 76 21 2 10 – 119 106 150 154 6 4,5 2 0,1 0,112 

119 130 150 76 20 2 10 4,7 130 106 – 154 6 – 2 0,1 0,112 

118 130 157 71 21 2,1 10,1 – 130 108 150 168 8 0.9 2 0,108 0,11 

126 130 185 97 20 3 11.2 – 150 110 170 201 7 3,2 2,5 0,113 0,096 

100 128 145 156 77 21,5 2 9,5 – 127 118 157 160 14 4 2 0,107 0,11 

132 145 176 77 21,5 2,1 11,1 – 150 118 165 188 6 1,9 2 0,113 0,103 

110 138 155 166 72 26 2 10,6 – 145 127 160 170 7 0,9 2 0,111 0,109 

138 145 166 72 22 2 10,6 3,8 150 127 – 170 7 – 2 0,111 0,109 

144 145 191 88 22 2,1 13 – 143 128 192 203 11 5,4 2 0,113 0,103 

149 145 190 112 22 2,1 17,1 – 160 131 180 203 17 2,4 2 0,103 0,108 

115 154 155 180 80 23 2 16,5 – 152 137 182 190 8 4,4 2 0,123 0,1 

152 155 199 92 23 3 9,6 – 170 138 185 216 8 1,1 2,5 0,113 0,101 

125 163 165 194 82 24 2 11 – 161 147 195 200 8 4,7 2 0,102 0,116 

173 165 223 97 24 3 13,7 – 190 149 210 236 8 2,3 2,5 0,109 0,108 

135 173 180 204 87 26 2,1 2,8 – 172 158 200 214 8 1,3 2 – 0,108 

182 180 226 111 26 2,1 13,9 – 195 160 215 238 8 2,3 2 0,12 0,092 

177 180 236 111 26 3 11,2 – 200 160 215 256 15 2,5 2,5 0,119 0,096 

140 187 190 218 93 27,5 2,1 15 – 186 168 220 229 8 5,1 2 0,115 0,106 

191 190 240 119 27,5 2,1 19 – 190 170 242 258 8 7,5 2 0,099 0,111 

194 190 256 147 27,5 3 19,3 – 215 174 245 276 18 2,6 2,5 0,112 0,096 

150 200 200 237 101 28,5 – 2,1 12,5 200 179 238 249 8 5,8 2 0,105 0,112 

200 200 249 122 28,5 – 2,1 21 200 180 250 268 8 7,6 2 0,101 0,109 

209 200 274 122 28,5 – 4 16,4 230 180 255 293 10 3 3 0,114 0,1 

160 209 210 251 109 29,5 – 2,1 15,1 220 189 240 269 8 2 2 0,112 0,105 

210 210 266 131 29,5 – 3 23,2 230 191 255 286 8 2,2 2,5 0,102 0,111 

228 230 289 161 30 – 4 27,3 245 195 275 303 22 3,2 3 0,107 0,104 

170 225 220 266 112 30,5 – 2,1 16,1 235 199 255 279 9 1,9 2 0,113 0,107 

228 220 289 141 30,5 – 3 19 227 202 290 306 9 9,1 2,5 0,096 0,113 

224 240 296 141 31 – 4 22,5 250 202 275 323 21 1,6 3 0,108 0,108 

180 235 240 285 120 31,5 – 2,1 15,2 250 210 275 299 9 2,9 2 0,123 0,095 

245 250 305 150 32 – 3 27,3 260 212 307 326 9 – 2,5 0,108 0,104 

1) 


2) 


3) 


61




d 1 200 – 430 mm 

D 

B B3 

s 1 

B 

r 2 

2 

r1 

B 1 

D1 d 2 d 1 d3 

CARB on sleeve OH .. H(TL) 

CARB on sleeve OH .. HE 






200 340 90 1 320 2 040 176 1 600 2 200 37,0 C 3044 K OH 3044 H 

370 120 1 900 2 900 245 1 400 1 900 64,0 C 3144 K OH 3144 HTL 

400 108 2 000 2 500 216 1 500 2 000 69,0 C 2244 K OH 3144 H 

220 360 92 1 340 2 160 180 1 400 2 000 42,5 C 3048 K OH 3048 H 

400 128 2 320 3 450 285 1 300 1 700 77,0 C 3148 K OH 3148 HTL 

240 400 104 1 760 2 850 232 1 300 1 800 59,0 C 3052 K OH 3052 H 

440 144 2 650 4 050 325 1 100 1 500 105 C 3152 K OH 3152 HTL 

260 420 106 1 860 3 100 250 1 200 1 600 65,0 C 3056 K OH 3056 H 

460 146 2 850 4 500 355 1 100 1 400 115 C 3156 K OH 3156 HTL 

280 460 118 2 160 3 750 290 1 100 1 500 91,0 C 3060 KM OH 3060 H 

500 160 3 250 5 200 400 1 000 1 300 150 C 3160 K OH 3160 H 

300 480 121 2 280 4 000 310 1 000 1 400 95,0 C 3064 KM OH 3064 H 

540 176 4 150 6 300 480 950 1 300 190 C 3164 KM OH 3164 H 

320 520 133 2 900 5 000 375 950 1 300 125 C 3068 KM OH 3068 H 

580 190 4 900 7 500 560 850 1 200 235 C 3168 KM OH 3168 H 

340 480 90 1 760 3 250 250 1 000 1 400 73,0 C 3972 KM OH 3972 HE 

540 134 2 900 5 000 375 900 1 200 135 C 3072 KM OH 3072 H 

600 192 5 000 8 000 585 800 1 100 250 C 3172 KM OH 3172 H 

360 520 106 2 120 4 000 300 950 1 300 96,0 C 3976 KMB OH 3976 HE 

560 135 3 000 5 200 390 900 1 200 145 C 3076 KM OH 3076 H 

620 194 4 550 7 500 540 750 1 000 290 C 3176 KMB OH 3176 HE 

380 540 106 2 160 4 150 305 900 1 300 105 C 3980 KMB OH 3980 HE 

600 148 3 650 6 200 450 800 1 100 175 C 3080 KM OH 3080 H 

650 200 5 000 8 650 610 700 950 345 C 3180 KMB OH 3180 HE 

400 560 106 2 160 4 250 310 850 1 200 105 C 3984 KM OH 3984 HE 

620 150 3 800 6 400 465 800 1 100 180 C 3084 KM OH 3084 H 

700 224 6 000 10 400 710 670 900 395 C 3184 KM OH 3184 H 

410 600 118 2 750 5 300 375 800 1 100 155 C 3988 KMB OH 3988 HE 

650 157 3 750 6 400 465 750 1 000 250 C 3088 KMB OH 3088 HE 

720 226 5 700 9 300 655 670 900 475 C 3188 KMB OH 3188 HE 

430 620 118 2 700 5 300 375 800 1 100 160 C 3992 KMB OH 3992 HE 

680 163 4 000 7 500 510 700 950 270 C 3092 KM OH 3092 H 

760 240 6 800 12 000 800 600 800 540 C 3192 KM OH 3192 H 


62


Page ............. 3 Page ............. 12 

C a 

r a 

B a 

D a d a d b 

3 


factors 

d 1 d 2 d 3 D 1 B 1 B 2 r 1,2 

1) 

s 1 

1) 

s 2 

2) 


3) 

C a r a k 1 k 2 


mm mm – 

200 257 260 310 126 30 41 3 17,2 270 231 295 327 9 3,1 2,5 0,114 0,104 

268 260 333 161 30 41 4 22,3 290 233 315 353 9 3,5 3 0,114 0,097 

259 280 350 161 35 – 4 20,5 295 233 320 383 21 1,7 3 0,113 0,101 

220 276 290 329 133 34 46 3 19,2 290 251 315 347 11 1,3 2,5 0,113 0,106 

281 290 357 172 34 46 4 20,4 305 254 335 383 11 3,7 3 0,116 0,095 

240 305 310 367 145 34 46 4 19,3 325 272 350 385 11 3,4 3 0,122 0,096 

314 310 394 190 34 46 4 26,4 340 276 375 423 11 4,1 3 0,115 0,096 

260 328 330 389 152 38 50 4 21,3 350 292 375 405 12 1,8 3 0,121 0,098 

336 330 416 195 38 50 5 28,4 360 296 395 440 12 4,1 4 0,115 0,097 

280 352 360 417 168 42 54 4 20 375 313 405 445 12 1,7 3 0,123 0,095 

362 380 448 208 40 53 5 30,5 390 318 425 480 12 4,9 4 0,106 0,106 

300 376 380 440 171 42 55 4 23,3 395 334 430 465 13 1,8 3 0,121 0,098 

372 400 476 226 42 56 5 26,7 410 338 455 520 13 3,9 4 0,114 0,096 

320 402 400 482 187 45 58 5 25,4 430 355 465 502 14 1,9 4 0,12 0,099 

405 440 517 254 55 72 5 25,9 445 360 490 560 14 4,2 4 0,118 0,093 

340 394 420 450 144 45 58 3 17,2 405 372 440 467 14 1,6 2,5 0,127 0,104 

417 420 497 188 45 58 5 26,4 445 375 480 522 14 2 4 0,12 0,099 

423 460 537 259 58 75 5 27,9 460 380 510 580 14 3,9 4 0,117 0,094 

360 429 450 489 164 48 62 4 10 425 393 490 505 15 9,7 3 – 0,128 

431 450 511 193 48 62 5 27 460 396 495 542 15 2 4 0,12 0,1 

450 490 550 264 60 77 5 19 445 401 555 600 15 16,4 4 – 0,106 

380 440 470 500 168 52 66 4 10 435 413 505 525 15 9,7 3 – 0,128 

458 470 553 210 52 66 5 30,6 480 417 525 582 15 2,1 4 0,121 0,099 

485 520 589 272 62 82 6 10,1 480 421 565 624 15 4,4 5 – 0,109 

400 462 490 522 168 52 66 4 21,3 480 433 515 545 15 1,8 3 0,132 0,098 

475 490 570 212 52 66 5 32,6 510 437 550 602 16 2,2 4 0,12 0,1 

508 540 618 304 70 90 6 34,8 540 443 595 674 16 3,8 5 0,113 0,098 

410 495 520 564 189 60 77 4 11 490 454 565 585 17 10,5 3 – 0,119 

491 520 587 228 60 77 6 19,7 490 458 565 627 17 1,7 5 – 0,105 

514 560 633 307 70 90 6 22 510 463 635 694 17 19,1 5 – 0,102 

430 508 540 577 189 60 77 4 11 505 474 580 605 17 10,4 3 – 0,12 

539 540 624 234 60 77 6 33,5 565 478 605 657 17 2,3 5 0,114 0,108 

559 580 679 326 75 95 7,5 51 570 484 655 728 17 4,2 6 0,108 0,105 

1) 


2) 


3) 


63




d 1 450 – 800 mm 

D 

B B3 

s 1 

B 

r 2 

2 

r1 

B 1 

D1 d 2 d 1 d3 

CARB on sleeve OH .. H 







450 650 128 3 100 6 100 430 750 1 000 185 C 3996 KM OH 3996 H 

700 165 4 050 7 800 530 670 900 275 C 3096 KM OH 3096 H 

790 248 6 950 12 500 830 560 750 620 C 3196 KMB OH 3196 HE 

470 670 128 3 150 6 300 440 700 950 195 C 39/500 KM OH 39/500 HE 

720 167 4 250 8 300 560 630 900 305 C 30/500 KM OH 30/500 H 

830 264 7 500 12 700 850 530 750 690 C 31/500 KM OH 31/500 H 

500 710 136 3 550 7 100 490 670 900 230 C 39/530 KM OH 39/530 HE 

780 185 5 100 9 500 640 600 800 390 C 30/530 KM OH 30/530 H 

870 272 8 800 15 600 1 000 500 670 770 C 31/530 KM OH 31/530 H 

530 750 140 3 600 7 350 490 600 850 260 C 39/560 KM OH 39/560 HE 

820 195 5 600 11 000 720 530 750 440 C 30/560 KM OH 30/560 H 

920 280 9 500 17 000 1 100 480 670 930 C 31/560 KMB OH 31/560 HE 

560 800 150 4 000 8 800 570 560 750 325 C 39/600 KM OH 39/600 HE 

870 200 6 300 12 200 780 500 700 520 C 30/600 KM OH 30/600 H 

980 300 10 200 18 000 1 120 430 600 1 100 C 31/600 KMB OH 31/600 HE 

600 850 165 4 650 10 000 640 530 700 420 C 39/630 KM OH 39/630 HE 

920 212 6 800 12 900 830 480 670 635 C 30/630 KM OH 30/630 H 

1 030 315 12 200 22 000 1 370 400 560 1 280 C 31/630 KMB OH 31/630 HE 

630 900 170 4 900 11 200 695 480 630 455 C 39/670 KM OH 39/670 H 

980 230 8 150 16 300 1 000 430 600 750 C 30/670 KM OH 30/670 H 

1 090 336 12 000 22 000 1 320 380 530 1 550 C 31/670 KMB OH 31/670 HE 

670 950 180 6 000 12 500 780 450 630 520 C 39/710 KM OH 39/710 HE 

1 030 236 8 800 17 300 1 060 400 560 865 C 30/710 KM OH 30/710 H 

1 150 345 12 700 24 000 1 430 360 480 1 800 C 31/710 KMB OH 31/710 HE 

710 1 000 185 6 100 13 400 815 430 560 590 C 39/750 KM OH 39/750 HE 

1 090 250 9 000 18 000 1 100 380 530 1 000 C 30/750 KMB OH 30/750 HE 

1 220 365 16 000 30 500 1 800 320 450 2 150 C 31/750 KMB OH 31/750 HE 

750 1 060 195 6 400 14 600 865 380 530 715 C 39/800 KM OH 39/800 HE 

1 150 258 9 150 18 600 1 120 360 480 1 150 C 30/800 KMB OH 30/800 HE 

1 280 375 15 600 30 500 1 760 300 400 2 400 C 31/800 KMB OH 31/800 HE 

800 1 120 200 7 350 16 300 965 360 480 785 C 39/850 KM OH 39/850 HE 

1 220 272 11 200 24 000 1 370 320 430 1 050 C 30/850 KMB OH 30/850 HE 

1 360 400 16 000 32 000 1 830 280 380 2 260 C 31/850 KMB OH 31/850 HE 


64


Page ............. 3 Page ............. 12 

C a 

r a 

B a 

D a d a d b 

3 


factors 

d 1 d 2 d 3 D 1 B 1 B 2 r 1,2 

1) 

s 1 

1) 

s 2 

2) 


3) 

C a r a k 1 k 2 


mm mm – 

450 529 560 604 200 60 77 5 20,4 550 496 590 632 18 2 4 0,133 0,095 

555 560 640 237 60 77 6 35,5 580 499 625 677 18 2,3 5 0,113 0,11 

583 620 700 335 75 95 7,5 24 580 505 705 758 18 20,6 6 – 0,104 

470 556 580 631 208 68 85 5 20,4 580 516 615 652 18 2 4 0,135 0,095 

572 580 656 247 68 85 6 37,5 600 519 640 697 18 2,3 5 0,113 0,111 

605 630 738 356 80 100 7,5 75,3 655 527 705 798 18 – 6 0,099 0,116 

500 578 630 657 216 68 90 5 28,4 600 547 640 692 20 2,2 4 0,129 0,101 

601 630 704 265 68 90 6 35,7 635 551 685 757 20 2,5 5 0,12 0,101 

635 670 781 364 80 105 7,5 44,4 680 558 745 838 20 4,8 6 0,115 0,097 

530 622 650 701 227 75 97 5 32,4 645 577 685 732 20 2,3 4 0,128 0,104 

660 650 761 282 75 97 6 45,7 695 582 740 797 20 2,7 5 0,116 0,106 

664 710 808 377 85 110 7,5 28 660 589 810 888 20 23,8 6 – 0,111 

560 666 700 744 239 75 97 5 32,4 685 619 725 782 22 2,4 4 0,131 0,1 

692 700 805 289 75 97 6 35,9 725 623 775 847 22 2,7 5 0,125 0,098 

710 750 870 399 85 110 7,5 30 705 632 875 948 22 25,4 6 – 0,105 

600 700 730 784 254 75 97 6 35,5 720 650 770 827 22 2,4 5 0,121 0,11 

717 730 840 301 75 97 7,5 48,1 755 654 810 892 22 2,9 6 0,118 0,104 

749 800 919 424 95 120 7,5 31 745 663 920 998 22 26,8 6 – 0,109 

630 764 780 848 264 80 102 6 40,5 765 691 830 877 22 2,5 5 0,121 0,113 

775 780 904 324 80 102 7,5 41,1 820 696 875 952 22 2,9 6 0,121 0,101 

797 850 963 456 106 131 7,5 33 795 705 965 1 058 22 28 6 – 0,104 

670 773 830 877 286 90 112 6 30,7 795 732 850 927 26 2,7 5 0,131 0,098 

807 830 945 342 90 112 7,5 47,3 850 736 910 1 002 26 3,2 6 0,119 0,104 

848 900 1 012 467 106 135 9,5 34 845 745 1 015 1 110 26 28,6 8 – 0,102 

710 830 870 933 291 90 112 6 35,7 855 772 910 977 26 2,7 5 0,131 0,101 

858 870 993 356 90 112 7,5 25 855 778 995 1 062 26 21,8 6 – 0,112 

888 950 1 076 493 112 141 9,5 36 885 787 1 080 1 180 26 31,5 8 – 0,117 

750 889 920 990 303 90 112 6 45,7 915 825 970 1 037 28 2,9 5 0,126 0,106 

913 920 1 047 366 90 112 7,5 25 910 829 1 050 1 122 28 22,3 6 – 0,111 

947 1 000 1 133 505 112 141 9,5 37 945 838 1 135 1 240 28 32,1 8 – 0,115 

800 940 980 1 053 308 90 115 6 35,9 960 876 1 025 1 097 28 2,9 5 0,135 0,098 

968 980 1 113 380 90 115 7,5 27 965 880 1 115 1 192 28 24,1 6 – 0,124 

1 020 1 060 1 200 536 118 147 12 40 1 015 890 1 205 1 312 28 33,5 10 – 0,11 

1) 


2) 


3) 


65




d 1 850 – 1 000 mm 

D 

B B3 

s 1 

B 

r 2 

2 

r1 

B 1 

D1 d 2 d 1 d3 

CARB on sleeve OH .. H 







850 1 180 206 8 150 18 000 1 060 340 450 900 C 39/900 KMB OH 39/900 HE 

1 280 280 12 700 26 500 1 530 300 400 1 520 C 30/900 KM OH 30/900 H 

900 1 250 224 9 300 22 000 1 250 300 430 1 100 C 39/950 KM OH 39/950 HE 

1 360 300 12 900 27 500 1 560 280 380 1 800 C 30/950 KMB OH 30/950 HE 

950 1 420 308 13 400 29 000 1 630 260 340 2 000 C 30/1000 KMB OH 30/1000 HE 

1 580 462 22 800 45 500 2 500 220 300 4 300 C 31/1000 KMB OH 31/1000 HE 

1 000 1 400 250 12 500 29 000 1 600 260 340 1 500 C 39/1060 KMB OH 39/1060 HE 


66


Page ............. 3 Page ............. 12 

C a 

r a 

B a 

D a d a d b 

3 


factors 

d 1 d 2 d 3 D 1 B 1 B 2 r 1,2 

1) 

s 1 

1) 

s 2 

2) 


3) 

C a r a k 1 k 2 


mm mm – 

850 989 1 030 1 113 326 100 125 6 20 985 924 1 115 1 157 30 18,4 5 – 0,132 

1 008 1 030 1 172 400 100 125 7,5 45,8 1 050 931 1 130 1 252 30 3,4 6 0,124 0,1 

900 1 044 1 080 1 167 344 100 125 7,5 35 1 080 976 1 145 1 222 30 3,1 6 0,134 0,098 

1 080 1 080 1 240 420 100 125 7,5 30 1 075 983 1 245 1 332 30 26,2 6 – 0,116 

950 1 136 1 140 1 294 430 100 125 7,5 30 1 135 1 034 1 295 1 392 33 26,7 6 – 0,114 

1 179 1 240 1 401 609 125 154 12 46 1 175 1 047 1 405 1 532 33 38,6 10 – 0,105 

1 000 1 175 1 200 1 323 372 100 125 7,5 25 1 170 1 090 1 325 1 392 33 23,4 6 – 0,142 

1) 


2) 


3) 


67



on withdrawal sleeve 

d 1 35 – 95 mm 

B 

r2 

r1 

B 1 

D D 1 G 

B 2 

G1 

d1 d2 

s 1 

s2 


dimensions dynamic static load Refer- Limiting Bearing Bearing Withdrawal sleeve 




35 80 23 90 86,5 10,2 8 000 11 000 0,59 C 2208 KTN9 AH 308 

80 23 102 104 12 – 4 500 0,62 C 2208 KV AH 308 

40 85 23 93 93 10,8 8 000 11 000 0,67 C 2209 KTN9 AH 309 

85 23 106 110 12,9 – 4 300 0,70 C 2209 KV AH 309 

45 90 23 98 100 11,8 7 000 9 500 0,72 C 2210 KTN9 AHX 310 

90 23 114 122 14,3 – 3 800 0,75 C 2210 KV AHX 310 

50 100 25 116 114 13,4 6 700 9 000 0,95 C 2211 KTN9 AHX 311 

100 25 132 134 16 – 3 400 0,97 C 2211 KV AHX 311 

55 110 28 143 156 18,3 5 600 7 500 1,30 C 2212 KTN9 AHX 312 

110 28 166 190 22,4 – 2 800 1,35 C 2212 KV AHX 312 

60 120 31 180 180 21,2 5 300 7 500 1,60 C 2213 KTN9 AH 313 G 

120 31 204 216 25,5 – 2 400 1,70 C 2213 KV AH 313 G 

65 125 31 186 196 23,2 5 000 7 000 1,70 C 2214 KTN9 AH 314 G 

125 31 212 228 27 – 2 400 1,75 C 2214 KV AH 314 G 

150 51 405 430 49 3 800 5 000 4,65 C 2314 K AHX 2314 G 

70 130 31 196 208 25,5 4 800 6 700 1,90 C 2215 K AH 315 G 

130 31 220 240 29 – 2 200 1,95 C 2215 KV AH 315 G 

160 55 425 465 52 3 600 4 800 5,65 C 2315 K AHX 2315 G 

75 140 33 220 250 28,5 4 500 6 000 2,35 C 2216 K AH 316 

140 33 255 305 34,5 – 2 000 2,45 C 2216 KV AH 316 

170 58 510 550 61 3 400 4 500 6,75 C 2316 K AHX 2316 

80 150 36 275 320 36,5 4 300 5 600 3,00 C 2217 K AHX 317 

150 36 315 390 44 – 1 800 3,20 C 2217 KV AHX 317 

180 60 540 600 65,5 3 200 4 300 7,90 C 2317 K AHX 2317 

85 160 40 325 380 42,5 3 800 5 300 3,75 C 2218 K AHX 318 

160 40 365 440 49 – 1 500 3,85 C 2218 KV AHX 318 

190 64 610 695 73,5 2 800 4 000 9,00 C 2318 K AHX 2318 

90 170 43 360 400 44 3 800 5 000 4,50 C 2219 K AHX 319 

200 67 610 695 73,5 2 800 4 000 11,0 C 2319 K AHX 2319 

95 165 52 415 540 58,5 3 200 4 300 5,00 C 3120 K AHX 3120 

165 52 475 655 69,5 – 1 300 5,00 C 3120 KV AHX 3120 

180 46 415 465 47,5 3 600 4 800 5,30 C 2220 K AHX 320 

215 73 800 880 91,5 2 600 3 600 13,5 C 2320 K AHX 2320 


68


Page ............. 3 Page ............. 12 

C a 

Da 

da 

r a 

3 


factors 

d 1 d 2 D 1 B 1 

1) 

B 2 G G 1 r 1,2 

2) 

s 1 

2) 

s 2 

3) 

d a d a 

4) 

D a D a 

5) 

C a r a k 1 k 2 


mm mm – 

35 52,4 69,9 29 32 M 45×1,5 6 1,1 7,1 – 47 52 68 73 0,3 1 0,093 0,128 

52,4 69,9 29 32 M 45×1,5 6 1,1 7,1 4,1 47 66 – 73 – 1 0,093 0,128 

40 55,6 73,1 31 34 M 50×1,5 6 1,1 7,1 – 52 55 71 78 0,3 1 0,095 0,128 

55,6 73,1 31 34 M 50×1,5 6 1,1 7,1 4,1 52 69 – 78 – 1 0,095 0,128 

45 61,9 79,4 35 38 M 55×2 7 1,1 7,1 – 57 61 77 83 0,8 1 0,097 0,128 

61,9 79,4 35 38 M 55×2 7 1,1 7,1 3,9 57 73 – 83 – 1 0,097 0,128 

50 65,8 86,7 37 40 M 60×2 7 1,5 8,6 – 64 65 84 91 0,3 1,5 0,094 0,133 

65,8 86,7 37 40 M 60×2 7 1,5 8,6 5,4 64 80 – 91 – 1,5 0,094 0,133 

55 77,1 97,9 40 43 M 65×2 8 1,5 8,5 – 69 77 95 101 0,3 1,5 0,1 0,123 

77,1 97,9 40 43 M 65×2 8 1,5 8,5 5,3 69 91 – 101 – 1,5 0,1 0,123 

60 79 106 42 45 M 70×2 8 1,5 9,6 – 74 79 102 111 0,2 1,5 0,097 0,127 

79 106 42 45 M 70×2 8 1,5 9,6 5,3 74 97 – 111 – 1,5 0,097 0,127 

65 83,7 111 43 47 M 75×2 8 1,5 9,6 – 79 83 107 116 0,4 1,5 0.098 0,127 

83,7 111 43 47 M 75×2 8 1,5 9,6 5,3 79 102 – 116 – 1,5 0,098 0,127 

91,4 130 64 68 M 75×2 12 2,1 9,1 – 82 105 120 138 2,2 2 0,11 0,099 

70 88,5 115 45 49 M 80×2 8 1,5 9,6 – 84 98 110 121 1,2 1,5 0,099 0,127 

88,5 115 45 49 M 80×2 8 1,5 9,6 5,3 84 105 – 121 – 1,5 0,099 0,127 

98,5 135 68 72 M 80×2 12 2,1 13,1 – 87 110 130 148 2,2 2 0,103 0,107 

75 98,1 125 48 52 M 90×2 8 2 9,1 – 91 105 120 129 1,2 2 0,104 0,121 

98,1 125 48 52 M 90×2 8 2 9,1 4,8 91 115 – 129 – 2 0,104 0,121 

102 145 71 75 M 90×2 12 2,1 10,1 – 92 115 135 158 2,4 2 0,107 0,101 

80 104 133 52 56 M 95×2 9 2 7,1 – 96 110 125 139 1,3 2 0,114 0,105 

104 133 52 56 M 95×2 9 2 7,1 1,7 96 115 – 139 – 2 0,114 0,105 

110 153 74 78 M 95×2 13 3 12,1 – 99 125 145 166 2,4 2,5 0,105 0,105 

85 112 144 53 57 M 100×2 9 2 9,5 – 101 120 130 149 1,4 2 0,104 0,117 

112 144 53 57 M 100×2 9 2 9,5 5,4 101 125 – 149 – 2 0,104 0,117 

119 166 79 83 M 100×2 14 3 9,6 – 104 135 155 176 2 2,5 0,108 0,101 

90 113 149 57 61 M 105×2 10 2,1 10,5 – 107 112 149 158 4,2 2 0,114 0,104 

120 166 85 89 M 105×2 16 3 12,6 – 109 135 155 186 2,1 2,5 0,103 0,106 

95 119 150 64 68 M 110×2 11 2 10 – 111 119 150 154 4,5 2 0,1 0,112 

119 150 64 68 M 110×2 11 2 10 4,7 111 130 – 154 – 2 0,1 0,112 

118 157 59 63 M 110×2 10 2,1 10,1 – 112 130 150 168 0.9 2 0,108 0,11 

126 185 90 94 M 110×2 16 3 11.2 – 114 150 170 201 3,2 2,5 0,113 0,096 

1) 

Width before sleeve is driven into bearing bore 

2) 


3) 


4) 


5) 


69




d 1 105 – 160 mm 

B 

r2 

r1 

B 1 

D D 1 G 

B 2 

G1 

d1 d2 

s 1 

s2 






105 170 45 355 480 51 3 200 4 500 4,25 C 3022 K AHX 3122 

180 69 670 1 000 102 – 900 7,75 C 4122 K30V AH 24122 

200 53 530 620 64 3 200 4 300 7,65 C 2222 K AHX 3122 

115 180 46 375 530 55 3 000 4 000 4,60 C 3024 K AHX 3024 

180 46 430 640 67 – 1 400 4,75 C 3024 KV AHX 3024 

180 60 530 880 90 – 1 100 6,20 C 4024 K30V AH 24024 

200 80 780 1 120 114 – 750 11,5 C 4124 K30V AH 24124 

215 58 610 710 72 3 000 4 000 9,50 C 2224 K AHX 3124 

215 76 750 980 98 2 400 3 200 13,0 C 3224 K AHX 3224 G 

125 200 52 390 585 58,5 2 800 3 800 6,80 C 3026 K AHX 3026 

200 69 620 930 91,5 1 900 2 800 8,70 C 4026 K30 AH 24026 

200 69 720 1 120 112 – 850 8,90 C 4026 K30V AH 24026 

210 80 750 1 100 108 – 670 11,5 C 4126 K30V/VE240 AH 24126 

230 64 735 930 93 2 800 3 800 12,0 C 2226 K AHX 3126 

135 210 53 490 735 72 2 600 3 400 7,30 C 3028 K AHX 3028 

210 69 750 1 220 118 – 800 9,50 C 4028 K30V AH 24028 

225 85 1 000 1 600 153 – 630 15,5 C 4128 K30V AH 24128 

250 68 830 1 060 102 2 400 3 400 15,5 C 2228 K AHX 3128 

145 225 56 540 850 83 2 400 3 200 9,40 C 3030 KMB AHX 3030 

225 75 780 1 320 125 – 750 11,5 C 4030 K30V AH 24030 

250 80 880 1 290 122 2 000 2 800 16,5 C 3130 K AHX 3130 G 

250 100 1 220 1 860 173 – 450 22,0 C 4130 K30V AH 24130 

270 73 980 1 220 116 2 400 3 200 19,0 C 2230 K AHX 3130 G 

150 240 60 600 980 93 2 200 3 000 11,5 C 3032 K AH 3032 

240 80 795 1 160 110 1 600 2 400 14,7 C 4032 K30 AH 24032 

240 80 915 1 460 140 – 600 15,0 C 4032 K30V AH 24032 

270 86 1 000 1 400 132 2 000 2 600 23,0 C 3132 K AH 3132 G 

270 109 1 460 2 160 200 – 300 29,0 C 4132 K30V AH 24132 

290 104 1 370 1 830 170 1 700 2 400 31,0 C 3232 K AH 3232 G 

160 260 67 750 1 160 108 2 000 2 800 15,0 C 3034 K AH 3034 

260 90 1 140 1 860 170 – 480 20,0 C 4034 K30V AH 24034 

280 88 1 040 1 460 137 1 900 2 600 24,0 C 3134 K AH 3134 G 

280 109 1 530 2 280 208 – 280 30,0 C 4134 K30V AH 24134 

310 86 1 270 1 630 150 2 000 2 600 31,0 C 2234 K AH 3134 G 


70


Page ............. 3 Page ............. 12 

C a 

Da 

da 

r a 

3 


factors 

d 1 d 2 D 1 B 1 

1) 

B 2 G G 1 r 1,2 

2) 

s 1 

2) 

s 2 

3) 

d a d a 

4) 

D a D a 

5) 

C a r a k 1 k 2 


mm mm – 

105 128 156 68 72 M 120×2 11 2 9,5 – 119 127 157 161 4 2 0,107 0,11 

132 163 82 91 M 115×2 13 2 11,4 4,6 120 145 – 170 – 2 0,111 0,097 

132 176 68 72 M 120×2 11 2,1 11,1 – 122 150 165 188 1,9 2 0,113 0,103 

115 138 166 60 64 M 130×2 13 2 10,6 – 129 145 160 171 0,9 2 0,111 0,109 

138 166 60 64 M 130×2 13 2 10,6 3,8 129 150 – 171 – 2 0,111 0,109 

140 164 73 82 M 125×2 13 2 12 5,2 129 150 – 171 – 2 0,109 0,103 

140 176 2 18 11,2 131 140 – 189 – 2 0,103 0,103 

144 191 75 79 M 130×2 12 2,1 13 – 132 143 192 203 5,4 2 0,113 0,103 

149 190 90 94 M 130×2 13 2,1 17,1 – 132 160 180 203 2,4 2 0,103 0,108 

125 154 180 67 71 M 140×2 14 2 16,5 – 139 152 182 191 4,4 2 0,123 0,1 

149 181 83 93 M 140×2 14 2 11,4 – 139 155 175 191 1,9 2 0,113 0,097 

149 181 83 93 M 135×2 14 2 11,4 4,6 139 165 – 191 – 2 0,113 0,097 

153 190 94 104 M 140×2 14 2 9,7 9,7 141 170 – 199 – 2 0,09 0,126 

152 199 78 82 M 140×2 12 3 9,6 – 144 170 185 216 1,1 2,5 0,113 0,101 

135 163 194 68 73 M 150×2 14 2 11 – 149 161 195 201 4,7 2 0,102 0,116 

161 193 83 93 M 145×2 14 2 11,4 5,9 149 175 – 201 – 2 0,115 0,097 

167 203 99 109 M 150×2 14 2,1 12 5,2 151 185 – 214 – 2 0,111 0,097 

173 223 83 88 M 150×2 14 3 13,7 – 154 190 210 236 2,3 2,5 0,109 0,108 

145 173 204 72 77 M 160×3 15 2,1 2,8 – 161 172 200 214 1,3 2 – 0,108 

173 204 90 101 M 155×3 15 2,1 17,4 10,6 161 185 – 214 – 2 0,107 0,106 

182 226 96 101 M 160×3 15 2,1 13,9 – 162 195 215 238 2,3 2 0,12 0,092 

179 222 115 126 M 160×3 15 2,1 20 10,1 162 175 – 228 – 2 0,103 0,103 

177 236 96 101 M 160×3 15 3 11,2 – 164 200 215 256 2,5 2,5 0,119 0,096 

150 187 218 77 82 M 170×3 16 2,1 15 – 171 186 220 229 5,1 2 0,115 0,106 

181 217 95 106 M 170×3 15 2,1 18,1 – 171 190 210 229 2,2 2 0,109 0,103 

181 217 95 106 M 170×3 15 2,1 18,1 8,2 171 195 – 229 – 2 0,109 0,103 

191 240 103 108 M 170×3 16 2,1 19 – 172 190 242 258 7,5 2 0,099 0,111 

190 241 124 135 M 170×3 15 2,1 21 11,1 172 190 – 258 – 2 0,101 0,105 

194 256 124 130 M 170×3 20 3 19,3 – 174 215 245 276 2,6 2,5 0,112 0,096 

160 200 237 85 90 M 180×3 17 2,1 12,5 – 181 200 238 249 5,8 2 0,105 0,112 

195 235 106 117 M 180×3 16 2,1 17,1 7,2 181 215 – 249 – 2 0,108 0,103 

200 249 104 109 M 180×3 16 2,1 21 – 182 200 250 268 7,6 2 0,101 0,109 

200 251 125 136 M 180×3 16 2,1 21 11,1 182 200 – 268 – 2 0,101 0,106 

209 274 104 109 M 180×3 16 4 16,4 – 187 230 255 293 3 3 0,114 0,1 

1) 


2) 


3) 


4) 


5) 


71




d 1 170 – 340 mm 

B 

r2 

r1 

B 1 

D D 1 G 

B 2 

G1 

d1 d2 

s 1 

s2 






170 280 74 880 1 340 125 1 900 2 600 19,0 C 3036 K AH 3036 

280 100 1 320 2 120 193 – 430 26,0 C 4036 K30V AH 24036 

300 96 1 250 1 730 156 1 800 2 400 30,0 C 3136 K AH 3136 G 

300 118 1 760 2 700 240 – 220 38,0 C 4136 K30V AH 24136 

320 112 1 530 2 200 196 1 500 2 000 41,5 C 3236 K AH 3236 G 

180 290 75 930 1 460 132 1 800 2 400 20,5 C 3038 K AH 3038 G 

290 100 1 370 2 320 204 – 380 28,0 C 4038 K30V AH 24038 

320 104 1 530 2 200 196 1 600 2 200 38,0 C 3138 K AH 3138 G 

320 128 2 040 3 150 275 – 130 47,5 C 4138 K30V AH 24138 

340 92 1 370 1 730 156 1 800 2 400 38,0 C 2238 K AH 2238 G 

190 310 82 1 120 1 730 153 1 700 2 400 25,5 C 3040 K AH 3040 G 

310 109 1 630 2 650 232 – 260 34,5 C 4040 K30V AH 24040 

340 112 1 600 2 320 204 1 500 2 000 45,5 C 3140 K AH 3140 

340 140 2 360 3 650 315 – 80 59,0 C 4140 K30V AH 24140 

200 340 90 1 320 2 040 176 1 600 2 200 36,0 C 3044 K AOH 3044 G 

340 118 1 930 3 250 275 – 200 48,0 C 4044 K30V AOH 24044 

370 120 1 900 2 900 245 1 400 1 900 60,0 C 3144 K AOH 3144 

400 108 2 000 2 500 216 1 500 2 000 65,5 C 2244 K AOH 2244 

220 360 92 1 340 2 160 180 1 400 2 000 39,5 C 3048 K AOH 3048 

400 128 2 320 3 450 285 1 300 1 700 75,0 C 3148 K AOH 3148 

240 400 104 1 760 2 850 232 1 300 1 800 55,5 C 3052 K AOH 3052 

440 144 2 650 4 050 325 1 100 1 500 102 C 3152 K AOH 3152 G 

260 420 106 1 860 3 100 250 1 200 1 600 61,0 C 3056 K AOH 3056 

460 146 2 850 4 500 355 1 100 1 400 110 C 3156 K AOH 3156 G 

280 460 118 2 160 3 750 290 1 100 1 500 84,0 C 3060 KM AOH 3060 

460 160 2 900 4 900 380 850 1 200 110 C 4060 K30M AOH 24060 G 

500 160 3 250 5 200 400 1 000 1 300 140 C 3160 K AOH 3160 G 

300 480 121 2 280 4 000 310 1 000 1 400 93,0 C 3064 KM AOH 3064 G 

540 176 4 150 6 300 480 950 1 300 185 C 3164 KM AOH 3164 G 

320 520 133 2 900 5 000 375 950 1 300 120 C 3068 KM AOH 3068 G 

580 190 4 900 7 500 560 850 1 200 230 C 3168 KM AOH 3168 G 

340 540 134 2 900 5 000 375 900 1 200 125 C 3072 KM AOH 3072 G 

600 192 5 000 8 000 585 800 1 100 245 C 3172 KM AOH 3172 G 


72


Page ............. 3 Page ............. 12 

C a 

Da 

da 

r a 

3 


factors 

d 1 d 2 D 1 B 1 

1) 

B 2 G G 1 r 1,2 

2) 

s 1 

2) 

s 2 

3) 

d a d a 

4) 

D a D a 

5) 

C a r a k 1 k 2 


mm mm – 

170 209 251 92 98 M 190×3 17 2,1 15,1 – 191 220 240 269 2 2 0,112 0,105 

203 247 116 127 M 190×3 16 2,1 20,1 10,2 191 225 – 269 – 2 0,107 0,103 

210 266 116 122 M 190×3 19 3 23,2 – 194 230 255 286 2,2 2,5 0,102 0,111 

211 265 134 145 M 190×3 16 3 20 10,1 194 210 – 286 – 2,5 0,095 0,11 

228 289 140 146 M 190×3 24 4 27,3 – 197 245 275 303 3,2 3 0,107 0,104 

180 225 266 96 102 M 200×3 18 2,1 16,1 – 201 235 255 279 1,9 2 0,113 0,107 

220 263 118 131 M 200×3 18 2,1 20 10,1 201 220 – 279 – 2 0,103 0,106 

228 289 125 131 M 200×3 20 3 19 – 204 227 290 306 9,1 2,5 0,096 0,113 

222 284 146 159 M 200×3 18 3 20 10,1 204 220 – 306 – 2,5 0,094 0,111 

224 296 112 117 M 200×3 18 4 22,5 – 207 250 275 323 1,6 3 0,108 0,108 

190 235 285 102 108 Tr 210×4 19 2,1 15,2 – 211 250 275 299 2,9 2 0,123 0,095 

229 280 127 140 Tr 210×4 18 2,1 21 11,1 211 225 – 299 – 2 0,101 0,108 

245 305 134 140 Tr 220×4 21 3 27,3 – 214 260 307 326 – 2,5 0,108 0,104 

237 302 158 171 Tr 210×4 18 3 22 12,1 214 235 – 326 – 2,5 0,092 0,112 

200 257 310 111 117 Tr 230×4 20 3 17,2 – 233 270 295 327 3,1 2,5 0,114 0,104 

251 306 138 152 Tr 230×4 20 3 20 10,1 233 250 – 327 – 2,5 0,095 0,113 

268 333 145 151 Tr 240×4 23 4 22,3 – 237 290 315 353 3,5 3 0,114 0,097 

259 350 145 151 Tr 240×4 23 4 20,5 – 237 295 320 383 1,7 3 0,113 0,101 

220 276 329 116 123 Tr 260×4 21 3 19,2 – 253 290 315 347 1,3 2,5 0,113 0,106 

281 357 154 161 Tr 260×4 25 4 20,4 – 257 305 335 383 3,7 3 0,116 0,095 

240 305 367 128 135 Tr 280×4 23 4 19,3 – 275 325 350 385 3,4 3 0,122 0,096 

314 394 172 179 Tr 280×4 26 4 26,4 – 277 340 375 423 4,1 3 0,115 0,096 

260 328 389 131 139 Tr 300×4 24 4 21,3 – 295 350 375 405 1,8 3 0,121 0,098 

336 416 175 183 Tr 300×5 28 5 28,4 – 300 360 395 440 4,1 4 0,115 0,097 

280 352 417 145 153 Tr 320×5 26 4 20 – 315 375 405 445 1,7 3 0,123 0,095 

338 409 184 202 Tr 320×5 24 4 30,4 – 315 360 400 445 2,8 3 0,105 0,106 

362 448 192 200 Tr 320×5 30 5 30,5 – 320 390 425 480 4,9 4 0,106 0,106 

300 376 440 149 157 Tr 340×5 27 4 23,3 – 335 395 430 465 1,8 3 0,121 0,098 

372 476 209 217 Tr 340×5 31 5 26,7 – 340 410 455 520 3,9 4 0,114 0,096 

320 402 482 162 171 Tr 360×5 28 5 25,4 – 358 430 465 502 1,9 4 0,12 0,099 

405 517 225 234 Tr 360×5 33 5 25,9 – 360 445 490 560 4,2 4 0,118 0,093 

340 417 497 167 176 Tr 380×5 30 5 26,4 – 378 445 480 522 2 4 0,12 0,099 

423 537 229 238 Tr 380×5 35 5 27,9 – 380 460 510 522 3,9 4 0,117 0,094 

1) 


2) 


3) 


4) 


5) 


73




d 1 360 – 670 mm 

B 

r2 

r1 

s 1 

B 1 

D D 1 G 

d1 d2 

B 2 

G1 






360 560 135 3 000 5 200 390 900 1 200 130 C 3076 KM AOH 3076 G 

620 194 4 550 7 500 540 750 1 000 260 C 3176 KMB AOH 3176 G 

380 600 148 3 650 6 200 450 800 1 100 165 C 3080 KM AOH 3080 G 

650 200 5 000 8 650 610 700 950 310 C 3180 KMB AOH 3180 G 

400 620 150 3 800 6 400 465 850 1 200 175 C 3084 KM AOH 3084 G 

700 224 6 000 10 400 710 800 1 100 380 C 3184 KM AOH 3184 G 

420 650 157 3 750 6 400 465 800 1 100 215 C 3088 KMB AOHX 3088 G 

720 226 5 700 9 300 655 670 900 405 C 3188 KMB AOHX 3188 G 

440 680 163 4 000 7 500 510 700 950 230 C 3092 KM AOHX 3092 G 

760 240 6 800 12 000 800 600 800 480 C 3192 KM AOHX 3192 G 

760 300 8 300 14 300 950 480 630 585 C 4192 K30M AOH 24192 

460 700 165 4 050 7 800 530 670 900 245 C 3096 KM AOHX 3096 G 

790 248 6 950 12 500 830 560 750 545 C 3196 KMB AOHX 3196 G 

480 720 167 4 250 8 300 560 630 900 265 C 30/500 KM AOHX 30/500 G 

830 264 7 500 12 700 850 530 750 615 C 31/500 KM AOHX 31/500 G 

830 325 9 800 17 600 1 140 400 560 775 C 41/500 K30MB AOH 241/500 

500 780 185 5 100 9 500 640 600 800 355 C 30/530 KM AOH 30/530 

870 272 8 800 15 600 1 000 500 670 720 C 31/530 KM AOH 31/530 

530 820 195 5 600 11 000 720 600 850 415 C 30/560 KM AOHX 30/560 

920 280 9 500 17 000 1 100 530 750 855 C 31/560 KMB AOH 31/560 

570 870 200 6 300 12 200 780 500 700 460 C 30/600 KM AOHX 30/600 

980 300 10 200 18 000 1 120 430 600 990 C 31/600 KMB AOHX 31/600 

600 920 212 6 800 12 900 830 480 670 555 C 30/630 KM AOH 30/630 

1 030 315 12 200 22 000 1 370 400 560 1 180 C 31/630 KMB AOH 31/630 

630 980 230 8 150 16 300 1 000 430 600 705 C 30/670 KM AOH 30/670 

1 090 336 12 000 22 000 1 320 380 530 1 410 C 31/670 KMB AOHX 31/670 

670 1 030 236 8 800 17 300 1 060 450 630 780 C 30/710 KM AOHX 30/710 

1 030 315 10 600 21 600 1 290 400 560 1 010 C 40/710 K30M AOH 240/710 G 

1 150 345 12 700 24 000 1 430 360 480 1 600 C 31/710 KMB AOHX 31/710 


74


Page ............. 3 Page ............. 12 

C a 

da Da 

r a 

3 


factors 

d 1 d 2 D 1 B 1 

1) 

B 2 G G 1 r 1,2 

2) 

s 1 

3) 

d a d a 

3) 

D a D a 

4) 

C a r a k 1 k 2 


mm mm – 

360 431 511 170 180 Tr 400×5 31 5 27 398 460 495 542 2 4 0,12 0,1 

450 550 232 242 Tr 400×5 36 5 19 400 445 555 600 16,4 4 – 0,106 

380 458 553 183 193 Tr 420×5 33 5 30,6 418 480 525 582 2,1 4 0,121 0,099 

485 589 240 250 Tr 420×5 38 6 10,1 426 480 565 624 4,4 5 – 0,109 

400 475 570 186 196 Tr 440×5 34 5 32,6 438 510 550 602 2,2 4 0,12 0,1 

508 618 266 276 Tr 440×5 40 6 34,8 446 540 595 674 3,8 5 0,113 0,098 

420 491 587 194 205 Tr 460×5 35 6 19,7 463 490 565 627 1,7 5 – 0,105 

514 633 270 281 Tr 460×5 48 6 22 466 510 635 694 19,1 5 – 0,102 

440 539 624 202 213 Tr 480×5 37 6 33,5 486 565 605 654 2,3 5 0,114 0,108 

559 679 285 296 Tr 480×6 43 7,5 51 492 570 655 728 4,2 6 0,108 0,105 

540 670 332 355 Tr 480×5 32 7,5 46,2 492 570 655 728 5,6 6 0,111 0,097 

460 555 640 205 217 Tr 500×6 38 6 35,5 503 580 625 677 2,3 5 0,113 0,11 

583 700 295 307 Tr 500×6 45 7,5 24 512 580 705 758 20,6 6 – 0,104 

480 572 656 209 221 Tr 530×6 40 6 37,5 523 600 640 697 2,3 5 0,113 0,111 

605 738 313 325 Tr 530×6 47 7,5 75,3 532 655 705 798 – 6 0,099 0,116 

598 740 360 383 Tr 530×6 35 7,5 16,3 532 595 705 798 5,9 6 – 0,093 

500 601 704 230 242 Tr 560×6 45 6 35,7 553 635 685 757 2,5 5 0,12 0,101 

635 781 325 337 Tr 560×6 53 7,5 44,4 562 680 745 838 4,8 6 0,115 0,097 

530 660 761 240 252 Tr 600×6 45 6 45,7 583 695 740 793 2,7 5 0,116 0,106 

664 808 335 347 Tr 600×6 55 7,5 28 592 660 810 888 23,8 6 – 0,111 

570 692 805 245 259 Tr 630×6 45 6 35,9 623 725 775 847 2,7 5 0,125 0,098 

710 870 355 369 Tr 630×6 55 7,5 30 632 705 875 948 25,4 6 – 0,105 

600 717 840 258 272 Tr 670×6 46 7,5 48,1 658 755 810 892 2,9 6 0,118 0,104 

749 919 375 389 Tr 670×6 60 7,5 31 662 745 920 998 26,8 6 – 0,109 

630 775 904 280 294 Tr 710×7 50 7,5 41,1 698 820 875 952 2,9 6 0,121 0,101 

797 963 395 409 Tr 710×7 59 7,5 33 702 795 965 1 058 28 6 – 0,104 

670 807 945 286 302 Tr 750×7 50 7,5 47,3 738 850 910 1 002 3,2 6 0,119 0,104 

803 935 360 389 Tr 750×7 45 7,5 51,2 738 840 915 1 002 4,4 6 0,113 0,101 

848 1 012 405 421 Tr 750×7 60 9,5 34 750 845 1 015 1 100 28,6 8 – 0,102 

1) 


2) 


3) 


4) 


75




d 1 710 – 950 mm 

B 

r2 

r1 

s 1 

B 1 

D D 1 G 

d1 d2 

B 2 

G1 






710 1 090 250 9 000 18 000 1 100 380 530 920 C 30/750 KMB AOH 30/750 

1 220 365 16 000 30 500 1 800 320 450 1 930 C 31/750 KMB AOH 31/750 

750 1 150 258 9 150 18 600 1 120 360 480 1 060 C 30/800 KMB AOH 30/800 

1 280 375 15 600 30 500 1 760 300 400 2 170 C 31/800 KMB AOH 31/800 

800 1 220 272 11 200 24 000 1 370 320 430 1 280 C 30/850 KMB AOH 30/850 

1 360 400 16 000 32 000 1 830 280 380 2 600 C 31/850 KMB AOH 31/850 

850 1 280 280 12 700 26 500 1 530 300 400 1 400 C 30/900 KM AOH 30/900 

900 1 360 300 12 900 27 500 1 560 280 380 1 700 C 30/950 KMB AOH 30/950 

950 1 420 308 13 400 29 000 1 630 260 340 1 880 C 30/1000 KMB AOH 30/1000 

1 580 462 22 800 45 500 2 500 220 300 3 950 C 31/1000 KMB AOH 31/1000 


76


Page ............. 3 Page ............. 12 

C a 

da Da 

r a 

3 


factors 

d 1 d 2 D 1 B 1 

1) 

B 2 G G 1 r 1,2 

2) 

s 1 

3) 

d a d a 

3) 

D a D a 

4) 

C a r a k 1 k 2 


mm mm – 

710 858 993 300 316 Tr 800×7 50 7,5 25 778 855 995 1 062 21,8 6 – 0,112 

888 1 076 425 441 Tr 800×7 60 9,5 36 790 885 1 080 1 180 31,5 8 – 0,117 

750 913 1 047 308 326 Tr 850×7 50 7,5 25 828 910 1 050 1 122 22,3 6 – 0,111 

947 1 133 438 456 Tr 850×7 63 9,5 37 840 945 1 135 1 240 32,1 8 – 0,115 

800 968 1 113 325 343 Tr 900×7 53 7,5 27 878 965 1 115 1 192 24,1 6 – 0,124 

1 020 1 200 462 480 Tr 900×7 62 12 40 898 1 015 1 205 1 312 33,5 10 – 0,11 

850 1 008 1 172 335 355 Tr 950×8 55 7,5 45,8 928 1 050 1 130 1 252 3,4 6 0,124 0,1 

900 1 080 1 240 355 375 Tr 1000×8 55 7,5 30 978 1 075 1 245 1 322 26,2 6 – 0,116 

950 1 136 1 294 365 387 Tr 1060×8 57 7,5 30 1 028 1 135 1 295 1 392 26,7 6 – 0,114 

1 179 1 401 525 547 Tr 1060×8 63 12 46 1 048 1 175 1 405 1 532 38,6 10 – 0,105 

1) 


2) 


3) 


4) 


77

Other associated SKF products 

Self-aligning ball 


Self-aligning ball bearings as locating 

bearings are excellent partners for nonlocating 

CARB toroidal roller bearings 

in self-aligning bearing systems if loads 

are light and speeds relatively high. 

Self-aligning ball bearings were 

invented in 1907 by Sven Wingquist 

and SKF was founded to manufacture 

them. They are the low-friction bearings 

among rolling bearings and are still the 

optimum choice for many applications, 

even today. The SKF range covers all 

the usual dimension series and sizes 

for shafts from 5 to 120 mm in diameter. 

Most sizes are available with 

a tapered bore as well as a cylindrical 

bore and can therefore be mounted on 

the shaft in a variety of ways. 

Spherical roller bearings 

Spherical roller bearings are used in 

widely differing branches of industry 

as the locating bearing in self-aligning 

arrangements when loads are heavy 

and speeds moderate. They are used 

successfully, e.g. in paper machines, 

for the roller beds of continuous casting 

plant as well as in ventilators and 

fans. 

Spherical roller bearings are core 

products for SKF, as are self-aligning 

ball bearings, and were invented in 

1919 by Arvid Palmgren and further 

developed in three stages by SKF. 

Today, the range produced by SKF 

comprises bearings in twelve series in 

the bore diameter range 20 to 2 300 

mm. All are available with cylindrical 

and tapered bores and some sizes are 

available in a sealed version. 

78 

Accessories 

Lock nuts 

Lock nuts (also referred to as shaft 

nuts) are mostly used to axially locate 

bearings at shaft ends and are produced 

by SKF in several designs. The 

KM, KML and HM nuts have four or 

eight slots equally spaced around the 

circumference and they are secured 

by locking washers or locking clips, 

which engage a groove in the shaft. 

KMFE lock nuts with locking screw 

were specially developed for use with 

CARB bearings and sealed spherical 

roller bearings and have dimensions 

appropriate to these bearings. They 

can therefore be mounted immediately 

adjacent to the bearings without 

impeding axial displacement within the 

bearing. A holding groove in the shaft 

is not needed. 

KMT precision lock nuts and KMK 

nuts with locking pin that do not 

require a groove in the shaft are also 

available. 

Adapter and withdrawal sleeves 

Adapter and withdrawal sleeves are 

used above all for bearing arrangements 

which have to be repeatedly 

mounted and dismounted. Bearings 

with tapered bore can be mounted on 

smooth shafts as well as stepped 

shafts. They facilitate bearing mounting 

and dismounting and often simplify 

bearing arrangement design. 

Adapter sleeves 

Adapter sleeves are the more popular 

as they enable bearings to be mounted 

on smooth shafts as well as stepped 

shafts. When using adapter sleeves on 

smooth shafts it is possible to locate 

the bearing at any position on the 

shaft. When used on stepped shafts 

together with a spacer ring, exact axial 

positioning of the bearing can be 

achieved and bearing dismounting is 

facilitated. 

SKF adapter sleeves are slotted and 

are supplied complete with lock nut 

and locking device. 

Withdrawal sleeves 

Withdrawal sleeves can be used to 

mount bearings with tapered bore on 

cylindrical seatings of stepped shafts. 

The sleeve is pressed into the bore 

of the bearing, which abuts a shaft 

shoulder or similar fixed component. 

SKF withdrawal and adapter sleeves 

SKF lock nuts

The sleeve is located on the shaft by 

a nut or an end plate. SKF withdrawal 

sleeves are slotted and have an external 

taper of 1:12 or 1:30.The nuts 

required for mounting and dismounting 

the withdrawal sleeve are not supplied 

with the sleeve and must be ordered 

separately 

Bearing housings 

Standard bearing housings together 

with rolling bearings provide economic 

bearing arrangements that require little 

maintenance. This is also true of 

CARB toroidal roller bearings. Mounted 

in standard housings the bearings are 

supported firmly and evenly around 

their circumference and across the 

whole raceway width. They are also 

protected against damp and solid 

contaminants. 

SKF produces a wide variety of 

bearing housings to meet different 

application demands. Most are of grey 

cast iron, but housings of spheroidal 

graphite cast iron or cast steel can 

also be produced. 

To meet the needs of bearing 

applications, for example in paper 

machines, housings to fit the CARB 

bearings used at the non-drive side 

are available. These housings can be 

bolted to the bed as the thermal 

changes in cylinder length can be 

accommodated in the CARB toroidal 

roller bearing itself. 

See also SKF catalogues 

– “Bearing accessories” 

– “Bearing housings” 

and SKF brochures 

– 4403 “SNL plummer block 

housings solve the housing 

problems” 

– 4410 “The CARB bearing – 

a better solution for the front 

side of drying cylinders” 

– 5100 “SKF spherical roller 

bearings – setting a new 

standard for performance 

and reliability” 

– 5101 “SNL 30 and SNL 31 

plummer block housings solve 

the housing problems” 

or the 

– “SKF Interactive Engineering 

Catalogue” on CD-ROM or 

online at www.skf.com 

79

Lubricants and 

lubrication equipment 

CARB toroidal roller bearings operate 

under the most varying loads, speeds, 

temperature and environmental conditions. 

They require the type of highquality 

lubricating greases, which SKF 

provides. 

SKF greases have been specially 

developed for rolling bearings in their 

typical applications. The SKF range 

includes fifteen environmentally friendly 

greases and covers practically all 

application requirements. 

The range is complemented by a 

selection of lubrication accessories 

including 

Products for mounting 

and dismounting 

Like all rolling bearings, CARB toroidal 

roller bearings require a high degree of 

skill when mounting or dismounting, as 

well as the correct tools and methods. 

The comprehensive SKF range of 

tools and equipment includes everything 

that is required: 

• mechanical tools, 

• heaters, 

• hydraulic tools and equipment, 

• pullers and withdrawal tools for all 

sizes of bearings. 

• automatic lubricators, 

• grease guns, 

• lubricant metering devices and 

• a wide range of manually and pneumatically 

operated grease pumps. 

Induction heater, hydraulic pumps, 

hydraulic nut, mounting fluid and 

anti-fretting paste from SKF 

See also catalogue MP3000 

“SKF Maintenance and Lubrication 

Products” or online at 

www.mapro.skf.com 

80 

SKF lubricants: 

always the best choice 

for any kind of bearing 

application

Condition monitoring 

equipment 

The goal of condition monitoring is to 

maximise the time that the machine is 

functioning well and minimize the 

number of breakdowns, thereby significantly 

reducing operating downtime 

and maintenance costs. 

To achieve this, it is recommended 

that the bearing and machine condition 

be monitored either periodically or continuously. 

Condition monitoring enables 

incipient bearing damage to be detected 

and evaluated, so that bearing 

replacement can be scheduled for a 

time when the machine is not in operation, 

to avoid unplanned stoppages. 

Applied to all machinery (not just sensitive 

or problematic machines), condition 

monitoring improves machinery 

operation to an optimum level, often 

exceeding the original equipment 

specifications. 

SKF provides a comprehensive 

range of condition monitoring equipment 

to measure all important parameters. 

These include 

• temperature, 

• speed, 

• noise, 

• oil condition, 

• shaft alignment, 

• vibration and 

• bearing condition. 

The range includes lightweight, handheld 

devices for manual use as well as 

complex continuous monitoring systems 

for fixed installations in connection 

with preventive maintenance. 

One example is the Machine 

Reliability Inspection System MARLIN, 

which is at the leading edge of technology 

and allows storage of up to 2 000 

measuring points. It can be used to 

diagnose machines and individual 

bearings and is backed by tailored 

software for the evaluation of the readings 

including enveloping vibration 

acceleration curves. 

Recording vibration values using an 

SKF Microlog data collection unit 

Taking the temperature 

Noise testing 

The MARLIN machine reliability 

inspection system 

81

SKF – The knowledge 

engineering company 

The business of the SKF Group consists 

of the design, manufacture and 

marketing of the world’s leading brand 

of rolling bearings, with a global leadership 

position in complementary products 

such as radial seals. SKF also 

holds an increasingly important position 

in the market for linear motion 

products, high precision aerospace 

bearings, machine tool spindles, as 

well as plant maintenance services 

and is an established producer of 

high-quality bearing steel. 

The SKF Group maintains specialized 

businesses to meet the needs of 

the global marketplace. SKF supports 

specific market segments with ongoing 

research and development efforts that 

have led to a growing number of innovations, 

new standards and new 

products. 

SKF Group has global ISO 14001 

environmental certification. Individual 

divisions have been approved for 

quality certification in accordance 

with either ISO 9000 or appropriate 

industry specific standards. 

Some 80 manufacturing sites worldwide 

and sales companies in 70 countries 

make SKF a truly international 

corporation. In addition, our 7 000 

distributor and dealer partners around 

the world, e-business marketplace and 

global distribution system put SKF 

close to customers for the supply of 

both products and services. In essence, 

SKF solutions are available wherever 

and whenever our customers need 

them. 

Overall, the SKF brand now stands 

for more than ever before. It stands for 

the knowledge engineering company 

ready to serve you with world-class 

product competences, intellectual 

resources and the vision to help you 

succeed. 

Harnessing wind power 

The growing industry of wind-generated 

electric power provides an environmentally 

compatible source of electricity. SKF is 

working closely with global industry leaders 

to develop efficient and trouble-free 

turbines, using SKF knowledge to provide 

highly specialized bearings and condition 

monitoring systems to extend equipment 

life in the extreme and often remote environments 

of wind farms. 

Delivering asset efficiency 

optimization 

To optimize efficiency and boost productivity, 

many industrial facilities outsource 

some or all of their maintenance services 

to SKF, often with guaranteed performance 

contracts. Through the specialized 

capabilities and knowledge available from 

Developing a cleaner cleaner 

The electric motor and its bearings are the 

heart of many household appliances. SKF 

works closely with appliance manufacturers 

to improve their product performance, 

cut costs and reduce weight. A recent 

example produced a new generation of 

vacuum cleaners with substantially more 

suction. SKF’s knowledge in small bearing 

technology is also applied to manufacturers 

of power tools and office equipment. 

SKF Reliability Systems, SKF provides 

a comprehensive range of asset efficiency 

services, from maintenance strategies and 

engineering assistance, to operator-driven 

reliability and machine maintenance 

programs. 

82

Creating a new “cold remedy” 

In the frigid winters of northern China, 

sub-zero temperatures can cause rail car 

wheel assemblies and their bearings to 

seize due to lubrication starvation. SKF 

created a new family of synthetic lubricants 

formulated to retain their lubrication 

viscosity even at these extreme bearing 

temperatures. SKF’s knowledge of lubricants 

and friction are unmatched 

throughout the world. 

Evolving by-wire technology 

SKF has unique expertise and knowledge 

in fast growing by-wire technology, from 

fly-by-wire, to drive-by-wire, to work-bywire. 

SKF pioneered practical fly-by-wire 

technology and is a close working partner 

with all aerospace industry leaders. 

As an example, virtually all aircraft of the 

Airbus design use SKF by-wire systems 

for cockpit flight control. SKF is also 

a leader in automotive drive-by-wire, 

having jointly developed the revolutionary 

Filo and Novanta concept cars which 

employ SKF mechatronics for steering 

and braking. Further by-wire development 

has led SKF to produce an allelectric 

forklift truck which uses mechatronics 

rather than hydraulics for all 

controls. 

Planning for sustainable growth 

By their very nature, bearings make a positive 

contribution to the natural environment. 

Reduced friction enables machinery to 

operate more efficiently, consume less 

power and require less lubrication. SKF is 

continually raising the performance bar, 

enabling new generations of high-efficiency 

products and equipment. With an eye to 

the future, SKF’s global policies and manufacturing 

techniques are planned and 

implemented to help protect and preserve 

the earth’s limited natural resources. We 

remain committed to sustainable, environmentally 

responsible growth. 

Maintaining a 320 km/h R&D lab 

In addition to SKF’s renowned research 

and development facilities in Europe and 

the United States, Formula One car racing 

provides a unique environment for SKF to 

push the limits of bearing technology. For 

over 50 years, SKF products, engineering 

and knowledge have helped make 

Scuderia Ferrari a formidable force in F1 

racing. (The average racing Ferrari utilizes 

more than 150 SKF components.) Lessons 

learned here are applied to the products 

we provide to automakers and the aftermarket 

worldwide. 

83

R 

® SKF, CARB and SensorMount are 

registered trademarks of the SKF Group. 

MARLIN is a trademark of the 

SKF Group. 

© Copyright SKF 2004 

The contents of this publication are the 

copyright of the publisher and may not 

be reproduced (even extracts) unless 

permission is granted. Every care has 

been taken to ensure the accuracy of 

the information contained in this publication 

but no liability can be accepted 

for any loss or damage whether direct, 

indirect or consequential arising out of 

the use of the information contained 

herein. 

Publication 5102 E · January 2004 

Printed in Denmark on environmentally 

friendly, chlorine-free paper (Multiart 

Silk) by Scanprint as. 

www.skf.com

CARBÂ® toroidal roller bearings â a revolutionary ... - Acorn Bearings

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?

CARBÂ® toroidal roller bearings â a revolutionary ... - Acorn Bearings