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Мотор-редукторы серии BS Benzlers
1. Series BS Compact Worm Gear
Technical
Up to - 4kW / 315 Nm
Worm Gearbox
CBS-2.00GB1211
2. We can create custom engineered transmission solutions of any size and configuration.
Serving an entire spectrum of mechanical drive applications from food, energy, mining and metal; to automotive,
aerospace and marine propulsion, we are here to make a positive difference to the supply of drive solutions.
We offer a wide range of repair services and many years experience of repairing
demanding and highly critical transmissions in numerous industries.
Series X
Cone Ring
Pin and bush
elastomer coupling
Series X
Torque Limiter
Overload protection
device
Series J
Shaft mounted
helical speed
reducers
Series C
Right angle drive
helical worm geared
motors & reducers
Series BD
Screwjack worm
gear unit
Series G
Helical parallel shaft
& bevel helical right
angle drive gear
units
Series X
Grid
Double flexing steel
grid coupling
Series M
In-line helical geared
motors & reducers
Series H
Large helical parallel
shaft & bevel helical
right angle drive units
Roloid Gear Pump
Lubrication and fluid
transportation pump
Series BS
Worm gear unit
Series X
Nylicon
Gear coupling with
nylon sleeve
Series A
Worm Gear units
and geared motors
in single & double
reduction types
Series X
Gear
Torsionally rigid,
high torque coupling
Series K
Right angle helical
bevel helical geared
motors & reducers
Series F
Parallel angle helical
bevel helical geared
motors & reducers
PRODUCTS IN THE RANGE
3. Total compliance with the ATEX Directive safeguarding the use of
industrial equipment in potentially explosive atmospheres is
assured for users of our geared products.
equipment group/category.
suppliers of electrical and non-electrical equipment for use in
2 or 3 for surface industries in designated hazardous location
22 for dusts.
ATEX
Compliance Assured
5. ii
SERIES BS
Technical information ___________________________________________________________ 2
Selection of worm gears and worm geared motors ____________________________________ 3
Mounting positions _____________________________________________________________ 8
Worm Geared Motors
Power ratings - Output speeds ___________________________________________________ 9 - 18
Dimensions __________________________________________________________________ 19 - 30
Worm Gears
Power ratings - Output speeds ___________________________________________________ 31 - 37
Dimensions __________________________________________________________________ 38 - 47
_____________________________________________ 48 - 49
Mounting ____________________________________________________________________ 51
Questionnaire ________________________________________________________________ 52
CONTENTS
6. 1
SERIES BS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BS 40-71
THE PROGRAMME
Single input shaft
BS 40-71
Output shaft
BS 40-71
Feet
BS 40-71
BS 40-71
Double input shaft
BS 40-71
Hollow shaft
BS 40-71
r
BS 40-71
Feet
BS 40-71
Bolt the gear to a
wall or foundation
BS 40-71
Double worm gear
BS 40-71
Single input shaft
BS 40-71
Hollow shaft
BS 40-71
Horizontal
BS 40-71
BS 40-71
Double worm gear
7. 2
SERIES BS
TECHNICAL INFORMATION
Benzler worm gears BS 40-71 have a symmetrical
gear-housing manufactured in aluminium. BS 88 and
112 have a gearhousing of cast-iron.
The worm wheel is made of centrifugal cast tinbronze
and the worm screw is case-hardened and ground.
All motor connections are according to IEC-standard
and for BS 40-112 with elastic coupling. This means
the following advantages:
bearings and are not connected with the motor
bearings. This means longer lifetime and a
smoother drive..
40-112.
the gear..
The worm geared motor is available for mounting on
any position.
The gear can be combined with Benzlers’ remaining
range of helical and worm gears to provide very low
output speeds. All data given in this catalogue applies
aluminium and are available in B5 and B14, larger
Feet
Output shaft
Single or double output shaft can be mounted into
has as standard execution, a single output shaft or a
hollow shaft.
gear. The BS 40-71 gear casing can also be mounted
onto a wall or foundation and bolted through the 4
bolt holes in the gear casing.
Torque arm bracket
The hollow shaft gearboxes can be supplied with
BS 88/112 have fan as an option.
BS40-71 is normally delivered without painting. BS
40-71 can be delivered according to environmental
BS88-112 is normally delivered with standardpaint,
(RAL5015).
8. 3
SERIES BS
apply to service factor 1.0. Service factor for geared
motors can be found after the output speeds. Service
factor 1.0 is valid for continous operation 8 hours/
The inertia of the driven machine is less than 20% of
exceed 1.8 times the gear rating at service factor 1.0.
T2b ratio (i) or output speed (n2).
2. Based on type of load/driven machine, operating
hours/day and number of starts/hour, select
service factor fb (page 6-7).
3. Calculate T2 2b x fb.
4. Choose gear on page 40-47 according to
following: T2 2b x fb
speed (n2).
For example BS40 ratio 6,67:1, code A
5. Calculate P1 e x fb x 1
For example P1
6. Choose a worm gear motor on pages 12-24.
For example BS40A with a motor size 80A4.
1.8 times the gear rating at service factor 1.0.
T2max 2 x 1,8
exceeded.
ratings are not exceeded.
SELECTION OF GEARS AND GEARMOTORS
10. For conditions other than above described, for
instance extreme environments, high inertia
systems or other, please contact our application
engineers
Formulas:
T2b
Pe x 9550
n2
T2 2b x fb
P1 e x fb x 1
Pm 1
T2max 2
Je, red e x ( n2
)
2
2
)
n1
T2
40-47)
T2b
T2max
P1
Pe
Pm
n1
n2
fb
Je, red
2
Je
2
Jm
2
Load
Description Moment of inertia Example
I
Je, red m
Uniform loaded conveyors and elevators. Centrifugal
I a
Je, red m
variations in load
Larger conveyors. Reciprocating pumps with 3 or more
cylinders. Agitators and mixers for media with high
viscosity and/or solid particles.
II
Je, red m
load
Larger conveyors. Reciprocating pumps with 3 or more
cylinders. Agitators and mixers for media with high
viscosity and/or solid particles
III
Je, red m
masses to be accelerated
Heavy agitators and mixers. Reciprocating pumps with
1 or 2 cylinders. Crushers, mills and presses. Vibrators
9. 4
SERIES BS
Service factors
Table 1. Service factor fb
Daily operations in hours 4 hours 8 hours 16 hours 24 hours
Starts per hour <10 10-200 >200 <10 10-200 >200 <10 10-200 >200 <10 10-200 >200
I 0.8 0.9 1.0 0.9 1.0 1.1 1.1 1.2 1.3 1.3 1.4 1.5
Ia 1.1 1.2 1.3 1.1 1.3 1.5 1.3 1.5 1.6 1.4 1.6 1.8
II 1.3 1.4 1.6 1.3 1.6 1.8 1.4 1.7 1.9 1.5 1.8 2.0
III 1.5 1.6 1.8 1.6 1.8 2.0 1.7 1.9 2.1 1.8 2.0 2.2
Table 2. Ambient temperature factor ft
For other ambient temperatures then 20° C, always multiply the thermal rating with the following factors.
°C Celsius -40 -30 -20 -10 +/- 0 10 20 30 40 50
ft 1.80 1.67 1.53 1.40 1.27 1.13 1.00 0.87 0.73 0.60
Table 3. Fan factor ff
thermal rating with the following
factors.
Input speed n1 (rpm) 10 100 300 750 1000 1500 3000
ff 1 0.95 0.74 0.63 0.65 0.69 0.77
The forces allowed on the gear shafts are determined by bearing life and strength on gear shafts and housing. Radial forces at
no thrust loads.In the power ratings page 12-24 max. allowed radial force on output shaft is given for each output speed. The
value is only valid if the force is applied at the centre of the output shaft.If the force is applied at another position the allowed
radial force is given by the following:
Radial Forces
Bearing life: Fr,x
a Fr2
(f + x)
Strength on shaft Fr,x
c Fr2
x
Strength on gear housing: Fr,x
d Fr2max
(g + x)
Fr,x
Fr2
Fr2max
Type/Size a c d f g Fr2max
40 90.5 18 101.5 72.5 83.5 2 000
50 96.5 21 110.0 75.5 89.0 2 700
63 107.0 29 122.0 78.0 93.0 4 000
71 127.5 29 142.5 98.5 113.5 5 000
88 152.5 41 181.0 111.5 140.0 10 000
112 175.0 41 210.5 134.0 169.5 15 000
c
x
Fr,x
Fr
SELECTION OF GEARS AND GEARMOTORS
10. 5
SERIES BS
load in middle of the shaft may not exceed values
shown in tables below. For calculation of minimum
permissible diameter the following formula should be
used.
Dmin
2000 x T2b x fe x fb mm
Fr2
T2b
T2b
Pe x 9 550
n2
Pe
n2
Fr2
fb
fe
Dmin
Gear Ratio
Fr1 A B C D E F Fx G H I J K L M
BS 40 180 135 100 95 80 70 - 50 45 45 40 30 - -
50 215 190 155 115 100 80 70 65 55 55 40 - - -
63 385 305 255 210 165 155 125 115 100 100 75 45 - -
71 400 350 285 240 180 150 - 115 100 100 60 45 - -
88 925 635 470 405 335 305 - 235 200 200 190 145 100 65
112 1375 930 740 580 505 425 - 340 295 295 255 160 125 105
Gear Ratio
A B C D E F Fx G H I J K L M
40 2000 2000 2000 2000 2000 2000 - 2000 2000 2000 2000 2000 - -
50 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 2500 - - -
63 3500 3500 3500 3500 3500 3500 3500 3500 3500 3500 3500 3500 - -
71 4500 4500 4500 4500 4500 4500 - 4500 4500 4500 4500 4500 - -
88 7800 10000 10000 10000 10000 10000 - 10000 10000 - 10000 10000 10000 10000
112 10400 14700 15000 15000 15000 15000 - 15000 15000 - 15000 15000 15000 15000
output shaft of the gear can not continue to drive the gear
when the motor has been stopped.
shaft of the gear can not start a movement.
the gear.
normally the best selection.
gears are given on the following page.
Total reversing
12° - 25° Statically reversible
8° - 12°
Dynamically reversible
5° - 8° Return in case of vibrations
Scant dynamic reversing
3°- 5° Slow movement return in case of
vibrations. Low dynamic reversing
1°- 3°
SELECTION OF GEARS AND GEARMOTORS
11. 6
SERIES BS
i z m
B S
4 0
6.67 A 15.52 3 2.5 60 86
10 B 16.70 3 2 62 85
15 C 11.31 2 2 53 79
20 D 8.53 1 3 47 75
24 E 7.13 1 2.5 43 71
30 F 5.71 1 2 37 67
40 G 4.02 1 1.45 30 59
48 H 3.58 1 1.25 27 56
60 I 2.86 1 1 23 49
70 J 3.03 1 0.9 24 44
84 K 2.53 1 0.75 21 36
BS
5 0
8 A 17.82 3 3 63 88
10.5 B 15.07 2 3.5 60 87
14 C 12.19 2 2.7 55 84
21 D 7.67 1 3.5 44 77
24 E 7.07 1 3 39 74
32 F 5.71 1 2.4 37 71
37 FX 4.40 1 2 32 66
42 G 4.29 1 1.8 31 65
54 H 3 34 1 1.4 26 59
64 I 2.99 1 1.2 24 55
80 J 2.86 1 1 23 49
B S
6 3
7.75 A 18.43 4 3 64 90
11 B 17.82 3 3 63 88
14 C 15.07 2 3.5 60 87
18 D 10.20 2 2.7 51 83
24.5 E 9 93 2 2.1 50 81
29 F 7.67 1 3 5 44 77
37 FX 4 47 1 2.5 32 70
43 G 5 71 1 2.4 37 71
51 H 4.76 1 2 33 67
57 I 4.29 1 1.8 31 65
73 J 3.34 1 1.4 26 59
104 K 2.60 1 1 22 46
i z m
B S
71
7.5 A 18.29 4 3.5 64 92
9.33 B 19.98 3 4 65 91
12 C 14.04 3 3 58 88
16 D 12.34 2 3.5 55 87
21 E 10.20 2 2.7 51 84
28 F 6.91 1 4 42 79
37 G 6.12 1 3 39 76
48 H 4.73 1 2.4 33 71
63 1 3.55 1 1.8 27 65
82 J 2.86 1 1.4 23 58
100 K 2.99 1 1.2 24 54
B S
8 8
7.25 A 21.80 4 4.5 67 94
11.75 B 18.43 4 3 64 91
15.67 C 14.04 3 3 58 89
19.50 D 9.93 2 3.5 50 87
23.50 E 9.46 2 3 49 85
29 F 5.71 1 4.5 38 80
39 G 5.00 1 3.5 34 77
47 H 4.76 1 3 33 75
58 J 4.47 1 2.5 32 72
71 K 3.37 1 2 26 67
82 L 3.55 1 1.8 27 66
106 M 2.86 1 1.4 23 57
B S
112
7 A 22.48 4 6 68 94
11.5 B 20.85 4 4 66 93
15.3 C 15.95 3 4 61 91
19.5 D 11.31 2 4.5 54 88
23 E 10.78 2 4 52 88
28 F 5.91 1 6 39 83
39 G 5.71 1 4.5 38 80
46 H 5.44 1 4 36 79
63 J 4.76 1 3 33 75
76 K 4.21 1 2.5 31 71
95 L 3.37 1 2 26 66
108 M 2 95 1 1.75 24 61
a worm gear or a worm geared motor is chosen. For
intermittent duties it is necessary to increase the
motor power to be able to compensate for the low ef-
after run-in period and under continuous duty.
All values given in the catalogue are only valid for a
gear after running-in period under continuous duty
with service factor 1.
- 1
n1, max 40 50 63 71 88 112i<60:1 112i>60:1
rpm 6000 5500 5000 4500 4000 3000 3500
SELECTION OF GEARS AND GEARMOTORS
12. 7
SERIES BS
QUESTIONAIRE
e at nmax at nmin Motor
Enclosure IP
Output speed (RPM): nemax nemin
e at nmax at nmin
r2e at output shaft at input shaft
Ambient factors
Ambient temperature (°C)
a2e at output shaft at input shaft
(away + / towards -) Load cycle / Duty cycle S / % ED
2
): at output shaft at input shaft
Unit type and mounting position (see page 11)
Gears and geared motors are described by a code consisting of 10 positions. Positions that aren’t used are left empty.
Additional information is written clearly.
Output speed, Motor power
All nonstandard executions that are not described in this catalogue.
Gear Motor
1 2 3 4 5 6 7 8 9 10
Additional information:
13. 8
SERIES BS
Hollow shaft
gear
Execution - code 0
Feet and output
shaft
Execution - code 1
Only output
shaft
Execution - code 8
Only feet
Execution - code 9
Code 9 only
for BS40-71
U O H-A H-B
OV OH OD
UV UH UD
VV
Endast
BS 40-71
VH
Endast
BS 40-71
VD
Endast
BS 40-71
HU-A HD-A
HU-B HD-B
and shaft
Execution - code 2*
State M
BS 40-71
OH
BS 40-71
OV
BS 88-112
OH
and hollow shaft
Execution - code 3*
State M
BS 40-71
OH
BS 40-71
OV
BS 88-112
OH
Double gears
(prestep gear is
shown on picture)
Execution - code 4
P1 P2 P3
P4 P5 P6
P7 P8
Gear with hollow
and connection
Execution - code 5
O V
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
BENZLERS
Standard sizes 40, 50, 63, 71, 88, 112,
50/40, 63/40, 71/40, 88/50, 112/63
Other combinations and sizes can be achieved.
3 Ratio code
A, B, C....FA, FB, FC (2 letters for double
wormgears).
5 Gear Accessories
motor)
diametres or IEC-standard size)
7 Motor
Acc. to IEC (71A, 71B)
8 Accessories for the motor
Positions acc picture
Position of terminal box
63 71 80 90 100 112 132 160 180
Gear
BS 40 45* 45* 45* 45*
50 0 0 0
63 0 0 0
71 45+ 45+ 45+ 45+
88 45 45 45 45 90
112(i<60) 45 45 90 45
112(i>60) 45 45 45 90
63 71 80 90 100 112 132 160 180
Gear
40 45* 45* 45* 45*
50 45* 45* 45*
63 45* 45* 45* 45
71 0+ 0+ 0+ 0+
88 0 0 0 0
112 0 0 0
Position of terminal box
0°180°
270°
90°
135°
45
225°
315°
MOUNTING POSITIONS
54. 49
SERIES BS
WORM GEAR
(SS 2333)
The coating is a recently developed surface coating method
for aluminium.
The coating means that the material surface is, by a
chemical process, converted into an aluminium oxide,
which gives a very hard, ceramic, surface finish.
The oxide layer is then impregnated and coated with
connection between oxide and plastic is created.
Gear BS 40 BS 50 BS 63 BS 71
max
min
78
31
120
62
197
92
315
143
Output speed, rpm max
min
429
9
358
9
369
7
381
7
93 150 250 400
2000 2700 4000 5000
2000 2500 3500 4500
56. 51
SERIES BS
1. The gear should be placed on a flat and solid foundation.
mounted with force. This will damage the gear.
3. To avoid increasing load on shafts and bearings, the
gear and the driven machine should be carefully aligned,
even if an elastic coupling is used.
direction of pull should be such that the gear housing
willbe pressed towards the foundation.
conditions as heat, dust or damp, the gear must be
provided with sufficient protection, but the cooling air
circulation must not be unduly restricted.
Before delivery BS40-112 are filled with synthetic oil - Mobil
SHC 634. This type of lubrication is extra suitable for worm
gears.
MOUNTING
1. The gear is normally mounted on a shaft with tolerance
js6. The hollow shaft have tolerance H7.
the gear is mounted. The gear shall not be mounted with
force.
screws in hollow shaft can be used for BS88 and 112.
1. Benzler worm gears are lubricated for life with synthetic
oil/grease and are therefore maintenance free.
1.The gear should be run under low load conditions during
the first 10-30 hours. Then the load should gradually be
increased to full load.
2.The length of the running-in period depends on the size of
can exceed the ambient temperature by 60-70° C. Oil-
and geartemperatures of 95-100° C are harmless and
temperature exceeds 100° C special sealrings must be
used.
4. Gears which are not used for a long period should be
run for short periods, approximately every third month.
At normal condition the oil/grease never needs to be
changed.
Ambient temperature -30°C - +30°C.
3. The worm gears shall under no circumstances be
entirely filled with oil or grease.
57. 52
SERIES BS
QUESTIONAIRE
e at nmax at nmin Motor
Enclosure IP
Output speed (RPM): nemax nemin
e at nmax at nmin
r2e at output shaft at input shaft
Ambient factors
Ambient temperature (°C)
a2e at output shaft at input shaft
(away + / towards -) Load cycle / Duty cycle S / % ED
2
): at output shaft at input shaft
Unit type and mounting position (see page 11)
Additional information:
58. 53
SERIES BS
IMPORTANT
- The following information is important in ensuring safety. It must be brought to the attention of personnel involved in the selection
installation, use and maintenance.
- these are not necessarily listed in any order of severity as the degree of danger varies in individual circumstances. It is
important therefore that the list is studied in its entirety:-
1) Fire/Explosion
handled with rubber gloves.
2) Guards - Rotating shafts and couplings must be guarded to eliminate the possibility of physical contact or entanglement of clothing. It
exposure. Ear defenders should be provided for personnel in these circumstances. Reference should be made to the Department of
Employment Code of Practice for reducing exposure of employed persons to noise.
or general arrangement drawing for lifting point positions). Failure to use the lifting points provided may result in personal injury and/or
5) Lubricants and Lubrication
lubricants.
plate and in the installation and maintenance literature. Heed all warning tags. Failure to do so could result in mechanical damage and
7) Installation, Maintenance and Storage
from extremes of temperature and humidity to prevent deterioration.
The rotating components (gears and shafts) must be turned a few revolutions once a month (to prevent bearings brinelling).
preservative. Gloves should be worn when removing these materials. The former can be removed manually, the latter using white spirit
as a solvent.
(e) Ensure the proper maintenance of gearboxes in operation. Use only the correct tools and our approved spare parts for repair and
8) Hot Surfaces and Lubricants
9) Selection and Design
endanger personnel or result in damage.
satisfactorily, avoiding system critical speeds, system torsional vibration, etc.
was designed.
(d) As improvements in design are being made continually the contents of this catalogue are not to be regarded as binding in detail, and
drawings and capacities are subject to alterations without notice.
units.
PRODUCT SAFETY
59. www.benzlers.com
www.radicon.com
AUSTRALIA
Radicon Transmission
(Australia) PTY Ltd
Australia
Tel: +61 421 822 315
EUROPE
Benzler TBA BV
Jachthavenweg 2
NL-5928 NT Venlo
Austria
Tel: +43 7 229 618 91
Fax: +43 7 229 618 84
Germany
Tel: 0800 350 40 00
Fax: 0800 350 40 01
Italy
Tel: +39 02 824 3511
Netherlands & the rest of Europe
Tel: +31 77 324 59 00
Fax: +31 77 324 59 01
DENMARK
Benzler Transmission A/S
Dalager 1
DK-2605 Brøndby,
Denmark
Tel: +45 36 34 03 00
Fax: +45 36 77 02 42
FINLAND
Oy Benzler AB
Vanha Talvitie 3C
FI-00580 Helsingfors,
Finland
Tel: +358 9 340 1716
Fax: +358 10 296 2072
INDIA
Elecon. Engineering
Company Ltd.
Anand Sojitra Road
Vallabh Vidyanagar
388120 Gujarat
India
Tel: +91 2692 236513
Fax: +91 2692 227484
SWEDEN & NORWAY
AB Benzlers
Porfyrgatan
254 68 Helsingborg
Sweden
Tel: +46 42 18 68 00
Fax: +46 42 21 88 03
THAILAND
Radicon Transmission
(Thailand) Ltd
700/43 Moo 6
Amata Nakorn Industrial Estate
Tumbol Klongtumru
Muang,
Chonburi
20000
Thailand
Tel: +66 3845 9044
Fax: +66 3821 3655
UNITED KINGDOM
Radicon Transmission UK Ltd
Unit J3
Lowfields Business Park,
Lowfields Way, Elland
West Yorkshire, HX5 9DA
Tel: +44 1484 465 800
Fax: +44 1484 465 801
USA
Radicon USA Transmission Ltd
1599 Lunt Avenue
Elk Grove Village
Chicago
Illinois
60007
USA
Tel: +1 847 593 9910
Fax: +1 847 593 9950
CONTACT US
60. Benzlers
Denmark +45 36 340300
Finland +358 9 3401716
Germany +49 800 3504000
Italy +39 02 824 3511
Sweden +46 42 186800
The Netherlands +31 77 3245900
www.benzlers.com
Radicon
Thailand +66 38459044
United Kingdom +44 1484 465800
USA +1 847 5939910
www.radicon.com