ROSTA Motorbases. Self-tensioning Motor Mounts for all Friction Belt Drives slippage-free belt protecting maintenance-free ROSTA

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1 Motorbases Self-tensioning Motor Mounts for all Friction Belt Drives slippage-free belt protecting maintenance-free

2 Customer Benefits of the Rosta Mo MB 7 Offers short-term slippage by the start-up of large inertias, avoiding excessive tension on belt-carcass! Offers fast belt changing, no need of complex readjustment of the pulleys! MB 38 Fully maintenance-free tensioning system, no need of periodical compensation of belt elongation!

3 torbases in Friction Belt Drives Prevents from slack accruement, avoids heat generating slippage of the belts and averts from premature belt failure! MB 50 Offers ideal belt tension, constant transmission of nominal torque, less energy consumption, can lead to threefold belt lifetime! MB 70 Noiseless power transmission, all time ideally tightened belt sets! MB 00 3

Selection table of Rosta-Motorbases according to the motor frame sizes IEC NEMA Motor Frame Size P [kw] 000 min 6-pole motor P [kw] 500 min

..5 43T 45T 0.75.5 / 00L.5. / 3 8T.5 3 MB 7 0 Pages 6 7 MB 7 M. 4 84T 5 3S 3M 60M 60L 3 4 / 5.5 7.5 5.5 7.5 5 3T 5T 54T 56T 3 5 7.5 0 7.

5 / 30 84T 86T 34T 36T 5 0 5 30 5 30 40 50 MB 50 70- MB 50 400 Pages 8 9 MB 50 5S 5M 30 37 45 364T 365T 40 50 60 75 MB 50 500 50M 37 55 404T 60

60 3 60 60 00 447T 449T 50 00 00 300 00 50 50 300 MB 70 800 35M 35L 90 / 0 0 60 3 60 60 00 447T 449T 50 00 00 300 00 50 50 300 355S 355M 355L 3

4 Selection table of Rosta-Motorbases according to the motor frame sizes IEC NEMA Motor Frame Size P [kw] 000 min 6-pole motor P [kw] 500 min 4-pole motor Motor Frame Size P [HP] 00 min 6-pole motor P [HP] 800 min 4-pole motor Type of Motorbase Details Standard Design 90S 90L T 45T / 00L.5. / 3 8T.5 3 MB 7 0 Pages 6 7 MB 7 M. 4 84T 5 3S 3M 60M 60L 3 4 / T 5T 54T 56T MB Pages 6 7 MB 38 60M 60L T 56T MB M 80L L 8.5 / 30 84T 86T 34T 36T MB MB Pages 8 9 MB 50 5S 5M T 365T MB M T MB S 80M T 444T / 5 5 / 50 MB S T 5 / / 00 MB Pages 0 MB 70 35M 35L 90 / T 449T MB M 35L 90 / T 449T S 355M 355L / MB Pages 3 MB 00 Directions regarding customized designs of motorbases on pages 4/5. In case of possibly not mentioned motor frame sizes, please contact. 4

5 Test forces for ideal belt tensioning The -Motorbase is offering with its mechanical pretensioning device the ideal calibration of the relevant belt tension, based on the test force recommendations of the belt suppliers. These recommended test forces for the most common V-belt sizes are mentioned in the test force table on the right. 6 mm deflection ø d Test force table by initial V-belt installation (standard values for the most common types of V-belts) V-belt type Width [mm] Height [mm] Diam. of smaller pulley [mm] XPZ, SPZ XPA, SPA Initial operation test-force F I * [N] Operational testforce F O * [N] F XPB, SPB Per 000 mm of span XPC, SPC Z A B C D * Test force for V-belts. By ideal belt tensioning a deflection of 6 mm per 000 mm pulley center distance shall occur. (By shorter or longer span, the value 6 mm has to be interpolated.) Usual positioning of the Motorbase in screen drive applications 45 Linear Motion Screen Low-Head Types. Overhead Configuration Base plate center mounted on element. Plate position horizontally on base. Installation of the entire base 45 inclined (aligned to exciter) Along-Side Configuration Base plate center mounted on element. Plate position horizontally on base. Motor shaft min. 5 above or below the driven eccentric shaft. Circular Motion Screen Ripple-Flow Types 5

Motorbases Type MB 7 Type MB 38 30 A Offset 60* K 85 B MB 7 0 68 5 30 60 ( 30) 5 0 00,5 4

90L 40 40 00 5 0.5 0.5 43T 45T 00L 60 40 0.5 8T 90 4 0.5 M 90 40 0.5 84T 90 40 0.

5 8 0 000 30 MB38 300 3S 3M 60M 60L 6 6 54 54 40 78 0 54 M0 M0 3 3 3T 5T 54T 56T 6 6 54 54

Is the resulting tension-travel of the motorbase not effectual, we recommend to position *

6 Motorbases Type MB 7 Type MB A Offset 60* K 85 B MB ( 30) , ( 30) A Offset 50* K 30 B ,5 MB ( 50) ( 55) 388 4,5 Art.-No. Type Motor Frame Size IEC A B K Motor Frame Size NEMA A B K Weight [kg] MB7 0 90S 90L T 45T 00L T M T MB S 3M 60M 60L M0 M T 5T 54T 56T M0 M Details regarding special designs, see pages 4/5. Is the resulting tension-travel of the motorbase not effectual, we recommend to position * the motor plate in off-set configuration, offering enlarged compensation travel. Motor plate Side supports 3 Pretensioning device 4 Rubber suspension element with clamps (MB 7: clamps / MB 38: 3 clamps) MB 7 0 MB Steel parts blue painted Steel parts galvanized 6

Mounting instructions for MB 7 and MB 38

MB 38 longest tensioning travel, ideal position of

of pretensioning device in this position, insuf

fixations MB 7: 4 oblong holes 5 mm MB 38: 4

5 35 mm 3 Alignment of pulleys and motor fixation

the shaft screw (element axis) MB 7: M6 and MB 38:

test force Tensioning of the belts according to

start of operation MB 7: M6 (locking torque 0 Nm)

7 Mounting instructions for MB 7 and MB 38 Ascertainment of the ideal motorbase position MB 7 MB 38 longest tensioning travel, ideal position of the MB sufficient travel of the MB alter position of pretensioning device in this position, insuf ficient travel is given (contact ) Support fixations MB 7: 4 oblong holes 5 mm MB 38: 4 oblong holes mm 3 Alignment of pulleys and motor fixation 4 screws according relevant motor size 4 Loosen of the shaft screw (element axis) MB 7: M6 and MB 38: M0 5 Insert and tension the belts, control belt test force Tensioning of the belts according to belt suppliers recommended test force (table on page 5). MB 7: by means of MB 38: by means of threaded bushing M0 threaded shaft M6.5 6 Tighten of the shaft screw (element axis), start of operation MB 7: M6 (locking torque 0 Nm) MB 38: M0 (locking torque 40 Nm) Retension: Generally retensioning is not necessary, however, we recommend to control the belt tension after a few days of operation (after running-in of the belts). 7

Motorbase Type MB 50 F 05 AB BB A Offset E * K 5 B 64,5 * 60 50 04 8 0 70 80 90 C 90 400 D Art.-No.

79 79 4 79 4 4 84T 86T 79 79 4 79 4 4 350 350 45 463 7 45 43 0 00 508 MB 50 400 00L 38 305 8 34T 36T 38 38 67 305 8 8 405 390 345 563 55 463 53 0 00 509 MB 50 500 5S 5M 356 356 86 3 8 8 364T 365T 356

According to the final positioning of the base, the operating angle of the belts and the required tensioning travel, the motor plate can be altered in centered position on top of the element axis

8 Motorbase Type MB 50 F 05 AB BB A Offset E * K 5 B 64,5 * C D Art.-No. Type Motor Frame Size IEC A B K Motor Frame Size NEMA A B K AB BB C D E F Weight [kg] MB M 60L T 56T MB M 80L T 86T MB L T 36T MB S 5M T 365T Details regarding special designs, see pages 4/5. * All -Motorbases MB 50 will be supplied with motor plate installed in off-set configuration. According to the final positioning of the base, the operating angle of the belts and the required tensioning travel, the motor plate can be altered in centered position on top of the element axis (recommendable by screen drive applications). Relevant threaded fixation holes are existent in plate. For possibly required additional tensioning travel of the motor plate, the adjusting block of the pretensioning device can be set in the second hole-position of the friction plate (3). Motor plate Side supports 3 Pretensioning device (MB and MB : device / MB and MB : devices) 4 Rubber suspension element with axial-guide bearings and clamps (depending on size = 5 clamps) 3 4 8

Mounting instructions for MB 50 Ascertainment of the ideal

standing ~ 30 inclined Operation area below Motor plate

position of the MB sufficient travel of the MB in this

fixations 4 oblong holes 8 60 mm 3 Alignment of pulleys

4 Loosen of the shaft screw (element axis) and of the

the belts, control belt test force Tensioning of the belts

on page 5). Operation area below : adjust with M0.

of the shaft and fixing screws on friction plate(s), start

0 Nm) Retension: Generally retensioning is not necessary,

9 Mounting instructions for MB 50 Ascertainment of the ideal motorbase position Operation area above Motor plate standing ~ 30 inclined Operation area below Motor plate standing ~ horizontal longest tensioning travel, ideal position of the MB sufficient travel of the MB in this position, insufficient travel is given (contact ) Support fixations 4 oblong holes 8 60 mm 3 Alignment of pulleys and motor fixation 4 screws according relevant motor size 4 Loosen of the shaft screw (element axis) and of the screws on friction plate(s) M0 and M6 5 Insert and tension the belts, control belt test force Tensioning of the belts according to belt suppliers recommended test force (table on page 5). Operation area below : adjust with M0.5 screw (for tightening = screw block upwards) Operation area above : adjust with M0.5 screw (for tightening = screw block downwards) 6 Tighten of the shaft and fixing screws on friction plate(s), start of operation M0 (locking torque 40 Nm), M6 (locking torque 0 Nm) Retension: Generally retensioning is not necessary, however, we recommend to control the belt tension after a few days of operation (after running-in of the belts). 9

Motorbase Type MB 70 AB BB A Offset E * K B Only MB70x800 size 65 365 0 54 5 350 50 550 650 5,5 C D Art.-No.

Weight [kg] 560 565 663 793 50 69 0 00 7 MB 70 650 35S 508 406 6 445T 457 49 630 660 763 893 70 9 0 00 73 MB 70 800 35M 508 457 8 447T 457 508 35L 508 508 8 449T 457 635 630 805 93 043 70 6 Details

10 Motorbase Type MB 70 AB BB A Offset E * K B Only MB70x800 size ,5 C D Art.-No. Type Motor Frame Size IEC A B K Motor Frame Size NEMA A B K AB BB C D E MB M T MB S T M T Weight [kg] MB S T MB M T L T Details regarding special designs, see pages 4 / 5. * All -Motorbases MB 70 will be supplied with motor plate installed in centered configuration on top of the element axis. According to the final positioning of the base, the operating angle of the belts and the required tensioning travel, the motor plate can be altered in off-set position. Relevant threaded fixation holes are existent in plate. For possibly required additional tensioning travel of the motor plate, the fork head of the pretensioning device can be set in one of the eleven hole positions of the friction plate (3). Motor plate Side supports 3 Pretensioning devices = devices 4 Rubber suspension element with axial guide bearings 3 4 0

Mounting instructions for MB 70 Ascertainment of the ideal

the MB sufficient travel of the MB in this position,

compressed-air power tools for tensioning!

and motor fixation 4 screws according relevant motor size 4

friction plates M30 and M6 5 Insert and tension the belts,

belt suppliers recommended test force (table on page 5).

loosen M hex-screws of fork head, select new position, assure

loosen the shaft and fixing screws again 4.

and fixing screws (friction plates), start of operation M30

11 Mounting instructions for MB 70 Ascertainment of the ideal motorbase position longest tensioning travel, ideal position of the MB sufficient travel of the MB in this position, insufficient travel is given (contact ) Do not use compressed-air power tools for tensioning! Support fixations 4 oblong holes 54 mm 3 Alignment of pulleys and motor fixation 4 screws according relevant motor size 4 Loosen of the center screws (element axis) and of the screws on friction plates M30 and M6 5 Insert and tension the belts, control belt test force Tensioning of the belts according to belt suppliers recommended test force (table on page 5). Adjust tension with screws M0 Readjustment of the pretensioning device to required tension travel. tighten center screws and screws on friction plates. loosen M hex-screws of fork head, select new position, assure new position of fork head again 3. loosen the shaft and fixing screws again 4. continue the tensioning with screws M0 6 Tighten of the center and fixing screws (friction plates), start of operation M30 (locking torque 400 Nm), M6 (locking torque 0 Nm) Retension: Generally retensioning is not necessary, however, we recommend to control the belt tension after a few days of operation (after running-in of the belts).

Motorbase Type MB 00 740 A 865 B K 70 30 0 * 450 5 3 65 570 ( 65) 900 00 570 970 Art.-No.

500 8 355M 60 560 8 586/7 584 560 30 355L 60 630 8 490 Details regarding special designs, see pages 4/5.

12 Motorbase Type MB A 865 B K * ( 65) Art.-No. Type Motor Frame Size IEC A B K Motor Frame Size NEMA A B K Weight [kg] MB M 35L T 449T S M / L Details regarding special designs, see pages 4/5. For possibly required longer tensioning travel of the motor L-supports, the pretensioning device (3) shall be bolted * into the front holes of the fork-head on the rubber suspension element. Motor L-supports Side supports 3 Pretensioning device 4 Rubber suspension element 4 3

Mounting instructions for MB 00 Ascertainment of the ideal

of the MB sufficient travel of the MB in this position,

oblong holes 3 70 mm 3 Alignment of pulleys and motor

tension the belts, control belt test force Tensioning of the

13 Mounting instructions for MB 00 Ascertainment of the ideal motorbase position longest tensioning travel, ideal position of the MB sufficient travel of the MB in this position, insufficient travel is given (contact ) Support fixation 4 oblong holes 3 70 mm 3 Alignment of pulleys and motor fixation 4 screws according relevant motor size 4 Insert and tension the belts, control belt test force Tensioning of the belts according to belt suppliers recommended test force (table on page 5). Adjust tension with 4 mm hook wrench Do not use compressed-air power tools for tensioning! Retension: Generally retensioning is not necessary, however, we recommend to control the belt tension after a few days of operation (after running-in of the belts). 3

-Motorbases in customized design for special applications Example Fan drive in heat exchanger with vertically installed motor on MB 50, special The MB 50 had been equipped with an additional bronze

Example Installation of cooling compressors in busses on MB 45 special, equipped with heat-resistant elastic inserts Rubmix 40 In this specific application, the Motorbase is fulfilling two main

Calculation: Tensioning Motorbase y [mm] 450 400 350 300 50 00 50 00 50 0-00 0 00 400 600 800 000 x [mm] d=90 n=040 P=45 s R =93 s F =00 s R =308 center of the element A=579 D=80 Questionnaire:

14 -Motorbases in customized design for special applications Example Fan drive in heat exchanger with vertically installed motor on MB 50, special The MB 50 had been equipped with an additional bronze glide bearing to assure the axial position of the motor on the elastic -element. Example Installation of cooling compressors in busses on MB 45 special, equipped with heat-resistant elastic inserts Rubmix 40 In this specific application, the Motorbase is fulfilling two main functions: keeps the belt tightened between Diesel-engine and cooling compressor, does prevent the transmission of compressor vibrations into the bus chassis. Calculation: Tensioning Motorbase y [mm] x [mm] d=90 n=040 P=45 s R =93 s F =00 s R =308 center of the element A=579 D=80 Questionnaire: Tensioning Motorbase Customer: Date: Machine type: 80 mm D, R d, r diameter and radius of the driven pulley, D= diameter and radius of the drive pulley (above the element), d= the drive pulley (above the element) 90 mm 040 rpm 45 kw.3 - n speed of motor above the element of the motor) 03.5 kw the overturning torque (during start of the motor = P * i i factor of power during the start process 700 mm max. required mm Pi distance of the pulleys 300 P power of the calculation mm A horizontal distance of the pulleys calculation X vertical distance of the pulleys 7 N mm Y half of the belt opening angle belt 7 N a F belt force for pretensioning one belt force for the running process F Rm resulting lever for tensioning the belts 3- s F resulting lever of the pulled belt calculation 3 Nm z number of belts M Sv tensioning moment during pretension process M tensioning moment during running process calculation calculation 5 Nm R 4 Nm s P Sm M torque out of the power Center Mounting Offset Mounting Technical data: Motor data 9. Motor helps tensioning the belts or. Motor frame size Motorbase has to lift the motor calculation 76 mm. Power kw 0. Center mounting or 3. Speed motor rpm Offset mounting calculation Weight of motor kg. Vertical distance DR element to motor Dimensions calculation 3 94 Nm. Offset distance 6. ø driven pulley mm mm 3. Assembling angle mm 5. ø drive pulley calculation 4 94 Nm 7. Center distance drive to driven pulley calculation 5 57 Nm 8. Total belt force (data from belt supplier) 4. Remarks max. torque to the element 57 Nm element choice DR 50x400 mm initial force N Recommended assembling range: 90 +/-45 or 70 +/-45 mm operating force N Sketch: Our proposal is based on received information and technical data from you. Other, unknown factors may influence the proper function of our products. In this case our proposal has to be revised. AG, CH Hunzenschwil.04, IT Tel. +4 (0) , Fax +4 (0) , info@rosta.ch, homepage: 4

15 Example 3 Drive motor of slurry-pump (centrifugal pump) installed on MB special The -Motorbase is assuring the continuous and slippage-free transmission of the required drive torque to maintain the high column of slurry material in mining fluid-transport systems. Example 4 Heavy-Duty Chain- and Belt-Tensioners made out of Motorbase components The Motorbase-elements are offering extremely high torques to tension heaviest chains and oversized belt drives. 5

16 Unlimited possibilities! A few application examples: Changes regarding contents reserved. AG CH-550 Hunzenschwil Phone Fax info@rosta.ch Internet T0.773

ROSTA Motorbases. Self-tensioning Motor Mounts for all Friction Belt Drives slippage-free belt protecting maintenance-free ROSTA

ROSTA Motorbases. Self-tensioning Motor Mounts for all Friction Belt Drives slippage-free belt protecting maintenance-free ROSTA Motorbases Self-tensioning Motor Mounts for all Friction Belt Drives slippage-free belt protecting maintenance-free Customer Benefits of the Rosta Mo MB 27 Offers short-term slippage by the start-up of