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

Transcription

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

2 Customer Benefits of the ROSTA 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 8 Fully maintenance-free tensioning system, no need of periodical compensation of belt elongation! 5.

3 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

4 Selection table of ROSTA 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] P [HP] 00 min 800 min 6-pole motor 4-pole motor Type of Motorbase Details Standard Design 90S 90L T 45T / 00L.5. / 8T.5 MB 7 0 Pages MB 7 M. 4 84T 5 S M 60M 60L 4 / T 5T 54T 56T MB 8 00 Pages MB 8 S M 4/ T 5T 5 0 MB M 60L 5 54T 56T MB or MB Gen 5 MB 50 80M 80L T 86T MB or MB Gen 5 Pages L 8.5 / 0 5S 5M T 6T 64T 65T MB or MB Gen 5 MB or MB Gen 5 MB 50 Gen 5 50M T MB S 80M T 444T / 5 5 / 50 MB S T 5 / / 00 MB Pages MB 70 5M 5L 90 / T 449T MB M 5L 90 / T 449T S 55M 55L / MB Pages ROSTA up to 560 kw (760HP) upon request. Please contact ROSTA with your application details. MB

5 Test forces for ideal belt tensioning The ROSTA 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. 0.6 inch belt deflection per 9.7 inch centre distance Test force table by initial V-belt installation (standard values for the most common types of V-belts) V-belt type Width [in] Height [in] Diam. of smaller pulley [in] XPZ, SPZ XPA, SPA XPB, SPB XPC, SPC Initial operation test-force F I ** [lb] Z Operational test-force F O ** [lb] A Exception For screen applications the belt only tighten enough that they do not slip during start-up and operation. B C D ** Test force for V-belts. By ideal belt tensioning a deflection of 0.6 inch per 9.7 inch pulley center distance shall occur. (By shorter or longer span, the value 0.6 inch has to be interpolated.) Usual positioning of the ROSTA Motorbase These recommendations are based on practical experience, a test run will show the ideal adjustment. Screen drive applications Overhead Configuration ca.45 ca.5 Along-Side Configuration Motor ca. +5 to +45 Motor ca. 5 to 45 Foot-Mounting Configuration, Feeder Extended off-set and larger Motorbase size recommended. ca.5 ca.0 Pump drive applications Overhead Configuration Motor plate off-set, towards the pretensioning device. Along-Side Configuration Crusher applications Variable Loads Motor plate off-set, towards the pretensioning device. ca.0 ca

6 Type MB 7 Type MB Offset.6 A * K B MB (.8) (.8) A Offset.97 * K B 0.47 MB (.97) (.7) Art. No. Type Motor Frame Size IEC (mm) A B K Motor Frame Size NEMA (inch) A B K Weight [lb] MB7 0 90S 90L T 45T L T M T MB8 00 S M 60M 60L M0 M0 T 5T 54T 56T M0 M Details regarding special designs, see pages * 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 Pretensioning device 4 Rubber suspension element with brackets (MB 7: brackets / MB 8: brackets) 4 MB 7 0 Steel parts blue painted MB 8 00 Steel parts galvanized

7 Mounting instructions for MB 7 and MB 8 Determine of the ideal motorbase position MB 7 MB 8 longest tensioning travel, ideal position of the MB alter position of pretensioning device sufficient travel of the MB in this position, insuf ficient travel is given (contact ROSTA) Support fixations MB 7: 4 slotted holes inch MB 8: 4 slotted holes inch 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 8: 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 5.5). MB 7: by means of MB 8: 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 55 lb ft) MB 8: M0 (locking torque 0 lb ft) Retension: Generally retensioning is not necessary, however, we recommend to inspect the belt tension after a few days of operation (after running-in of the belts)

8 Type MB 50 on: E BB P AA U C T.5.8 W V M L N B A F Rubber suspension element Art. No. Type 0006 MB MB MB MB MB Motor Frame Size T 5T 54T 56T 84T 86T 4T 6T 64T 65T NEMA 00 RPM HP RPM HP Overall Dimensions in inches AA BB A B C E F L M N P T U V W Details regarding special designs, see pages All ROSTA MB 50 will be supplied with motor plate installed in off-set configuration. Accord ing 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 exist ent 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 (). Motor plate Side supports Pretensioning device (MB 50 60; MB and MB 50x70: device / MB and MB : devices) 4 Rubber suspension element with axial-guide bearings and brackets (depending on size = 5 brackets) 5 Brackets (depending on size = 5 brackets) 5 4 MOTORBASE TYPE MB 50x60 MB 50x00 MB 50x70 MB 50x400 MB 50x500 MB 50 ASSEMBLING KITS KIT NO. (AT LEFT). PLATE. RIGHT SS LEFT SS. PRETENSION UNIT 4. ELEMENT 5. BRACKETS. PLATE. RIGHT SS LEFT SS. PRETENSION UNIT 4. ELEMENT 5. BRACKETS. PLATE. RIGHT SS LEFT SS. PRETENSION UNIT 4. ELEMENT 5. BRACKETS. PLATE. RIGHT SS LEFT SS. PRETENSION UNIT 4. ELEMENT 5. BRACKETS. PLATE. RIGHT SS LEFT SS. PRETENSION UNIT 4. ELEMENT 5. BRACKETS ARTICLE NO QUANTITY PCS PCS PCS PCS 4 PCS PCS 5 PCS 5.8

9 Mounting instructions for MB 50 Determine of the ideal motorbase position Operation area above Motor plate standing ~ 0 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 ROSTA) Support fixations 4 slotted holes inch 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 5.5). 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 0 lb ft), M6 (locking torque 55 lb ft) Retension: Generally retensioning is not necessary, however, we recommend to inspect the belt tension after a few days of operation (after running-in of the belts)

10 Type MB 50 Gen 5 AB A BB Offset E K B.95 / / 0.7 I / J G / H I / J 9.09 D IEC NEMA Art. No. Type Motor Frame Size A B K Motor Frame Size A B K AB BB D E G H I J 00 0 MB Gen 5 60M 60L T 56T MB Gen 5 80M 80L T 86T MB Gen 5 00L T 6T MB Gen 5 5S 5M T 65T * All ROSTA MB 50 will be supplied with motor plate installed in off-set configuration. Accord ing 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. Relevant threaded fixation holes are exist ent in plate. For possibly required higher inclination of the motorplate, the rotary plate(s) can be removed and remounted 45 rotated. Motor plate Side supports Pretensioning device (MB and MB : device / MB and MB : devices) 4 Rubber suspension element with cardanic bushings and brackets (depending on size = 5 brackets)

11 Mounting instructions for MB 50 Gen 5 Determine of the ideal motorbase position Operation area above Motor plate standing ~ 0 inclined Operation area below Motor plate standing ~ horizontal ideal position of the MB, longest tensioning travel sufficient tensioning travel contact ROSTA Do not use compressed-air power tools for tensioning! Support fixations 4 slotted holes 0,87, inch Alignment of pulleys and motor fixation 4 bolts according relevant motor size 4 Loosen of the shaft bolt (element axis) 0 mm ( 4") wrench 5 Insert and tension the belts, control belt test force Tensioning of the belts according to belt suppliers recommended test force. Adjust tension with a 0 mm( 4") wrench (uniformly if pretensioning devices are supplied). The belt tension can easily be monitored according to the reference mark on the angle scale. Operation area below Operation area above 6 Tighten of the shaft bolt, start of operation 0 mm( 4") wrench Locking torque 40 Nm (0 lb ft) Retension: Generally retensioning is not necessary, however, we recommend to inspect the belt tension after a few days of operation according the sticker on the side supports. 5.

12 Type MB 70 AB BB A Offset E * K B only MB70x C D Art. No. Type Motor Frame Size IEC (mm) NEMA (inch) (inch) A B K Motor Frame Size A B K AB BB C D E MB M T MB S T M T Weight [lb] MB S T MB M T L T Details regarding special designs, see pages We will be glad to calculate your specific system, please ask for our relevant questionnaire. * All ROSTA 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 (). Motor plate Side supports Pretensioning devices = devices 4 Rubber suspension element with axial guide bearings

13 Mounting instructions for MB 70 Determine 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 ROSTA) Do not use compressed-air power tools for tensioning! Support fixations 4 slotted holes inch 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 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 5.5). 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. 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 M0 (locking torque 0 lb ft) M6 (locking torque 55 lb ft) Retension: Generally retensioning is not necessary, however, we recommend to inspect the belt tension after a few days of operation (after running-in of the belts). 5.

14 Type MB A 4.06 B K * (.56) Art. No. Type Motor Frame Size IEC (mm) A B K Motor Frame Size NEMA (inch) A B K Weight [lb] new MB M 5L T 449T S M / L Details regarding special designs, see pages We will be glad to calculate your specific system, please ask for our relevant questionnaire. * For possibly required longer tensioning travel of the motor L-supports, the pretensioning device () shall be bolted into the front holes of the fork-head on the rubber suspension element. Motor L-supports Side supports Pretensioning device 4 Rubber suspension element

15 Mounting instructions for MB 00 Determine 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 ROSTA) Support fixation 4 slotted holes.6.76 inch 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 5.5). Adjust tension with.8 inch hook wrench Do not use compressed-air power tools for tensioning! Retension: Generally retensioning is not necessary, however, we recommend to inspect the belt tension after a few days of operation (after running-in of the belts)

16 ROSTA in customized design for special applications 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 ROSTA element. Installation of cooling compressors in busses on MB 45 special, equipped with heat-resistant elastic inserts Rubmix 40 In this specific application, the ROSTA Motorbase is ful filling two main functions: keeps the belt tightened between Dieselengine and cooling compressor, does prevent the transmission of compressor vibrations into the bus chassis

17 Drive motor of slurry-pump (centrifugal pump) installed on MB special The ROSTA 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. Heavy-Duty belt and chain tensioners made out of Motorbase components The ROSTA Motorbase elements are offering extremely high torques to tension heaviest chains and oversized belt drives

18 Unlimited possibilities! A few examples: ROSTA Changes regarding contents reserved. Any reprint, also in extracts, requires our explicit and confirmed approval. ROSTA USA Corp. 45 Kalamazoo Street South Haven, MI Toll-free: Phone: Fax: info@rosta.com Internet: T04.87