Self-Adjusting Motor Base - 3.imimg

ROSTA MotorbasesSelf-tensioning Motor Mounts for all Friction Belt Drivesslippage-free – belt protecting – maintenance-freeROSTA

Customer Benefits of the RostaMB 27Offers short-term slippageby the start-up of large inertias,avoiding excessive tensionon belt-carcass!Offers fast belt changing,no need of complexreadjustment of the pulleys!Fully maintenance-free tensioning system,no need of periodical compensationof belt elongation!MotorbasesMB 38www.rosta.com5.2

Motorbases in Friction Belt DrivesMB 50Prevents from slack accruement,avoids heat generating slippage of the beltsand averts from premature belt failure!Offers ideal belt tension,constant transmission of nominal torque,less energy consumption,can lead to threefold belt lifetime!MB 70Noiseless power transmission,all time ideally tightened belt sets!MB 100www.rosta.com5.3

Selection table of Rosta Motorbasesaccording to the motor frame sizes0.751DetailsMB 27 120Pages5.6 –5.7MB 38 300Pages5.6 –5.711.5 / 21.52.2 / 3182T1.53112M2.24184T25132S132M34 / .5101520160M160L7.5111115254T256T7.5101520MB 50 270-1180M180L–1518.522284T286T15202530MB 50 270-2200L18.5 / 2230324T326T25304050MB 50 400225S225M–303745364T365T40506075MB 50 500250M3755404T60100MB 70 400280S280M45557590405T444T75100100 / 125125 / 150MB 70 550315S75110445T125 / 150150 / 200MB 70 650315M315L90 / –300200–250250–300MB 70 800315M315L90 / 0200–250250250MB 100 750586/7250–350300–350Directions regarding customized designs of motorbases on pages 5.14 – 5.15.In case of possibly not mentioned motor frame sizes, please contact ROSTA .www.rosta.com5.4Standard DesignPages5.8 –5.9MB 27143T145TType ofMotorbaseMB 381.11.5P [HP]P [HP]1200 min–1 1800 min–16-pole motor 4-pole zeMB 5090S90LP [kW]P [kW]1000 min–1 1500 min–16-pole motor 4-pole motorPages5.10 –5.11MB 70MotorFrameSizeNEMAPages5.12 –5.13MB 100IEC

Test forces for ideal belt tensioningTest force table by initial V-belt installationThe ROSTA Motorbase is offering with itsmechanical pretensioning device the idealcalibration of the relevant belt tension,based on the test force recommendationsof the belt suppliers. These recommendedtest forces for the most common V-beltsizes are mentioned in the test force tableon the right.(standard values for the most common types of V-belts)16 mm deflectionV-belt typeWidth[mm]Height[mm]Diam. of smaller pulley [mm]Initial operationtest-force FI* [N]Operational testforce FO* [N]XPZ, SPZ10856–7175–9095–125 1252022252816182022XPA, SPA131080–100106–140150–200 2002838455022303640XPB, SPB1613112–160170–224236–355 3555062778140506265XPC, SPC2218224–250265–355 0–15ødFPer 1000 mm of 9355–60070–105* Test force for V-belts. By ideal belt tensioning a deflection of 16 mmper 1000 mm pulley center distance shall occur. (By shorter or longerspan, the v alue 16 mm has to be interpolated.)Usual positioning of the ROSTA Motorbase in screen drive applications45 1. “Overhead” ConfigurationBase plate “center mounted” on ROSTA element. Plate position horizontally on base.Installation of the entire base 45 inclined (aligned to exciter).Linear Motion Screen“Low-Head” Types15 2. “Along-Side” ConfigurationBase plate “center mounted” on ROSTA element. Plate position horizontally on base.Motor shaft min. 15 above or below the driven eccentric shaft.Circular Motion Screen“Ripple-Flow” Typeswww.rosta.com5.5Motorbases15

MotorbasesType MB 27Type MB 38230185AB*Offset 6068100,510K30(30)1601142525MB 27 12050(30)164220272310310AB*Offset 5012016212K13,535206MB 38 30050(50)25055412,5IECArt. No.02 200 20102 000 301TypeMB27 120MB38 300(55)265388NEMAMotor FrameSizeABKMotor 4T256T2542542102541313Weight[kg]826Details regarding special designs, see pages 5.14 – 5.15.Is the resulting tension-travel of the motorbase not effectual, we recommend to positionthe motor plate in “off-set” configuration, offering enlarged compensation travel.*Motorbases1234Motor plateSide supportsPretensioning deviceRubber suspension elementwith brackets(MB 27: 2 brackets /MB 38: 3 brackets)ROSTAwww.rosta.com5.611334422MB 27 120Steel parts blue paintedMB 38 300Steel parts galvanized

Mounting instructions for MB 27 and MB 381 Ascertainment of the ideal motorbase positionMB 27MB 38longest tensioning travel, ideal positionof the MBsufficient travel ofthe MBalter position of pretensioning deviceMB 27:4 oblong holes 11 25 mmMB 38:4 oblong holes 13.5 35 mm3 Alignment of pulleysand motor fixation4 screws according relevant motorsize5 Insert and tension the belts, control belt test forceTensioning of the belts according to belt suppliers recommended test force (table on page 5.5).MB 27: by means ofthreaded bushing M10MB 38: by means ofthreaded shaft M16 1.54 Loosen of the shaft screw(element axis)MB 27: M16 and MB 38: M206 Tighten of the shaft screw(element axis), start of operationMB 27: M16 (locking torque 210 Nm)MB 38: M20 (locking torque 410 Nm)Motorbases2 Support fixationsin this position, insuf fi cient travel is given ( contact ROSTA )Retension:Generally retensioning is not necessary, however, we recommend to control the belt tensionafter a few days of operation (after “running-in” of the belts).www.rosta.com5.7

MotorbasesType MB 50F205ABBBAB*1570181060204*K150264,5Offset E28090C400IECnew90DNEMAMotor FrameSizeABKMotor FrameSizeABKABBBCDEFWeight[kg]MB 50 414320315245463254374102 200 507MB 50 414350350245463724524302 200 508MB 50 3554635302 200 509MB 50 84654204256437251060Art. No.Type02 200 516Details regarding special designs, see pages 5.14 – 5.15.Motorbases*All ROSTA Motorbases 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, themotor plate can be altered in “centered” position ontop of the element axis (recommendable by screen driveapplications). Relevant threaded fixation holes are exist ent in plate.1 Motor plate2 Side supports3 Pretensioning device(MB 50 270-1 and MB 50 270-2: 1 device /MB 50 400 and MB 50 500: 2 devices)4 Rubber suspension element with axial-guide bearingsand brackets (depending on size 3–5 brackets)www.rosta.com5.8For possibly required additional tensioning travel of themotor plate, the adjusting block of the pretensioning device can be set in the second hole-position of the frictionplate (3).1342

Mounting instructions for MB 501 Ascertainment of the ideal motorbase positionOperation area “above”Motor plate standing 30 inclinedOperation area “below”Motor plate standing horizontallongest tensioning travel, ideal position of the MBsufficient travel of the MBin this position, insufficient travel is given(contact ROSTA )4 oblong holes 18 60 mm3 Alignment of pulleysand motor fixation4 screws according relevant motorsize5 Insert and tension the belts, control belt test forceTensioning of the belts according to belt suppliers recommended test force (table on page 5.5).Operation area “below”:adjust with M20 1.5 screw(for tightening screw block upwards)Operation area “above”:adjust with M20 1.5 screw(for tightening screw block downwards)4 Loosen of the shaft screw(element axis) and of the screwson friction plate(s)M20 and M166 Tighten of the shaft andfixing screws on friction plate(s),start of operationM20 (locking torque 410 Nm),M16 (locking torque 210 Nm)Motorbases2 Support fixationsRetension :Generally retensioning is not necessary, however, we recommend to control the belt tensionafter a few days of operation (after “running-in” of the belts).www.rosta.com5.9

MotorbasesType MB 70ABBBAB*K20only MB70x800265365Offset E1554350502252,5550C650IECNEMAArt. No.TypeMotorFrame SizeAB02 200 710MB 70 400250M40634902 200 711MB 70 550280S457368280M45741902 200 712MB 70 65002 200 713MB 70 800DKMotorFrame 5763522MotorbasesDetails regarding special designs, see pages 5.14 – 5.15.*All ROSTA Motorbases MB 70 will be supplied withmotor plate installed in “centered” configuration ontop of the element axis. According to the final positioningof the base, the operating angle of the belts and the re quired tensioning travel, the motor plate can be altered in“off-set” position. Relevant threaded fixation holes areexistent in plate.1234Motor plateSide supportsPretensioning devices 2 devicesRubber suspension element with axial guide bearingsFor possibly required additional tensioning travel of themotor plate, the fork head of the pretensioning devicecan be set in one of the eleven hole positions of the friction plate (3).1342www.rosta.com5.10

Mounting instructions for MB 701 Ascertainment of the idealmotorbase position21longest tensioningtravel, ideal positionof the MBsufficient travel ofthe MBin this position,insufficient travelis given (contactROSTA )Do not usecompressed-air powertools for tensioning!122 Support fixations4 oblong holes 22 54 mm3 Alignment of pulleysand motor fixation4 screws according relevant motor size4 Loosen of the center screws(element axis) and of the screwson friction platesM30 and M16Tensioning of the belts according to belt suppliers recommended test force(table on page 5.5).Adjust tensionwith screws M20Readjustment of the pretensioningdevice to required tension travel1. Tighten center screws and screws on friction plates2. Loosen M12 hex-screws of fork head, select newposition, assure new position of fork head again3. Loosen the shaft and fixing screws again4. Continue the tensioning with screws M206 Tighten of the center and fixingscrews (friction plates), start ofoperationM30 (locking torque 1400 Nm),M16 (locking torque 210 Nm)Motorbases5 Insert and tension the belts, control belt test forceRetension :Generally retensioning is not necessary, however, we recommend to control the belt tensionafter a few days of operation (after “running-in” of the belts).www.rosta.com5.11

MotorbasesType MB 100740865AB70(65)57065200570920970IECArt. No.new02 200 900TypeMB 100 7503225*31045020KNEMAMotor FrameSizeABKMotor L61063028Weight[kg]490Details regarding special designs, see pages 5.14 – 5.15.For possibly required longer tensioning travel of the motor L-supports, the pretensioning device (3) shall be boltedinto the front holes of the fork-head on the rubber suspension element.*Motorbases1234Motor L-supportsSide supportsPretensioning deviceRubber suspension element423www.rosta.com5.121

Mounting instructions for MB 1001 Ascertainment of the ideal motorbase positionlongest tensioning travel, ideal position of the MBsufficient travel of the MBin this position, insufficient travel is given(contact ROSTA )2 Support fixation3 Alignment of pulleys and motor fixation4 oblong holes 32 70 mm4 screws according relevant motor size4 Insert and tension the belts, control belt test forceTensioning of the belts according to belt suppliers recommended test force (table on page 5.5).Adjust tension with 46 mm hook wrench2Do not usecompressed-air powertools for tensioning!12Motorbases1Retension :Generally retensioning is not necessary, however, we recommend to control the belt tensionafter a few days of operation (after “running-in” of the belts).www.rosta.com5.13