GERWAH Backlash-free Servo-insert Couplings

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Backlash-free Servo-insert Coupling Assembly InstructionsInstallationClean and degrease both shaft surface andcoupling hub bores. Re-check shaft diametersand coupling bores for proper tolerances.As a standard, the boreholes are equippedwith a fitting in accordance with ISO-H7.For the shafts, we recommend an transition,e.g. H7/g6. When selecting other shaft fitting,the fitting should not exceed a maximum of0.01 - 0.05 mm.Slide a coupling hub onto each shaft andproceed to torque the screws of one clampring or shrink disc after checking axial dimensions.Refer to the technical data to assurecorrect screw tightening torque.Firmly press elastomer spider into one of thetwo hubs. Because of the interference fit,the force necessary to install the spider maybe quite high, therefore a PU tolerant greasesuch as Vaseline may be applied to easeassembly. The edges of the spider and thejaws of the coupling hubs are both chamferedto ease assembly.Raised contact points visible on the front andback side of the elastomer spider help maintainproper spacing between the two hubsassuring electrical isolation and full angularmisalignment capabilities.Carefully push the coupling hubs togetherwhile maintaining the necessary spacing,tighten the screws of the remaining clampring or shrink disc to the recommended torque.The function of the gap is to prevent thecoupling hubs from restraining the axial movementof the spider. This ensures optimumlife of the coupling and spider.coupling hubWhile mountinghubspiderelastic deformationelastomerspiderhubhubhubspiderraisedcontact pointsBacklash free after finalassembly preloadedhubspiderEhub®DIST. AUTORIZADOMEX (55) 53 63 23 31QRO (442) 1 95 72 60MTY (81) 83 54 10 18ventas@industrialmagza.comYou Can Rely On Us!12 info@gerwah.com • www.gerwah.com • Phone 0049-6022-22040 Fax 0049-6022-220411 • D-63868 Grosswallstadt
Backlash-free Servo-insert Coupling Assembly InstructionsTypes ofmisalignmentaxial radial angularAlignmentThe picture above shows the (3)types of misalignment. Themounted coupling needs to bealigned. The more accurate theinitial alignment, the better thecoupling can absorb additionalmisalignment during operation,thereby assuring optimum lifetimeand quiet running conditions.If all (3) types of misalignmentoccur simultaneously, each typemust not reach the maximumallowable value.The combined impact of the actualmisalignment types, expressedas a percentage of the maximumallowable value,Kr radial misalignment (%)10080604020075%Kwangularmisalignment (%)50%25%0%20 30 40 60 80 100must not exceed 100%. The diagrambelow shows the combinedmisalignment.RemovalRemove the locking screws, e.g.on the motor. Pull the drive unit,including the jaw coupling apart.Inspect the spider for wear andif necessary, insert a new spideror one with a different shorehardness.After loosening the keylessclamp ring or shrink disc, thehubs can be removed.Please contact us for detailedinstallation and removalinstructions.Compensation ofmisalignmentExcessive misalignment willcause accelerated wearand premature failure.Ka axialmisalignment (%)MisalignmentsTyp57914192428384248elast.Spider80929880929864809298648092986480929864929864929864929864929864929864ShorescaleAAAAAADAAADAAADAAADAADAADAADAADAADMisalignment typemmradialKrmmaxialKa 1)+0,4-0,2+0,6-0,3+0,8-0,4+1,0-0,5+1,2-0,5+1,4-0,5+1,5-0,7+1,8-0,7+2,0-1,0+2,1-1,00,120,060,040,150,100,060,040,190,130,080,050,210,150,090,060,150,100,060,040,140,100,070,150,110,080,170,120,090,190,140,100,230,160,11scaleangularKw1,1°1,0°0,9°1,1°1,0°0,9°0,8°1,1°1,0°0,9°0,8°1,1°1,0°0,9°0,8°1,1°1,0°0,9°0,8°1,0°0,9°0,8°1,0°0,9°0,8°1,0°0,9°0,8°1,0°0,9°0,8°1,0°0,9°0,8°1) The Ka values need to be added to the dimension L of the coupling selectedDIST. AUTORIZADOMEX (55) 53 63 23 31QRO (442) 1 95 72 60MTY (81) 83 54 10 18ventas@industrialmagza.com®info@gerwah.com • www.gerwah.com • Phone 0049-6022-22040 You Can Rely On Us! Fax 0049-6022-220411 • D-63868 Grosswallstadt13
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GERWAH Backlash-free Servo-insert Couplings

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