>> P.55
Theactualpress-fitforceandremovalforcemaybelargerthanthecalculatedvaluesiftheracewayringhasbeenmountedtotheshaftorhousingatatilt,oriftheforceappliedisnotequalovertheracewayringperiphery.Therefore,considerthecalculatedpress-fitforceandremovalforcetobeguidelines,andconfirmwiththeactualdevice.CorrelationbetweenloadpropertiesandfitsTheselectionoffitsisdeterminedbythedirectionofloadonthebearingandtherotationstatusoftheinnerandouterrings;itgenerallyfollowsthetablebelow.LoadconditionsInnerringrotatingloadOuterringstaticloadOuterringrotatingloadInnerringstaticloadBearingrotationFitsInnerringRotatingStaticStaticRotatingOuterringInnerringOuterringStaticRotatingRotatingStaticInterferencefitClearancefitClearancefitInterferencefitIndeterminatedirectionloadRotatingorstaticRotatingorstaticInterferencefitInterferencefitFixingclearancefitswithadhesiveWhenfixingbearingstotheshaftorhousingwithadhesive,etc.,withoutinterference,selectaclearancesuitedtotheadhesivestrength.Inaddition,theappropriateclearancevariesbythetypeofadhesive,soinquirewiththeadhesivemanufacturer.Aswell,notethatcuringstressduetoadhesivehardeningmayadverselyaffecttheracewayringroundness.IntroducingPrecisionMechanicalAssembly(PMA)Inresponsetodiversecustomerneeds,MinebeaMitsumiprovidescustom-mademachinedparts,orPrecisionMechanicalAssembly(PMA).Variousassembliesofourbearingswithcomplexmachinedpartsaresupported.One-stopmanufacturingofvariousmaterialsandshapesispossible.Fordetails,seep.118ofthiscatalog.ConsultMinebeaMitsumiforanyproblemswithfits.55