>> P.403
I■AllowableRotationalSpeedTheallowablerotationalspeedofRollerFollowersisaffectedbymountingandoperatingconditions.Fordnvalueswithonlypureradialloadapplied,usethemaximumvaluesinTable10orlessasaguideline.Underactualoperatingconditions,usetherecom-mendeddnvaluesinTable10asaguidelineincon-siderationoftheeffectofaxialloads.Forusewithoscillatingrotation,useaC-LubeRollerFollowerdnvalueof8,000orlessasaguideline.Forusewithone-wayorcontinuousrotation,pleasecon-tactIKO.Table10dnvaluesofRollerFollowers(1) OilLubricantGreaseMaximumRecommendedMaximumRecommendedTypeCagedtype84000Fullcomplementtype42000CylindricalRollerFollower720008400420072001400001400070000700012000012000C-LubeRollerFollowers80008000Note(1)dnvalue=d×n where, d:Borediameterofbearing mm n:Rotationalspeed min-1 ■LubricationInSealedTypeRollerFollowers,HeavyDutyTypeRollerFollowersandInchseriesRollerFollowers,ALVANIAGREASES2(ShellLubricantsJapanK.K.)isprepackedasthelubricatinggrease.ForRollerFollowerswithoutprepackedgrease,greaseoroilshouldbesuppliedthroughtheoilholeoftheinnerringforuse.Iftheyareusedwithoutlubri-cation,wearofrollingcontactsurfacesmaytakeplace,leadingtoashortbearinglife.■OilHoleOpenTypeSeparableRollerFollowershavenooilhole.InnerringsofothertypesofMetricseriesRollerFollowershaveInchseriesinnerringshaveanoilgrooveandanoilhole.anoilhole.■Mounting12thedimensionashowninIncaseofshieldandsealedtypes,matchthesidesurfacecorrectlytothematingseatingsurfaceindi-catedbythedimensiontable,andfixthem.(SeeFig.1.)themountingpartshouldmakeevenInaddition,contactwiththeentiresideplatesurface.Unevencontactmaycauseincreasedrotationaltorqueandshortentheservicelife.WhenmountingRollerFollowers,payspecialatten-tiontheoilholeoftheinnerringwithintheloadingzone.Thismayleadtoashortbearinglife.(SeeFig.2.)toavoidlocating345WhenmountingSealedTypeSeparableRollerFollowers,donotcausethesideplatestocomeoff.Iftheycomeoff,setthemagaininplacetakingcaretoavoiddamagingtheseallips.IncaseofRollerFollowerswithoutaninnerring,theshaftrequiresheattreatmentandgrindingfin-ish.Therecommendedsurfacehardnessoftheshaftis58〜64HRC,andtherecommendedrough-nessoftheshaftis0.2μmRaorless.Also,theouterringandcageareguidedbysidesurfacesofthemountingparts.Therefore,itisrec-ommendedthatthesidesurfacesofthemountingpartsbefinishedbygrindingoratleastbymachin-ing.(SeeFig.3.)InNon-separableRollerFollowers,thesideplatesarepress-fitted.Therefore,whenmountingtheRollerFollowers,donotpushthesideplates/outerrings.Pushingonthesideplatesorouterringsmaycauseunsatisfactoryproductperformance.Fig.1Matingseatingdimension"a"OilholeLoadFig.2PositionofoilholeandloaddirectionFig.3MountingexampleofRollerFollowerwithoutinnerringI90
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