>> P.403
I90■AllowableRotationalSpeedTheallowablerotationalspeedofRollerFollowersisaffectedbymountingandoperatingconditions.Fordnvalueswithonlypureradialloadapplied,usethemaximumvaluesinTable10orlessasaguideline.Underactualoperatingconditions,usetherecom-mendeddnvaluesinTable10asaguidelineincon-siderationoftheeffectofaxialloads.Forusewithoscillatingrotation,useaC-LubeRollerFollowerdnvalueof8,000orlessasaguideline.Forusewithone-wayorcontinuousrotation,pleasecon-tactIKO.■LubricationInSealedTypeRollerFollowers,HeavyDutyTypeRollerFollowersandInchseriesRollerFollowers,ALVANIAGREASES2(ShellLubricantsJapanK.K.)isprepackedasthelubricatinggrease.ForRollerFollowerswithoutprepackedgrease,greaseoroilshouldbesuppliedthroughtheoilholeoftheinnerringforuse.Iftheyareusedwithoutlubri-cation,wearofrollingcontactsurfacesmaytakeplace,leadingtoashortbearinglife.■OilHoleOpenTypeSeparableRollerFollowershavenooilhole.InnerringsofothertypesofMetricseriesRollerFollowershaveanoilhole.Inchseriesinnerringshaveanoilgrooveandanoilhole.■MountingTable10dnvaluesofRollerFollowers(1) Note(1)dnvalue=d×n where, d:Borediameterofbearing mm n:Rotationalspeed min-1 Incaseofshieldandsealedtypes,matchthesidesurfacecorrectlytothematingseatingsurfaceindi-catedbythedimensionashowninthedimensiontable,andfixthem.(SeeFig.1.)Inaddition,themountingpartshouldmakeevencontactwiththeentiresideplatesurface.Unevencontactmaycauseincreasedrotationaltorqueandshortentheservicelife.henmountingRollerFollowers,payspecialatten-tiontoavoidlocatingtheoilholeoftheinnerringwithintheloadingzone.Thismayleadtoashortbearinglife.(SeeFig.2.)12WhenmountingSealedTypeSeparableRollerFollowers,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.345Fig.1Matingseatingdimension"a"Fig.2PositionofoilholeandloaddirectionOilholeLoadFig.3ountingexampleofRollerFollowerwithoutinnerringLubricantTypeGreaseOilMaximumRecommendedMaximumRecommendedCagedtype84000840014000014000Fullcomplementtype420004200700007000CylindricalRollerFollower72000720012000012000C-LubeRollerFollowers80008000I
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