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D5■ClearanceRadialinternalclearancesofMachinedTypeNeedleRollerBearingsaremadetotheCNclearanceshowninTable18onpageA37.RadialinternalclearancesofBRIseriesarebasedonTable4.■LubricationBearingswithprepackedgreaseareshowninTable5.ALVANIAGREASES2(ShellLubricantsJapanK.K.)isprepackedasthelubricatinggrease.Inthecaseofbearingswithoutprepackedgrease,performproperlubrication.Operatingthemwithoutlubricationwillincreasethewearoftherollingcontactsurfacesandshortentheirlives.■FitTherecommendedfitsforMachinedTypeNeedleRollerBearingsareshowninTables22to24onpagesA41andA42.Table3olerancesforsmallestsinglerollersetborediameterFwsminofinchseriesBRFwNominalrollersetborediametermm∆FwsminDeviationofsmallestsinglerollersetborediameter-18.03430.22641.91050.03870.10480.01018.03430.22641.91050.03870.10480.010102.108unit:μmOverIncl.+43+46+48+51+53+58+61+20+23+25+25+28+28+31HighLowTable4RadialinternalclearanceofinchseriesBRIFwNominalrollersetborediametermmRadialinternalclearance-18.03425.90830.22635.05241.91050.03870.10480.010100.07618.03425.90830.22635.05241.91050.03870.10480.010100.076102.108unit:μmOverIncl.3341464850505656636866768286899299104117127Min.Max.■OilHoleTable6.1showsthenumberofoilholesoftheouterringandTable6.2showsthenumberofoilholesoftheinnerring.Whenanouterringwithanoilholeisespeciallyrequiredforthetypewithoutanoilhole,add"-OH"beforetheclearancesymbolintheidentificationnum-ber.Whenanouterringwithanoilholeandanoilgrooveisrequiredforthetypewithoutanoilhole,attach"-OG"beforetheclearancesymbol.Example:TAFI203216-OHC2P6Whenanouterringwithmultipleoilholesoraninnerringwithanoilhole(s)isrequired,pleaseconsultIKO.Table6.1NumberofoilholesoftheouterringBearingtypeMetricseriesInchseriesMetricseriesCagedNeedleRollerBearingsGuideNeedleRollerBearingsRNA,NATR,TRIGTR,GTRIWithasealononesideWithsealsonbothsidesStandardtypeNumberofoilholesoftheouterring1------1---11-1101121TAF,TAFIBR,BRINominalrollersetborediameterFwmmFw ≦ 2626 < FwFw ≦ 69.85069.850 < FwRemarkThetypewithanoilhole(s)isprovidedwithanoilgroove.Table5BearingswithprepackedgreaseBearingtypeMetricseriesInchseriesMetricseriesCagedNeedleRollerBearingsGuideeedleRollrBearingsRNA,NATR,TRITAF,TAFI,TAF/SGBR,BRIGTR,GTRIWithasealononesideWithsealsonbothsidesStandardtype×----〇--〇-×××××〇:Withprepackedgrease×:Withoutprepackedgrease
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