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D81RNAF7148NAFW302645C2P5N(45mm)(30mm)(7mm)(14mm)(8mm)Examplesofidenti(cid:31)cationnumberExample1Example2ModelcodeDimensionsSupplementalcodeModelcodeDimensionsSupplementalcodeTypeofbearingCagemadeofsyntheticresinClassificationsymbolAccuracyclass(Class5)Clearancesymbol(C2clearance)BearingwidthypeofbearingNominaloutsidediameterRollersetborediameterNominaloutsidediameterBearingwidthNominalborediameter(26mm)■TypesNeedleRollerBearingswithSeparableCageareavailableinthetypesshowninTable1.TheidentificationnumberofNeedleRollerBearingswithSeparableCageconsistsofamodelcode,dimensions,anysupplementalcodesandaclassifica-tionsymbol.Thearrangementexamplesareasfol-lows.■IdentificationNumberNeedleRollerBearingswithSeparableCage-WithoutInnerRingThesingle-rowaswellasthedouble-rowtypesareavailablewiththesamesectionalheight,andeitherofthemcanbeselectedaccordingtoloadconditions.Asshowninthesection,"Designofshaftandhous-ing"onpageA44,anydesiredradialinternalclear-ancecanbeselectedbycombiningashaftwhichisheat-treatedandfinishedbygrinding.NeedleRollerBearingswithSeparableCage-WithInnerRingThesebearingsaremadetotheCNclearanceshowninTable19onpageA37.Whenespeciallyhighaccu-racyisrequired,itispossibletosupplysemi-finishedinnerringswhichhaveafinishingallowanceontheiroutsidediametersothattheycanbegroundafterbeingpress-fittedtoshafts.Table1TypeofbearingTypeModelcodeRNAFWNAFWRNAFNAFDouble-rowWithoutinnerringWithinnerringSingle-rowWithoutinnerringWithinnerring
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