>> P.532
■Features■AccuracyfinishedIKONeedleRollersaremadeofhighcarbonchromi-umbearingsteel.Theyarerigidandhighlyaccurateandaretoahardnessof58HRCormore(SeeTable1.)andasurfaceroughnessof0.1μmRaorless.Theseneedlerollersarewidelyusedasrollingele-mentsforbearings,andalsoaspinsandshafts.PleasecontactIKO,ifNeedleRollersmadeofstain-lesssteelarerequired.ThedimensionalaccuracyofNeedleRollersconformstoJISB1506 (Rollingbearings-Rollers),andisshowninTable3.Theselectiveclassificationforthemeandiametertol-eranceisshowninTable4.Theselectiveclassifica-tionrollersaccordingtoTable4canbeprovidedasrequested.Table3Dimensionalaccuracyofneedlerollersunit:μmCircularity(1)Gaugelotdiametervariation(1)Deviationofasinglelength(2)∆Lwsh13h13h13VDwL(Max.)235∆R(Max.).5112.5Diametervaria-tioninasingleradialplane(1)VDwp(Max.).5112Class235nominallengthLw.Remark Anymeasureddiameteralongthetotallengthofrollermustnotbelargerthantheactualmaximumdiameteratthecenterofrollerlengthbytheamountexceedingthevaluesgivenbelow.0.5μmforClass20.8μmforClass3 1μmforClass5Table4Classificationofneedlerollersunit:μmClassificationsymbolToleranceformeandia.C3B2B4B6B8B100〜- 30〜- 2-2〜- 4-4〜- 6-6〜- 8-8〜-10inparenthesesareconvertedvaluesforNotes(1) Applicabletothemeasurementatthecenterofrollerlength(2) Toleranceisbasedontheclassificationaccordingtothe697〜900(653〜865)3-(60〜67)58〜66Remarks1. Hardnessisflatsurfacehardness.2. Thevalues-3Table1HardnessNominaldiameterDw mmHardnessOverIncl.HRCHVreference.■EndShapesNeedleRollerscomeinsphericalandflatendshapes,asshowninTable2.PleasecontactIKO,ifothershapesarerequired.Table2ShapesofendsTypeSphericalendFlatendShapesSymbolAFL23
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