>> P.527
L18min-1mm700006000050000400003000020000100008000700060005000400030002000100080070060050040030020010020406080100120140160180Fig.1Allowablerotationalspeedâ– AllowableRotationalSpeedCir-clipsforNeedleRollerBearingsarefixedinthegroovewithacertainamountofpressureonthebot-tomofthegroove.InthecaseofCir-clipsforshaftWRtype,thecentrifugalforcecausesadecreaseinthegrippingpressure.Therefore,whenusingthemathighrotationalspeeds,itisnecessarytofirstchecktheallowablerotationalspeedshowninFig.1.â– MountingThemountingdimensionsforCir-clipsforNeedleRollerBearingsareshowninthedimensiontable.WhenusingtheseCir-clipstorestrictthemovementoftheneedlerollercageintheaxialdirection,itisrec-ommendedthataspacerbeusedbetweentheCir-clipandthecage.Spacersarenotrequiredatlowrotationalspeeds.WhenitisdifficulttoreachCir-clipswithdismountingtoolsanddisassemblyisdifficult,orwhenthefre-quencyofdismountingishigh,itisnecessarytocon-sidertheuseofaretainingring(JISB2804),althoughtheyhaveahighersectionalheight.AllowablerotationalspeedShaftdia.L
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