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PrecautionforUseⅡ-209❶RacewayRecommendedvaluesforsurfacehardnessandroughnessofmatingracewayareshowninTable4andtherecommendedvaluefortheminimumeffectivehardeningdepthisshowninTable5.Table4SurfacehardnessandroughnessofracewayItemRecommendedvalueRemarkSurfacehardness58～64HRCWhenthesurfacehardnessislow,multiplytheloadratingbyhardnessfactor(1).Surfaceroughness0.2μmRaorlower(0.8μmRyorlower)Whereaccuracystandardislow,around0.8μmRa(3.2μmRy)isalsoallowed.Note(1)Forhardnessfactor,refertoFig.3inpageⅢ-5.Table5Minimumeffectivehardeningdepthofracewayunit:mmRollerdiameterRecommendedvalueforminimumeffectivehardeningdepthOverIncl.-30.5340.8451.0581.58102.01014.1422.514.142203.5❷Whenusedforbedsurfaceand90°VsurfaceAftercompletelappingasindicatedinFig.2,mountFTtoFTW…VA,orFT…VtoFTW…A.CombinationofFlatRollerCageatthispointisindicatedinTable6.90°FT5043FTW5035VAFig.2Exampleofuseonflatsurfaceand90°Vsurface❸StrokelengthandretainerlengthMovementinalineardirectionasinFig.3willmovetheFlatRollerCageinthesamedirectionbyonehalfofthemovementamount.Therefore,waylength,strokelengthandretainerlengtharecorrelatedasfollows:L1=S2+L(1)where,L1:Waylength,mmS:Strokelength,mmL:Retainerlength,mmFig.3❹OperatingtemperatureIftheretainerismadeofsteel,itcanwithstandhighertemperature.However,ifyouuseitinanenvironmentexceeding100˚C,pleasecontactIKO.Theretainermadeofsyntheticresincanwithstandupto100˚C.Forcontinuousoperation,pleasekeepitunder80˚C.LSS/2L1Table6CombinationofFlatRollerCageunit:mmCombinationNumberForflatsurfaceFor90°VsurfaceIdentificationnumberRollerdiameterDwIdentificationnumberRollerdiameterDw1FT40304FTW4030VA2.8282FT40354FTW4030VA2.8283FT50385FTW5035VA3.5354FT50435FTW5035VA3.5355FT10060V7.071FTW5045A56FT10060V7.071FTW5050A57FT1008010FTW10070VA7.0718FT200100V14.142FTW10095A109FT20012020FTW200120VA14.142
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