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Ⅱ-199PrecautionforUse❶RacewayRecommendedvaluesforsurfacehardnessandroughnessofmatingracewayareshowninTable5andtherecommendedvaluefortheminimumeffectivehardeningdepthisshowninTable6.1andTable6.2.Table5SurfacehardnessandroughnessofracewayItemRecommendedvalueRemarkSurfacehardness58～64HRCWhenthesurfacehardnessislow,multiplytheloadratingbyhardnessfactor(1).Surfaceroughness0.2μmRaorlower(0.8μmRyorlower)Whereaccuracystandardislow,around0.8μmRa(3.2μmRy)isalsoallowed.Note(1)Forhardnessfactor,refertoFig.3inpageⅢ-5.Table6.1Minimumeffectivehardeningdepthofraceway(RWandRWB)unit:mmIdentificationnumberRecommendedvalueforminimumeffectivehardeningdepthRW26RWB140.8RW30RWB161.0RW40RWB241.5RW50RWB322.0RW70RWB482.5RW95RWB643.0Table6.2Minimumeffectivehardeningdepthofraceway(SRandGSN)unit:mmIdentificationnumberRecommendedvalueforminimumeffectivehardeningdepthSR15GSN150.8SR20GSN20SR25GSN251.0SR32GSN32SR40GSN401.5SR50GSN502.0❷AccuracyofmountingsurfaceForaccuracyofmountingsurface,valuesinTable7.1andTable7.2arerecommended.Table7.1Accuracyofmountingsurface(RWandRWB)ItemRecommendedvalue0.02/100orlower0.015/100orlower0.05/100orlowerPermissibletiltReferencemountingsurfaceReferencemountingsurfacePermissibletiltReferencesurfaceReferencelineMotiondirectionTable7.2Accuracyofmountingsurface(SRandGSN)ItemRecommendedvalue0.02/100orlower0.015/100orlower0.05/100orlower❸GroovemachiningonSRandGSNmountingsurfaceWhenmountingSRandGSNtothegroove-machinedmountingsurface,thegroovedepthEshouldbedeeperthantheheightfromthebottomsurfaceofthewaytothebottomoftheSRandGSNtoprovideclearanceforoilpool.(SeeFig.2.)Otherthantheabove,groovewidthWcorrespondingtothewidthW1forSRshouldbeaswideasclearancefitandtherelationbetweentheclearanceandthegroovepositiononthereferencesurfacesidemustbeconsidered.Fig.2Shapeofgrooveonthemountingsurface❹OperatingtemperatureThemaximumoperatingtemperatureis120˚Candtemperatureupto100˚Cisallowedforcontinuousoperation.Whenthetemperatureexceeds100˚C,contactIKO.PermissibletiltReferencemountingsurfacePermissibletiltReferencemountingsurfaceReferencesurfaceReferencelineMotiondirectionW1WE
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