>> P.179
Ⅱ-171IdentificationNumberandSpecificationLubricationPrecautionforUseRelationshipbetweenLoadRatingandBallRacewayRelatedProductsTheloadratingofLMSseriesvariesaccordingtotheloadingdirectionandpositionofballraceway.ThedimensiontabledescribestwotypesofvaluesshowninFig.1.1andFig.1.2accordingtotheloadingdirectionandpositionofballraceway.Fig.1.1showsthecasewheretheloadingdirectionandballracewaypositioncoincideswitheachother,representingtheloadingdirectionAinthedimensiontable.Generally,thisisappliedwhentheballracewaypositioncannotbespecifiedtoindeterminatedirectionloadorloadingdirection.Fig.1.2showsthecasewheretheloadingdirectionispositionedbetweenballraceways,representingtheloadingdirectionBinthedimensiontable.Generally,thiscanbesubjectedtoloadbiggerthanloadingdirectionA.Fig.1.1LoadingdirectionAFig.1.2LoadingdirectionBLoadShaftLoadShaftGreaseisnotpre-packedintheLMSseries,sopleaseperformadequatelubricationasneeded.BothofoillubricationandgreaselubricationareavailableintheLMSseries.Forgreaselubrication,itistypicallyappliedlightlytotheshaftandeachrow.Useofhigh-qualitylithium-soapbasegreaseisrecommendedforthegreasetouse.ShaftforMiniatureLinearBushingTomakefulluseofperformanceoftheLMSseries,wealsooffershaftwithhighaccuracyforMiniatureLinearBushinggroundedafterheattreatment.Ifyouareinterested,contactIKO.❶FittingofexternalcylinderRecommendedfitfortheLMSseriesisindicatedinTable2.Astheexternalcylinderisthin,useepoxytypeadhesiveagentforfixingtothehousinghole,insteadofpress-fitting.Table2Recommendedfit(Tolerancesofdimensionsforshaftandhousinghole)unit:μmltemAccuracyclassShaftHousingholeHigh-6+12-140Precision-4+8-90❷RacewayLMSseriesoperateswithashaftasaracewaysurface,theshaftshouldbeheat-treatedandground.Recommendedsurfacehardness,roughness,andminimumeffectivehardeningdepthofshaftareindicatedinTable3.Table3urfacehardness,roughness,andeffectivehardeningdepthofshaftItemRecommendedvalueRemarkSurfacehardness58～64HRCWhenthesurfacehardnessislow,multiplytheloadratingbyhardnessfactor(1).Surfaceroughness0.2μmRaorlower-(0.8μmRyorlower)Effectivehardeningdepth0.8mmorhigher-Note(1)Forhardnessfactor,refertoFig.3inpageⅢ-5.❸WhenaccompaniedbyrotationalmotionLMSseriesunitssupportonlylinearmotionbutdonotsupportrotationalmotion.Whenperformingrotationalmotionandlinearmotionofshortstrokelength,IKOMiniatureStrokeRotaryBushingisrecommendedtobeused.❹InsertionofshaftWheninsertingashafttotheexternalcylinder,becarefulnottolettheshaftpriedopenasitmaycausedroppingofballsordeformationoftheretainer.❺OperatingtemperatureThemaximumoperatingtemperatureis120˚Candtemperatureupto100˚Cisallowedforcontinuousoperation.Whenthetemperatureexceeds100˚C,contactIKO.Table1ModelsandsizesofLMSseriesShapeExternalcylinderlengthMaterialtypeSealstructureModelSize345HighcarbonsteelmadeWithoutsealLMS○○○WithtwoendsealsLMS…UU○○○StainlesssteelmadeWithoutsealLMS…F○○○WithtwoendsealsLMS…FUU○○○HighcarbonsteelmadeWithoutsealLMSL○○○WithtwoendsealsLMSL…UU○○○StainlesssteelmadeWithoutsealLMSL…F○○○WithtwoendsealsLMSL…FUU○○○StandardLong
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