>> P.289
Ⅱ-239LubricationDustProtectionPrecautionforUseLithium-soapbasegreasewithextreme-pressureadditive(AlvaniaEPGrease2[ShellLubricantsJapanK.K.])ispre-packedinLinearWayModuleseries.ThoughgreasenipplesarenotappendedtoLinearWayModuleseries,oilholesareprovidedtoslidemembersothatthegreaseorlubricationoilsuppliedfrommachines/devicesisdirectlyguidedtotherollingelementsrecirculationroute.Lubricationiseasilyconductedbyprovidingthesupplyrouteinthemachines/devicesasshowninFig.3.TheslidemembersofLinearWayModuleseriesareequippedwithendsealsasstandardfordustprotection.However,iflargeamountofcontaminantordustarefloating,oriflarge❶ountingsurface,referencemountingsurfaceandtypicalmountingstructureWhenmountingtheLinearWayModuleseries,properlyalignthereferencemountingsurfacesBandDofthetrackrailandslidememberwiththereferencemountingsurfaceofthetableandbedandfixthem.(SeeFig.4)ThereferencemountingsurfacesBandDandmountingsurfacesAandCarepreciselyground.Machiningthemountingsurfaceofthetableandbed,suchasmachineordevice,tohighaccuracyandmountingthemproperlywillensurestablelinearmotionwithhighaccuracy.Fig.4Referencemountingsurfaceandtypicalmountingstructure❷FixingtheslidememberTypicalmountingstructureofLinearWayModuleseriesisshowninFig.5.Asaconvenientmeanstoeliminateplayortogivepreloadinlinearmotionrollingmechanism,preloadadjustingscrewsareoftenused.Setthepreloadadjustingscrewsatthepositionsoffixingboltsofslidememberandinthemiddleoftheheightofslidemember,andthenpresstheslidememberbytighteningthescrew.FormountingtheslidememberofLinearWayModuleLWLM,itisrecommendedtofixtheslidememberfromthetableside,becausetheallowanceforthepreloadadjustmentintheboltholeofslidememberissmall.Inthiscase,theboltholeandthecounterboreinthetableshouldbemadelargertogivetheadjustmentallowance.Fig.5MountingbypreloadadjustingscrewsBADCDCABDCABPreloadadjustingscrewPreloadamountvariesdependingonoperationalconditionsofyourmachineanddevice.However,asexcessivepreloadmayleadtoshortlifeanddamageontheraceway,itistypicallyidealtoadjusttozeroclearanceorslightpreloadstate.❸houlderheightandcornerradiusofthereferencemountingsurfaceFortheoppositecornerofthematingreferencemounting,itisrecommendedtohaverelievedfilletasindicatedinFig.6.RecommendedvaluefortheshoulderheightandcornerradiusonthematingsideisindicatedinTable7.1,Table7.2andTable7.3.Fig.6Cornerofthematingreferencemounting❹TighteningtorqueforfixingscrewTypicaltighteningtorqueformountingofLinearWayModuleseriestothesteelmatingmembermaterialisindicatedinTable6.Whenvibrationandshockofthemachineordevicearelarge,fluctuatingloadislarge,ormomentloadisapplied,fixitbyusingthetorque1.2to1.5timeslargerthanthevalueindicatedinthetableasnecessary.Ifthematingmembermaterialiscastironoraluminumalloy,reducethetighteningtorquedependingonthestrengthcharacteristicsofthematingmembermaterial.Table6TighteningtorqueforfixingscrewBoltsizeTighteningtorqueN・mHighcarbonsteel-madescrewStainlesssteel-madescrewM2.6×0.45-0.7M3×0.51.81.1M4×0.74.1-M5×0.88.0-M6×113.6-M8×1.2532.7-M10×1.563.9-M12×1.75110-Remark:hetighteningtorqueiscalculatedbasedonstrengthdivision12.9andpropertydivisionA2-70.Fig.3Exampleoflubricationmethodparticlesofforeignsubstancessuchaschipsorsandmayadheretothetrackrail,itisrecommendedtocoverthewholeunitwithbellowsortelescopetypeshield,etc.
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