>> P.146
1N=0.102kgf=0.2248lbs.1mm=0.03937inchMomentofInertiaofSectionalAreaandSectionCoefficientofShaftwithGroovedRacewayTable5MomentofinertiaofsectionalareaandsectioncoefficientofshaftwithgroovedracewaySize6810131620MomentofinertiaofsectionalareaSectioncoefficientmm4mm3SolidshaftHollowshaftSolidshaftHollowshaft6019047013603130772059190460130029307230204995210390770204893200360720LubricationDustProtectionGreaseisnotpre-packedintheLMGseries,sopleaseperformadequatelubricationasneeded.BothoillubricationandgreaselubricationareavailableintheLMGseries.Forgreaselubrication,useofhigh-qualitylithium-soapbasegreaseisrecommended.PrecautionforUseNodustprotectionsealisprovidedforLMGseries.Forapplicationsinotherthancleanenvironment,covertheentireunitwithaprotectivecase,etc.topreventharmfulforeignsubstancessuchasdustandparticlesfromoutsidefromentering.Thespecialspecificationwithendseals(supplementalcode/U)hasadustprotectioneffect.However,iflargeamountofcontaminantordustarefloating,oriflargeparticlesofforeignsubstancessuchaschipsorsandmayadheretotheshaftwithgroovedraceway,itisrecommendedtoattachaprotectivecovertothelinearmotionmechanism.❶FittingofexternalcylinderGenerally,clearancefit(H7)isrecommendedforfittingbetweentheexternalcylinderandthehousingbore.Thetransitionfit(J7)maybeappliedforspecialuse.❺OperatingtemperatureThemaximumoperatingis120˚Candtemperatureupto100˚Cisallowedforcontinuousoperation.Whenthetemperatureexceeds100˚C,contactIKO.temperature❷TypicalmountingstructureMountingexamplesoftheexternalcylinderareshowninFig.1.Thefixingthreaddepthofmountingscrewsfortheexternalcylindermustnotexceedthemaximumfixingthreaddepthindicatedinthedimensiontable.Sincethescrewholefortheexternalcylinderispenetrated,theshaftwithgroovedracewaywillbepushedbythescrewifthefixingthreaddepthistoodeep,andtherunningaccuracyandlifewillbeadverselyaffected.❻MountingofexternalcylinderWhenpress-fittingtheexternalcylindertothehousing,assemblethemcorrectlybyusingapressandasuitablejigfixture.(SeeFig.2.)1.giFMountingexamplesofexternalcylinder❸MultipleexternalcylindersusedincloseproximityWhenusingmultipleexternalcylindersinclosedistancetothesamehousing,itisrecommendedtoensurethatthedistancebetweentheexternalcylindersisthreetimesaslongasthelengthoftheexternalcylinder.Whenusingmultipleexternalcylindersincloserdistance,contactIKO.❹LoadedconditionwithrotatingtorqueUseIKOLinearBallSplineGunderloadedconditionswitharotatingtorquebi-directionallyorrepeatedly.2.giFPress-fittingofexternalcylinderⅡ-138
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