>> P.144
1N=0.102kgf=0.2248lbs.1mm=0.03937inchAccuracyTable2TwistofgrooveswithrespecttoeffectivelengthoftrackgrooveAllowablevalue33Remark:Thevaluescanbeappliedto100mmoftheeffectivelengthofthetrackgroovepartatanyposition.unit:μmTable3Allowablevaluesoftotalradialrunoutofshaftwithgroovedracewayaxiallineunit:μmOveralllengthofshaftwithgroovedracewaymmOver-200315400500630800Incl.20031540050063080010006142203-----Remark:Thesearevalueswhenaninternalclearanceis0μm.8142203255306---Size10129153173193221--13129153173193221260-16,20126141153165182207240Table4MeasuringmethodsofaccuracyItemMeasuringmethodIllustrationofmeasuringmethodMeasuringblockoftwistofgrooves100ReferenceblockfordialgageprobemovementTwistofgrooveswithrespecttoeffectivelengthoftrackgroove(SeeTable2)Totalradialrunoutofaxiallineofshaftwithgroovedraceway(SeeTable3)Whilesupportingtheshaftwithgroovedraceway,applyaunidirectionaltorsionmomentloadtotheexternalcylinder,placethedialgageprobeverticallytotheshaftwithgroovedracewayonthesidefaceofthemeasuringblockoftwistofgroovesattachedontheexternalcylinder,andmeasurethedeflectionwhentheexternalcylinderandthedialgageprobearemoved100mmintheaxialdirectionatanypositionontheeffectivelengthoftrackgrooveoftheshaftwithgroovedraceway.However,thedialgageprobeshouldbeappliedasnearaspossibletotheouterperipheralfaceoftheexternalcylinder.Whilesupportingtheshaftwithgroovedracewayatitssupportingpartsoratbothcenters,placeadialgageprobeontheouterperipheralfaceoftheexternalcylinder,andmeasurethedeflectionfromonerotationoftheshaftwithgroovedracewayatseveralpositionsintheaxialdirectiontoobtainthemaximumvalue.InternalClearanceTheinternalclearanceofLMGseriesisapproximately10μm.Ⅱ-136
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