>> P.201
â– MaximumLoadingCapacityofMicrometerHeadsThemaximumloadingcapacityofamicrometerheaddependsmainlyonthemethodofmountingandwhethertheloadingisstaticordynamic(usedasastop,forexample).Thereforethemaximumloadingcapacityofeachmodelcannotbedenitelyspecied.TheloadinglimitsrecommendedbyMitutoyo(atlessthan100,000revolutionsifusedformeasuringwithintheguaranteedaccuracyrange)andtheresultsofstaticloadtestsusingasmallmicrometerheadaregivenbelow.1)RecommendedmaximumloadinglimitStandardtypeHighfunctiontypeSpindlepitch:0.5mmSpindlepitch:0.1mm/0.25mmSpindlepitch:0.5mmSpindlepitch:1.0mmNon-rotatingspindleSeries110micro-nefeedtype(withadifferentialmechanism)*Uptoapprox.19.6N(2kgf)onlyforUltrasmallmodelsMaximumloadinglimitUptoapprox.39.2N(4kgf)*Uptoapprox.19.6N(2kgf)Uptoapprox.39.2N(4kgf)Uptoapprox.58.8N(6kgf)Uptoapprox.19.6N(2kgf)Uptoapprox.19.6N(2kgf)2)Staticloadtestformicrometerheads(using148-104/148-103forthistest)(1)ClampnutP(2)Split-bodyclampClampnutPSplit-bodyclamp(3)SetscrewclampPSetscrewTestmethodMicrometerheadsweresetupasshownandtheforceatwhichtheheadwasdamagedorpushedoutofthexturewhenastaticloadwasapplied,indirectionP,wasmeasured.(Inthetestsnoaccountwastakenoftheguaranteedaccuracyrange.)Mountingmethod(1)Clampnut(2)Split-bodyclamp(3)SetscrewclampDamaging/dislodgingloadDamagetothemainunitwilloccurat8.63to9.8kN(880to1000kgf).Themainunitwillbepushedoutofthextureat0.69to0.98kN(70to100kgf).Damagetothesetscrewwilloccurat0.69to1.08kN(70to110kgf).Note:Theseloadvaluesshouldonlybeusedasanapproximateguide.3-68
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