>> P.61
1N=0.102kgf=0.2248lbs.1mm=0.03937inchMountingPreparationBeforemountingthebearing,thedimensionsandfil-letsoftheshaftandhousingshouldbecheckedtoensurethattheyconformtospecifications.Bearingsshouldbeunwrappedjustbeforemounting.Incaseofgreaselubrication,bearingsshouldbefilledwithgreasewithoutcleaningthebearings.Eveninthecaseofoillubrication,itisnormallyunnecessarytocleanthebearings.However,whenhighaccuracyisrequiredorwhenusingathighspeeds,thebearingsshouldbecleanedusingcleaningoiltoremovethor-oughlyoilycontents.cleanedbearingsshouldnotbeleftalonewithoutanti-corrosiveprecautions,becausebearingscaneasilybecorrodedafteranti-corrosiveagentsareremoved.Lubricatinggreasebearings.eachbearing.insometypesoffortherelevantsectionTherefore,referisprepackedThetoMethodsofmountingMountingmethodsofbearingsaredifferentaccordingtothetypeofbearingandthefit.Ingeneral,mount-iscomparativelyeasy.ingofneedlerollerbearingsHowever,non-separablebearingswithlargeinterfer-encesshouldbehandledwithgreatcare.force1MountingbypressfitSmallandmediumbearingswithsmallinterferencesrequireasmallpressing-informounting,andtheyaremountedusingapressatroomtemperature.Thebearingshouldbepressedincarefully,applyingaforceevenlytothebearingwithafittingtoolasshowninnerandinFig.26.outerringscanbemountedseparately,andthemountingworkissimple.However,wheninstallingtheshaftandinnerringassemblyintotheouterring,careshouldbetakennottodamagetheracewaysur-facesandrollingelements.Forseparablebearings,theWhenmountingnon-separablebearings,theinnerandouterringsarepressedinsimultaneouslybyapplyingacoverplateasshowninFig.27.Itmustneverhappenthattheinnerringispress-fittedtotheshaftbystrikingtheouterring,ortheouterringbystrikingtheinnerring,becausetheracewaysurfacesandrollingelementswillbescratchedorindented.Fig.27Whenpressfitting,thefrictionofthefittingsurfacescanbereducedbyapplyinghighviscosityoiloverthefittingsurfaces.Thepressing-inorpulling-outforcetobeappliedtothebearingisgivenonpageA59.forshrinkfit,andforisrecommendedas2MountingbyshrinkfittingThismethodisusedwhentheinterferenceisgreatorwhenalargebearingistobefitted.Thehousingisheatedandthermallyexpandedwhenfittingtheouterringtothehousingandtheinnerringisheatedandexpandedwhenfittingittotheshaftallowingthebear-ingtobeseteasilywithinashorttime.Themaximumallowabletemperaturefortheshrinkfitis+120°C,andPureheatingshouldbeperformedappropriately.non-corrosivemineraloiltheheatingoiltrans-formersisconsideredtobethebest.Duringcooling,theaxialdirection.thebearingalsoshrinksTherefore,thatisnoclearancebetweenthebearingandtheshoulder,anaxialforcemustbeappliedcontinuouslyithascooled.Whentheinterferencebetweentheouterringandthehousingisgreat,anexpansionfitmethodinwhichthebearingiscooledusingdryiceorothercoolingagentbeforefittingcanbeused.Immediatelyafterfitting,however,moisturefromtheaireasilycondensesonthebearing.takepre-ventivemeasuresagainstcorrosion.thebearinguntilinthereisnecessaryinsulationoilTherefore,toensuretoittoFig.26A58ABCDEFGHIJKLM
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