>> P.50
A47Table30Clearancebetweengroovedshaftandhousingbore unit:mmShaftdia.Incl.50mmOver50mmClearance0.25〜0.40.5〜1Fig.17Fig.183LabyrinthAlthoughitisalittledifficulttomake,thelabyrinthisveryeffectiveinpreventingoilleakageespeciallyathighspeeds.Atlowspeeds,fillingthelabyrinthwithgreaseiseffectiveinpreventingtheentryofdust.InFig.17,itisnecessarytosplitthehousingorcoverplateintotwo.InFig.18,itiseasytoassemble,andifcombinedwithanoilseal,itimprovesthesealingeffect.Table31showsthelabyrinthclearancesgenerallyused.Table31Labyrinthclearance unit:mmShaftdia.Incl.50mmOver50mmClearance0.25〜0.40.5〜11〜23〜5RadialdirectionAxialdirection(1)(2)2FlingerTheoilflingerisadiskattachedtotheshaftwhichthrowsoffoilduetothecentrifugalforceofrotationandthuspreventsoilleakageandtheentryofforeignparticles.Fig.16(1)showsanexampleinwhichtheflingerislocatedinsidethehousing,mainlytopreventoilleakage.Sinceitsucksindustanddirt,itshouldbeusedinadustfreeenvironment.Fig.16(2)showsanexampleinwhichtheflingerislocatedoutsidethehousing,andisusedincombinationwithanothersealingdevice,toprevententryofforeignparticles.Fig.15Fig.16(1)(2)
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