Bearing Installation and Maintenance Instructions

AP™BearingInstallationandMaintenanceInstructionsInboardApplicationsIntroductionThisinstructionbookrepresentstherecommendationsofTheTimkenCompany.Itisaguidetothepropercareandprocedurethatshouldbefollowedfortheinstallation,lubricationandmaintenanceofTimken®taperedrollerbearingsasappliedtoinboardapplications.ATimkentaperedrollerbearingcorrectlyappliedandproperlylubricated*willhavethebestopportunityofgivingreliable,trouble-freeservice.Theperiodicattentionrecommendedshouldbescheduledforconve-niencewithotherphasesofequipmentmaintenance.Generalinformationfromanyrailroadgoverningbodyshouldtakeprecedenceoverandsupplementthisinstructionalbookletforrollerbearingsoperatedunderthejurisdictionofthatgoverningbody.*Timken®AP™railjournalbearingsareprelubricatedatthefactory.Noadditionallubricationisrequired.PleasecontactyourTimkenrepresentativeifspecializedequipmentisusedthatmayrequireadditionallubricantorsubsequentlubricantinservice.WARNING:Properbearingmaintenanceandhandlingpracticesarecritical.Failuretofollowcorrectinstallationinstructionsandtomaintainproperlubricationcanresultinequipmentfailure,creatingariskofseriousbodilyharm.AP™BearingInstallationandMaintenanceInstructionsInboardApplicationsTableofContentsGeneralInformationNomenclature3BearingInstallationandRemovalEquipment4BearingorWheelPresses4PortableFixtures6Axles7ApplyingtheBearings8PressingtheBearingAssembliesonAxles10CheckingBearingLateralPlay10ApplyingWheels11VentFittings11BearingRemoval12TruckAssemblyandDisassembly13ServiceInspectionGeneral14LooseSeals14BearingRunningTemperature14GreaseLeakage14LubricantContamination15DisplacedAdapters/Housings15AccidentDamage15ShopPracticeTruckDisassembly16WheelTurning16WheelRenewal16ElectricWelding16StorageEquipmentwithRollerBearingsApplied17WheelandAxleAssemblieswithRollerBearingsApplied17RollerBearingAssembliesandComponentParts18ShippingRollerBearingAssembliesandComponentParts19OverseasShippingInstructions20GeneralInformationOUTERCONEANDROLLERASSEMBLYINNERCONEANDROLLERASSEMBLYHDLSEALSEALWEARRINGBEARINGCUPFRAMEADAPTERSTOBEAPPLIEDTOBEARINGAFTERBEARINGISPRESSEDONAXLECONESPACERHDLSEALSEALWEARRINGWHEELHUBHOUSINGCUPTHRUSTSHOULDERSFigure1TypicalinboardtruckapplicationwithHDLseals.OUTERCONEANDROLLERASSEMBLYINNERCONEANDROLLERASSEMBLYRUBBING-TYPESEALSEALWEARRINGBEARINGCUPRUBBING-TYPESEALSEALCASESEALWEARRINGHOUSINGCUPTHRUSTSHOULDERSFRAMEADAPTERSTOBEAPPLIEDTOBEARINGAFTERBEARINGISPRESSEDONAXLESEALCASECONESPACERWHEELHUBFigure2Typicalinboardtruckapplicationwithrubbing-typeseals.PRESSRAMASSEMBLYSLEEVEWHEELSEATBEARINGSEATCONEANDROLLERASSEMBLYBEARINGCUPCONESPACERHDLSEALSEALWEARRINGASSEMBLYSLEEVERAMPILOTSLEEVEHEXBOLTROLLERBEARINGASSEMBLYBEARINGCUPHDLSEALSEALWEARRINGASSEMBLYSLEEVEPRESSRAMPILOTSLEEVEROLLERBEARINGASSEMBLYBEARINGCUPHDLSEALSEALWEARRINGBearingInstallationandRemovalFigure3–SeparateSleevemethodofapplyingrollerbearingstoanaxle.Figure4–TelescopingSleevemethodofapplyingrollerbearingstoanaxle.BearingInstallationandRemovalEquipmentTimkenAP™Bearingsmaybeinstalledorremovedwithabearingpress,wheelpressorwithportablefixtures,dependingonproductionrequire-ments.Toensurethatbearingsareproperlyseated,bearingorwheelpressesshouldbeequippedwithreliefvalvessothatthespecifiedpres-surecanbemaintainedforashortinterval.Bearingsmaynotbeproperlyseatediftherequiredpressureisnotobtainedduringthesurgeofthepresswhenthebackingring/sealwearringofthebearingcontactstheaxleshoulder.BearingorWheelPressesBearingpressesorwheelpressesshouldbecheckedwithaloadcelltobesurethattherampressure,asindicatedbythegauge,iscorrectinthetonnagerangeandforthepistontravelrequiredforapplyingrollerbearingstoaxles.Whenrollerbearingsareappliedinabearingorwheelpress,thefollow-ingmaybeused:•Pilotsleevesfastenedtotheendoftheaxleandseparateassemblysleeves,asshowninFigure3.•Telescopingpilotandassemblysleevesfasteneddirectlytotheramofthepress,asshowninFigure4.•DetailsofseparateassemblysleevesareshowninFigure5.•AssemblysleevebeingusedtomountabearingisshowninFigure6.PRESSRAMASSEMBLYSLEEVEWHEELSEATBEARINGSEATCONEANDROLLERASSEMBLYBEARINGCUPCONESPACERHDLSEALSEALWEARRINGTOSUITHANDLINGSLOTSLOCATEDDIAMETRICALLYOPPOSITEROUNDSHARPEDGESINSIDEANDOUTSIDE.WELDALLAROUND.FIGURE4:ASSEMBLYSLEEVEDETAILSCAPMATERIAL-STEEL-TEMPERTO190-242BRINELL.FINISHALLOVER.BREAKSHARPCORNERSUNLESSOTHERWISEINDICATED.SLEEVEMATERIAL-STEELTUBING.FINISHALLOVER.BREAKSHARPCORNERSUNLESSOTHERWISEINDICATED.R1—23”12”RDIA.DABC”1—8”3—4”1—16”1”1—2”R1—2”1—8”CHAMFERONSLEEVEANDCAP.x1—4”1—4”DIA.DIA.DIA.R1—32”R1—32”BearingInstallationandRemovalFigure5Assemblysleevedetails.ClassandSizeABCDD(51/2x10)53/16”5.707”6”53/4”D–ShortCup53/16”5.707”6”53/4”E(6x11)511/16”6.207”61/2”61/4”E–ShortCup511/16”6.207”61/2”61/4”F(61/2x12)63/16”6.832”71/8”6/78”F–ShortCup63/16”6.832”71/8”6/78”Table1Figure6Bearinginstallationusingassemblysleeve.DImENSIONSFORASSEmBlySlEEvEThefixturesrequiredforremovingabearingwithabearingpressorwithawheelpressareshownwithFigure7.Theadaptershoeandreachrodsrequiredtoattachthefixturetothebearingpressorwheelpressshouldbedesignedtosuitthespec