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4-1TechnicalTerminologyApplicationsandusagemethodsPreloadRadialloadAxialloadLifeFitdmnvalueNRROStartingtorqueRoatingtorqueRigidityTheaxialloadappliedinadvancetobearingsinordertoenhancerigidityandsuppressrunoutandimpactLoadappliedinradialdirectionLoadappliedinaxialdirectionTotalnumberofrotationsortimeuntilthebearingisunabletoperformitsfunctionCombinationofshaftandinnerringinnerdiameterorhousingandouterringouterdiameterProductofpitchcirclediameterandrotationspeedNon-repetitiverunoutTorquewhenthebearingstartsrotationTorquewhenthebearingisrotatingDegreetowhichdisplacementanddeformationareunlikelytooccurwhenforceisappliedtothecomponentelementsInherentvibrationInballbearings,vibrationwiththeballsactingasspringsVibrationfrequencyThevibrationuniquetothebearingCoggingResistance(catching)whenthebearingisstartingSubsideamountWidthdimensionoftheinnerandouterringoverlappingpartduringpreloadSurfacepressureTotalloadMisalignmentForceperunitofsurfaceareainthecontactareaoftheballsandracewaysurfaceThecompositeofradialandaxialloadsEmbeddingerrorofbearingintodevice126