>> P.26
1-4BearingSelection(1)SelectionprocessInordertoselectbearingmodelsandspecifications,itisessentialtoconfirmthestructureanddimensionsofthedeviceforembeddingalongwiththeoperatingenvironmentandconditionsandtoclarifytherequiredperformance.Belowisanoverviewoftheprocessofbearingexaminationandselection.Operatingconditions/environment/requiredperformanceModelselectionOperatingconditions/environment/requiredperformance(p.28)•Devicestructureandfunction•Operatingenvironment(temperature,humidity,vibration,powder,etc.)•Load•Shaft/housingdimensionsandmaterial•Rotationspeed,rotationprecision,rotatingring•Torque•Noise•Life•Regulatedsubstances•OtherspecialenvironmentsModelselection•Bearingmaterial(p.30)•Bearingdimensions(seedimensiontablesfromp.85on)•Shield/sealstructure(p.32)•Retainer•RatingloadandlifeToleranceandclassToleranceandclass•Toleranceandtolerancevalues•MeasurementmethodsPerformanceexaminationPerformanceexamination•Internalclearance•Fits•Shaftandhousingdesign•Preload•Displacement•Torque•Vibrationduetoforcedrotation•Noise•CombinationwithresinpartsLubricantsLubricantselection26