>> P.39
StaticequivalentradialloadP0rStaticequivalentradialloadisdefinedas"thestaticradialloadwhichgeneratescontactstressequaltothecontactstressgeneratedunderactualloadconditionsatthecontactcenteroftheballandracewayundermaximumload."Thelargervaluecalculatedwiththefollowingformulaisused.P0r=X0Fr+Y0FaP0r=FrX0,Y0:fromJISB1519DeepgrooveballbearingcoefficientX0=0.6Y0=0.5Fr:Radialload(N)Fa:Axialload(N)LoaddistributiontobearingsConsideringtheshaftsystemasstatictensionsupportedbybearings,distributetheloadactingonitamongthebearings.Forexample,inFig.6-1,theradialloadonbearingsAandBcanbesimplyexpressedbyformulas(1)and(2).39FrAFrBFI,FII:Radialload(N)onbearingA:Radialload(N)onbearingB:Radialload(N)ontheshaftsystemabdc+dcc+dFⅡFⅡ×FⅠ+×FⅠ+(1)FrA=a+bbab(1)FrB=-BearingBFrBBearingAFrAcFig.6-1FIIdFI
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