>> P.65
AsshowninFig.13-3,whenload(Fa)isappliedintheaxialdirectionfromtheinitialcontactangle,theformulashowingtherelationshipofthecontactangle(α)andinitialcontactangle(α0)isasbelow.2FaZࢫDw2ࢫsinαcosα0cosα=1+cࢫDw(ri+re-Dw)0102030405060708090100Axialload(N)0.030.0250.020.0150.010.0050Axialdisplacementamount(mm)δarireαα0δaδnDBriFaFig.13-3Fig.13-4Calculationexampleofaxialdisplacementamountfor608ZZduetoaxialloadConsultMinebeaMitsumiforcalculationofthedisplacementamountforeachmodel.65α0=cos-11-Gr2(ri+re-Dw)GrrireDw:Radialclearance:Innerringgroovecurvatureradius:Outerringgroovecurvatureradius:Balldiameter•Relationshipoftheinitialcontactangle(α0)andcontactangle(α)Whenoneracewayringismovedintheaxialdirectionuntiltheclearancedisappears,theinitialcontactangle(α0)asshowninFig.13-3iscalculatedasbelow.AxialdisplacementTheaxialdisplacementamount(δa)whenaxialload(Fa)isappliediscalculatedasbelow.1sinαDw2aZFδa=(ri+re-Dw)(sinα-sinα0)+C:Contactmodulus
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