D-75 TIMKEN BRGBearing Life Calculations for Rear Wheel - D75Input DataBearing Properties (Timken)Linear Speed (Km/Hr)40AssumedTyre Rolling Rad ( mm ) (RH)372Calcualted from: http://www.club80-90syncro.co.uk/Syncro_website/TechnicalPages/TRC%20calculator.htmMean equivalent bearing load (N)Axial Radial Load (GVW) (N)52500From SpecFor inner bearing Pim24999.0133040283CG height (h)800AssumedFor outer bearing PIIm18241.8056813159Track on wheel (b)1736From SpecVehicle Lateral Aceleration (av/g)0.35AssumedMass of Vehicle wheel & tyre(N)400AssumedBearing Effictive Spread (BES)88.400Approximated from pdf fileDist. of load line to Outer brg OLL35.58CalcualtedDist. of load line to Inner brg ILL (a)52.820CalcualtedBearing Properties (Timken)Corresponding bearing Lives (in Kms)Brg.NoC90eC1 (N)YXInboard bearing LI177268.469417262Inner Brg I395S/394A237000.4916001.490.4Outboard bearing LII506774.752230452Outer Brg II395S/394A237000.4916001.490.4CalculationsStatic Hub load (K)25850m10.5975113122Kd/G0.2519685039m24.2081447964h/b ratio0.4608294931f0.05Static hub load on outer wheel Ke31853.1205776697Static hub load on inner wheel Ki19846.8794223303Axial load on outer wheel Kae8025.9831376806Axial load on outer wheel Kai5000.7885158628Case i - Zero Side Thrust - 90% time (When driving straight)Radial bearing load FrI120884.6945701357Radial bearing load FrII115843.3597285068Internal axial load FaI1 = FaII17008.2867685019Equivalent bearing load PI120884.6945701357Equivalent bearing load PII116779.6911764706Case -ii Cornering - For outside wheel ( 5% Time)Radial bearing load FrI252807.0990512408Radial bearing load FrII2-20953.978473571Internal axial load FaI217720.5030373291Internal axial load FaII29694.5198996486Equivalent bearing load PI252807.0990512408Equivalent bearing load PII222826.4260399048Case iii - Cornering - For inside wheel ( 5% of Time)Radial bearing load FrI3-9185.3072037721Radial bearing load FrII329032.1866261024Internal axial load FaI34741.5559895408Internal axial load FaII39742.3445054035Equivalent bearing load PI310739.0413059246Equivalent bearing load PII329032.1866261024

D-75-SKFBRGBearing Life Calculations for Rear Wheel - D75Input DataBearing Properties (Timken)Linear Speed (Km/Hr)40AssumedTyre Rolling Rad ( mm ) (RH)372Calcualted from: http://www.club80-90syncro.co.uk/Syncro_website/TechnicalPages/TRC%20calculator.htmMean equivalent bearing load (N)Axial Radial Load (GVW) (N)52500From SpecFor inner bearing Pim24999.0133040283CG height (h)800AssumedFor outer bearing PIIm18241.8056813159Track on wheel (b)1736From SpecVehicle Lateral Aceleration (av/g)0.35AssumedMass of Vehicle wheel & tyre(N)400AssumedBearing Effictive Spread (BES)88.400Approximated from pdf fileDist. of load line to Outer brg OLL35.58CalcualtedDist. of load line to Inner brg ILL (a)52.820CalcualtedBearing Properties (SKF)Corresponding bearing Lives (in Kms)Brg.NoC90eC1 (N)YXInboard bearing LI155091.795263188Inner Brg I395S/394A00.4880001.490.4Outboard bearing LII443376.119711816Outer Brg II395S/394A00.4880001.490.4CalculationsStatic Hub load (K)25850m10.5975113122Kd/G0.2519685039m24.2081447964h/b ratio0.4608294931f0.05Static hub load on outer wheel Ke31853.1205776697Static hub load on inner wheel Ki19846.8794223303Axial load on outer wheel Kae8025.9831376806Axial load on outer wheel Kai5000.7885158628Case i - Zero Side Thrust - 90% time (When driving straight)Radial bearing load FrI120884.6945701357Radial bearing load FrII115843.3597285068Internal axial load FaI1 = FaII17008.2867685019Equivalent bearing load PI120884.6945701357Equivalent bearing load PII116779.6911764706Case -ii Cornering - For outside wheel ( 5% Time)Radial bearing load FrI252807.0990512408Radial bearing load FrII2-20953.978473571Internal axial load FaI217720.5030373291Internal axial load FaII29694.5198996486Equivalent bearing load PI252807.0990512408Equivalent bearing load PII222826.4260399048Case iii - Cornering - For inside wheel ( 5% of Time)Radial bearing load FrI3-9185.3072037721Radial bearing load FrII329032.1866261024Internal axial load FaI34741.5559895408Internal axial load FaII39742.3445054035Equivalent bearing load PI310739.0413059246Equivalent bearing load PII329032.1866261024

Sheet3