齿轮公差关系式与计算式：1、切向综合公差：F’i=Fp+ff2、一齿切向综合公差：f’i=0.6（fpt+ff）3、径向综合公差：F”i=1.4Fr4、螺旋线波度公差：ffβ=f’icosβ（β为分度圆螺旋角）5、轴向齿距极限偏差：FPX=Fβ6、接触线公差：Fb=Fβ（按接触线长度查表）7、基节极限偏差：fpb=fptcosα（注:国际标准ISO1328-1975的f’i的计算式为f’i=fpt+ff。GB10095-88已经对其进行压缩。）极限偏差及公差与齿轮几何参数的关系式：精度等级FPFr（按较小值）FwA+CAm+B+CB=0.25AAm+B+CB=1.4AB+CACACACBC10.250.630.2442.80.11.20.0831.3220.410.3554.50.161.80.132.130.631.60.567.10.2530.213.4412.50.9011.20.44.80.345.451.641.40180.637.50.548.762.56.32.24281120.871473.5593.15401.4171.2219.48512.54501.75211.72797.118563--2.4381010256.380--3.353111435.58100--4.77412205010125--6.5104精度等级fPtffF”iFβAm+B+CB=0.25AAm+Bd+CB=0.0125AAm+B+CB=0.25AA+CACACACAC10.0630.80.0632--0.3151.620.11.250.12.5--0.40230.1620.163.15--0.502.540.253.150.2540.455.60.633.1550.4050.450.6380.8460.6380.636.30.911.21570.9011.2181.25161.256.381.25161.6101.822.421091.822.42.5162.24283.1516102.531.54252.835.5525113.55456.3403.55458401256310634.55612.563（注：d-齿轮分度圆直径；m-模数；b-齿宽；L分度圆弧长。）
