节圆直径
- 网络Pitch Diameter;pitch circle diameter;pcd;P.D.
节圆直径-
轴向负荷积分Ja（ε1ε2）与负荷偏心距的节圆直径比率2e/D（pw），采用最小二乘法非线性回归的拟合方式，列出了转盘轴承的额定静负荷计算方程式。
Based on the ratio of axial load integral Ja (ε 1 ε 2 ) to pitch diameter of load eccentricity 2e / Dpw , using nonlinear regression of least-squares procedure , an equation for calculating static load rating of turntable bearings is given in this paper .