本文件规定了径向滚针和保持架组件的外形尺寸。 此外，本文件给出了保持架宽度的公差以及滚针直径的功能测量方法。 轴滚道、外壳滚道和滚道宽度的公差信息值见附录A。 径向滚针和保持架组件的功能测量见附录B。

This document specifies the boundary dimensions for radial needle roller and cage assemblies. In addition, this document gives the tolerances for the cage width and method of functional gauging of bore diameter of needle roller complement. Informative values for the tolerances of shaft raceway, housing raceway and raceway widths are given in Annex A. Functional gauging of radial needle roller and cage assembly is given in Annex B.