ISO 12240的本部分规定了角接触径向球面滑动轴承的尺寸和公差。 在进行任何涂层或电镀之前，规定的公差值适用于精加工的角接触径向球面滑动轴承。 角接触径向球面滑动轴承无需符合图示设计，但需要符合规定的尺寸和公差。 注:ISO 12240的本部分不包括用于机身应用的角接触径向球面滑动轴承。

This part of ISO 12240 specifies dimensions and tolerances for angular contact radial spherical plain bearings. The specified tolerance values apply to finished, angular contact radial spherical plain bearings before any coating or plating. Angular contact radial spherical plain bearings need not conform to the design illustrated but compliance is required as regards dimensions and tolerances specified. NOTE — Angular contact radial spherical plain bearings for airframe applications are not covered by this part of ISO 12240.