本文件规定了适用于一般工程中使用的平均相对轴承间隙ψ m为0.56的金属滑动轴承的配合系统？最多3,15？。根据特定应用中的要求，可以使用其他间隙范围。 这个适合度系统不适用于一半？轴承和衬套，由于其特殊特性，不是通过直径而是通过壁厚来测量，并且在组装时尺寸会发生变化。它不适用于异形孔或可倾瓦轴承，也不适用于通过考虑两个极端间隙的轴承性能来确定特定公差的情况。 该文献优选地适用于旋转机器部件和轴系，但也可以类似地用于其他应用范围。

This document specifies a system of fits applicable to metallic plain bearings used in general engineering for mean relative bearing clearances, ψm, of 0,56?up to 3,15?. Other clearance ranges can be used depending upon the requirements in specific applications. This system of fits is not applicable to half？bearings and bushes which, due to their special characteristics, are not measured by diameter but by wall thickness, and which are dimensionally changed on assembly. It is not applicable to profile bore or tilting pad bearings, or to cases where specific tolerances have been established by consideration of the bearing performance at both extremes of clearance. This document is applicable preferably to rotating machine parts and shafting, but it can be used similarly in other ranges of application.