ISO 230-7:2015旨在标准化机床旋转轴几何精度的规范和测试方法。机床的主轴单元、旋转头、旋转台和转台构成旋转轴，由于多个误差源，它们在空间中都有意外的运动。 ISO 230-7:2015涵盖了旋转轴的以下特性: -旋转轴误差运动； -速度引起的轴移动。 旋转轴的其他重要特性，如热引起的轴位移和环境温度变化引起的轴位移，在ISO 230？3中有论述。 ISO 230-7:2015未涵盖主轴的以下特性: -角度定位精度（见ISO 230-1和ISO 230-2）； -表面和组件的损耗（见ISO 230-1）； -刀架接口规范； -惯性振动测量（见ISO/TR 230-8）； -噪声测量（见ISO 230-5）； -转速范围和精度（见ISO 10791-6和ISO 13041-6）； -平衡测量或方法（见ISO 1940-1和ISO 6103）； -空载损耗（功率损耗）； -热效应（见ISO 230-3）。

ISO 230-7:2015 is aimed at standardizing methods of specification and test of the geometric accuracy of axes of rotation used in machine tools. Spindle units, rotary heads, and rotary and swivelling tables of machine tools constitute axes of rotation, all having unintended motions in space as a result of multiple sources of errors. ISO 230-7:2015 covers the following properties of rotary axes: - axis of rotation error motion; - speed-induced axis shifts. The other important properties of rotary axes, such as thermally induced axis shifts and environmental temperature variation-induced axis shifts, are dealt with in ISO 230？3. ISO 230-7:2015 does not cover the following properties of spindles: - angular positioning accuracy (see ISO 230？1 and ISO 230？2); - run-out of surfaces and components (see ISO 230？1); - tool holder interface specifications; - inertial vibration measurements (see ISO/TR 230？8); - noise measurements (see ISO 230？5); - rotational speed range and accuracy (see ISO 10791？6 and ISO 13041？6); - balancing measurements or methods (see ISO 1940？1 and ISO 6103); - idle run loss (power loss); - thermal effects (see ISO 230？3).