ISO 15242的本部分规定了在既定试验条件下，接触角小于等于45°的双列径向球面滚子轴承、单列和双列径向圆锥滚子轴承的振动测量方法。它包括双列径向球面滚子轴承，以及带有圆柱孔和外表面的单列和双列径向圆锥滚子轴承。

This part of ISO 15242 specifies vibration measuring methods for double-row radial spherical roller bearings and single-row and double-row radial tapered roller bearings, with a contact angle up to and including 45°, under established test conditions.It covers double-row radial spherical roller bearings as well as single-row and double-row radial tapered roller bearings with cylindrical bore and outside surface.