深沟球轴承主要承受径向载荷，也可同时承受径向载荷和轴向载荷。当其仅承受径向载荷时，接触角为零。当深沟球轴承具有较大的径向游隙时，具有角接触轴承的性能，可承受较大的轴向载荷 ，深沟球轴承的摩擦系数很小，极限转速也很高。

Deep groove ball bearings are mainly subjected to radial loads and radial loads and axial loads simultaneously. The contact angle is zero when it is only subjected to radial load. When the deep groove ball bearing has larger radial clearance, it has the performance of angular contact bearing, and can bear larger axial load. The friction coefficient of deep groove ball bearing is very small, and the limit speed is high.