In order to increase rigidity and rotation accuracy,to control the revolution and rotation slip of the rolling elements,the certain preload should be applied on a high speed angular contact ball bearing.

• 提高主轴刚性和旋转精度 ,控制滚动体的公转和自转打滑 ,应对高速精密角接触球轴承施加一定的预紧载荷。