Ball Screw, particularly for steering of motor vehicle, has ball screw spindle, ball screw nut, bearing for ball screw spindle and bearing for ball screw nut

摘要

The ball screw (10) has a ball screw spindle (11), a ball screw nut (12), a bearing for the ball screw spindle and a bearing (15) for the ball screw nut. A thin film of a diamond-like carbon layer is coated in a region (16), where frictional forces or surface pressure forces or relative movements, particularly very small relative movements take place between individual components of the ball screw. A track of the ball screw spindle is coated with the film on the first rolling elements pass. An independent claim is included for a steering for the motor vehicle.