The ball screw is an ideal product for converting rotary motion into linear motion, or vice versa, converting linear motion into rotary motion.

A ball screw consists of a screw shaft, nut, steel balls, preload washers, reversers, and dust seals. Its function is to convert rotational motion into linear motion, which is a further development and extension of the Acme screw. The significance of this development lies in transforming the bearing's rolling action into a sliding action. Due to its very low friction resistance, the ball screw is widely used in various industrial equipment and precision instruments.