Ball Screw is made of screw and ball nut . It's function is to turn the rotary motion into linear motion, which is a future extension and development of ball screw. The significance of the development is to move into a rolling bearing from sliding action. With less frication. Ball Screw are widely used into various industrial equipment and precision instruments.
Ball screw are used in aircraft and missiles to moving control surfaces, especially for electric fly by wire and in automobile power steering to translate rotary motion from an electric motor to axial motion of the steering rack . Ball screw also used in machine tools, robots and precision assembly equipment .High precision ball screw are used in steppers for semiconductors manufacturing