Are threaded rods and screw rods the same thing? The answer is (hardware) the ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repetitive force, and it has both high Features of accuracy, reversibility and high efficiency. Because of its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. The ball screw is composed of a screw, a nut, a steel ball, a pre-compression piece, a reverser, and a dustproof device. Its function is to transform rotary motion into linear motion, which is the further extension and development of Akem screw. The important meaning of this development is to change the bearing from sliding motion to rolling motion. According to the national standard GB/T17587.3-1998 and application examples, the ball screw (which has basically replaced the male-connected ball screw trapezoidal screw, commonly known as the screw) is used to convert rotary motion into linear motion; or convert linear motion into Rotating actuators have high transmission efficiency and accurate positioning.