The left-hand and right-hand ball screw refers to a precision ball screw pair that has two left and right rotation directions on the same screw and can be opened and closed, centered and positioned through single-axis operation. The integrated ball screw is a professional automation component derived from the ball screw. This type of ball screw pair is an economical ball screw that can perform left and right opening and closing, centering, and precise positioning through single-axis operation. The thread direction of left and right-handed ball screws is generally not marked to the right, and marked to the left as "LH". This code indicates right-hand rotation; - "number of load ball screw turns", 3 turns; type of "positioning ball screw pair"; (Different from this, there is also a T-type, which represents the transmission ball screw pair). The ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotational motion into linear motion, or convert torque into axial repeated force. It also has high precision, reversibility and high efficiency characteristics. Due to its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments.