What is the close relationship between preloading and accuracy of ball screws

1、The preload is the pressure applied between the ball screw and the ball to stabilize the ball’s movement on the guide rail during assembly. The size of the preload affects the accuracy of the ball screw in the following ways:

2、Return error of the ball screw: Return error refers to the deviation when the ball screw returns to the same position. Proper preload can reduce return error and improve the accuracy of the ball screw.

3、Rotation accuracy of the ball: The size of the preload can affect the rotation accuracy of the ball during operation. Proper preload can improve the rotation accuracy of the ball, thereby improving the accuracy of the ball screw.

4、Clearance between the ball and the guide rail: Preload can make the ball run more stably on the guide rail, thereby reducing the clearance between the ball and the guide rail, and improving the accuracy of the ball screw.

Proper preload can reduce return error, improve the rotation accuracy of the ball, reduce the clearance between the ball and the guide rail, and improve the accuracy of the ball screw. When assembling the ball screw, it is necessary to determine the appropriate preload based on factors such as the length, diameter, and load of the ball screw to ensure the accuracy and stability of the ball screw.