Advantages and uses
There is a certain gap between the traditional hole and the shaft with relative motion, and the friction coefficient between the hole and the shaft is relatively large. After the steel ball is used to retain the ring, the shaft and the hole are not in direct contact, but through a small amount of interference in the middle. The steel ball, therefore, has high motion accuracy, rolling friction instead of dynamic friction, flexible rolling, low friction coefficient, and long service life. When there is both rotation and movement, the shaft sleeve without oil or oil is used to match the shaft, although it can It is satisfied, but the motion accuracy is low. Rolling bearings can only meet the relative rotation of the shaft, while the steel ball retaining ring meets the above two conditions. It has been widely used in cold die rolling die sets, high-precision machine tools, Machine tool accessories and occasions requiring high-precision axial or radial simultaneous movement.
