According to different materials, linear bearings can be divided into metal linear bearings and plastic linear bearings, and linear bearings are used with quenched linear transmission shafts. A system of infinite linear motion. Due to the point contact between the load ball and the quenched drive shaft, the allowable load is small, but when moving in a straight line, the frictional resistance is small, the precision is high, and the moving speed is fast. However, in the process of use, it often leads to the failure of the linear bearing.
