Wear resistance refers to the ability to maintain its original accuracy for a long time. The main influencing factors are material heat treatment, bearing type and lubrication mode. Spindle components must have enough wear resistance to maintain long-term accuracy. In order to improve the wear resistance, the corresponding parts of the spindle should be hardened or nitrided to improve its hardness and wear resistance. Spindle bearings also need good lubrication to improve their wear resistance.