All-ceramic bearing has the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetoelectric insulation, oil-free self-lubrication, high speed and so on. Can be used in extremely harsh environment and special working conditions, can be widely used in aviation, aerospace, navigation, petroleum, chemical industry, automobile, electronic equipment, metallurgy, electric power, textile, pump, medical equipment, scientific research and national defense and other fields, is a high-tech product of new material application.

The ring and rolling body of all-ceramic bearings are made of all-ceramic materials, including zirconia (ZrO2), silicon nitride (Si3N4) and silicon carbide (Sic). Alumina materials only alumina ceramic ball, general bearing retainer usually adopt ptfe, nylon 66, acyl of polyether imide, stainless steel material, etc., and Shanghai yu continuous bearing also developed ceramic retainer, materials are: zirconia, silicon nitride, as well as keep special aviation aluminum manufacturing equipment, thereby expanding the wide application of ceramic bearing.