Ceramic bearings have high temperature resistance, corrosion resistance, wear resistance, non-magnetic, electrical insulation, self-lubrication, high speed, long life and other characteristics that metal materials do not have. The rings and rolling elements are made of all ceramic materials, including zirconia (ZrO2), silicon nitride (Si3N4), silicon carbide (SiC), and aluminum oxide (AI203). The holder is made of polytetrafluoroethylene, nylon 66, polyetheryl imide, zirconia silicon nitride, stainless steel or special aviation aluminum, thus expanding the application of ceramic bearings. Such as high-speed bearings, high-temperature bearings, corrosion-resistant bearings, anti-magnetic bearings, electrically insulated bearings, etc. It has been widely used in aerospace, metallurgy and chemical industry, energy and power and other fields.