Zirconia all-ceramic bearings have non-magnetic electric insulation, wear resistance, corrosion resistance, oil-free self-lubrication, high temperature resistance, low temperature resistance, etc., can be used for extreme evil and special working conditions, the highest temperature resistance 800 °, the disadvantage of smaller load, according to the installation of the fit requirement is high.
Silicon carbide is an inorganic non-metallic material. Silicon carbide has high hardness, high wear resistance, low coefficient of friction, strong oxidation resistance, good thermal stability, low coefficient of thermal expansion, thermal conductivity, as well as resistance to thermal shock and chemical resistance and other excellent characteristics. Silicon carbide is widely used in a variety of requirements for wear-resistant, corrosion-resistant and high-temperature machinery and equipment, the highest temperature resistance of 1000 °, the disadvantage of the load is small, high requirements for the installation of the fit.