1. High rigidity, high strength and high hardness. 2. Extremely strong corrosion resistance, can be used in strong acid and strong alkali. 3. High temperature resistance, silicon nitride ceramic ball can be used normally in the environment below 1000 â. 4. Low density (3.2g/cm3), about 60% lighter than steel balls, reducing wear and noise.
5. Low coefficient of pansion (3.2x10-6/K), almost 1/4 of that of bearing steel, able to withstand sharp changes intemperature.
6. Self-lubricating, can solve the pollution caused by the lubricating medium and the inconvenience of adding, and can be used under vacuum and high temperature. 7. Chemical resistance, high mechanical strength. Application fields: high temperature bearings, corrosion-resistant bearings, chemical pumps, ceramic valve balls.