Specifications ceramic ball
Excellent and high quality control
Fast delivery
Competitive price
Small order accepted
Compared with steel ball, Si3N4 ceramic ball has following advantages: 1. 59% lighter than steel ball, which means less centrifugal force and less wear on the groove during high speed and acceleration. 2. 44% larger elastic modulus, which means less deformation under load 3. Harder with Rockwell hardness as 78 4. Smaller friction coefficient 5. Only 1/4 coefficient of thermal expansion of steel, can endure sharp fluctuation of temperature 6. Superior surface finish can be achieved, Ra could be 4~6 nm 7. Can endure high temperature with high hardness and strength up to 1050°C 8. Never rust, and can roll without lubrication. 9. More corrosion resistant than steel. 10. Free of metal contamination. 11. Non-magnetic 12. Electric isolation 13. No adhesive-wear with metal 14. Contact angular is very large with molten and nearly no reaction All above combination makes Si3N4 to be first choice for high-demand bearing ball material and valve ball