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 1050ºC.
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.
All above combination
makes Si3N4 |
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