Compared to steel balls, the main advantages of silicon nitride
balls are:
1. Lighter than steel balls by 59%, greatly reducing the centrifugal
force, rolling, and wear on the channel during high-speed and
accelerated operation of the bearings;
2. The elastic modulus is 44% higher than that of steel, which means
that the deformation under stress is significantly reduced compared
to that of steel balls;
3. The hardness is higher than that of steel, with an HRC of 78;
4. Low friction coefficient;
5. The coefficient of thermal expansion is 1/4 of that of steel and
can withstand temperature fluctuations;
6. Easy to achieve high surface smoothness, Ra can reach 4-6
nanometers;
7. High temperature resistance: Silicon nitride ceramic balls still
have high strength and hardness at a high temperature of 1050 ° C;
8. Never rust, can work under oil-free lubrication conditions;
9. More resistant to chemical corrosion than steel;
10. No metal pollution;
11. Non magnetic;
12. Electrical insulation.
13. There is no adhesive wear;
The combination of these excellent properties makes silicon nitride
the preferred material for high-performance bearing rolling
elements.
● Purpose:
Silicon nitride ceramic balls can be used for various bearings with
extreme performance requirements: high-speed/ultra high speed
bearings, high-precision bearings, vacuum bearings, high/low
temperature bearings, non-magnetic bearings, high-precision ball
screws; It can also be used as a valve ball, floating valve, fixed
valve, and measuring ball in chemical pumps, high-temperature pumps,
and metering pumps.
Silicon nitride ceramic balls are generally assembled into hybrid
bearings and can be applied in high-tech industries such as aviation
and national defense, as well as in other industries such as
chemical, metallurgical, medical, food, oil fields, and electronics.
● Company product features: Stable product performance and good
consistency.
● Diameter specifications: Ф 0.4mm~ Ф 140mm