The main advantage of silicon nitride balls compared to steel balls is:
1, weight is 59% lower than the steel ball, greatly reduces the centrifugal force, rolling and wear of the bearing at high speed and acceleration operation;
2, the elastic modulus is 44% larger than steel, which means that the deformation amount is greatly reduced in the stress;
3, the hardness is higher than steel, HRC reaches 78;
4, small friction coefficient;
5, the coefficient of thermal expansion is 1/4 of steel and can withstand temperature dramatic;
6, easy to get almost perfect surface finish, RA can reach 4 ~ 6 nm;
7, high temperature resistance: silicon nitride ceramic balls still have high strength, hardness at high temperatures at 1050 掳 C;
8, never rust, you can work under oil-free lubrication;
9, more chemical corrosion than steel;
10, no metal pollution;
11, no magnetic;
12, electrical insulation.
13, there is no adhesion wear;

Scope of application:
Silicon nitride ceramic ball can be used in various bearings with limit performance requirements: high speed / ultra-high speed bearing, high precision bearing, vacuum bearing, high / low temperature bearing, non-magnetic bearing and high precision ball screw; It can also be used as valve ball, swimming valve, fixed valve and measuring ball in chemical pump, high temperature pump and metering pump.
Silicon nitride ceramic balls are generally assembled into hybrid bearings, which can be used in high-tech industries such as aviation, national defense and other industries. They can also be widely used in chemical industry, metallurgy, medical treatment, food, oil field, electronics and other industries.