Silicon nitride ceramic balls are precision ceramic products sintered at a high temperature in a non-oxidizing environment. They have the characteristics of acid and alkali resistance and corrosion resistance. They can not only be used for a long time in seawater, but also have excellent insulation and self-lubricating properties, so they can be used to the environment with no lubricating medium and high pollution. At 800°C, the strength and hardness of the silicon nitride ceramic balls are almost unchanged; the density is 3.20g/cm3, and the weight is almost 1/3 of the weight of the bearing steel. The centrifugal force is small during rotation and high-speed operation can be achieved. Therefore, Si3N4 ceramic balls can be the first choice for ceramic bearings and hybrid ceramic bearings to a large extent, and they also play an important role in the field of ultrafine grinding.

Silicon nitride bearing balls can be used in high-speed bearings, precision bearings, vacuum bearings, high/low temperature bearings, non-magnetic bearings, precision ball screws, and can also be used in chemical pumps, high temperature pumps, metering pumps as valve balls, measuring balls, etc.