Qingdao Fuqin can provide black and gray silicon nitride ceramic balls, and the highest grade can be G3, G5. Because silicon nitride ceramic balls have the characteristics of corrosion resistance, high strength, and non-magnetic properties, they are widely used in many fields.

1. Used in transfer devices in high temperature equipment

The excellent high temperature resistance of Si3N4 ceramics ball makes its strength and hardness almost unchanged at 800°C, while the hardness of bearing steel decreases significantly when it exceeds 120°C.

2. Used in high-speed operation field, high-speed electric spindle bearings, machine tool spindle bearings, dental drill bearings, and instrumentation bearings

The density of Si3N4 ceramics is 3.20g/cm3, which is much lower than that of bearing steel 7.85g/cm3, so ceramic balls can effectively resist the centrifugal force generated by high-speed rotation and reduce the load on rolling elements. At the same time, it can reduce the rotational sliding between the rolling element and the raceway, which plays a beneficial role in preventing surface damage. Ceramic ball bearings do not need to add lubricating grease frequently, and the characteristics of sensitive rotation, fast start, good inertia and long life have been fully reflected.

3. Used in aviation and aerospace fields

The linear expansion coefficient of Si3N4 ceramics is 3.2*10-6/K, which is almost 1/4 of that of bearing steel, so Si3N4 ceramic ball bearings are more stable in environments with temperature changes. For example, ceramic balls exhibit excellent performance in ultra-low temperature environments and are candidates for bearings in a new generation of hydrogen engines.

4. Ceramic ball bearings can solve corrosion problems. So are widely used in chemical machinery and equipment, food, marine and other fields.

5. Used in High vacuum field

The self-lubricating properties of Si3N4 ceramic balls can solve the vacuum pollution caused by the lubricating medium used in steel bearings.

6.Used in strong magnetic field environment

In the strong magnetic field environment, the metal powder from the wear of the steel bearing itself is firmly adsorbed between the rolling elements and the raceway surface, which will cause early peeling damage of the bearing and increase in noise. Ceramic ball bearings can solve this problem very well.

7. Used in civilian products such as bicycles, roller skates, model airplanes and electric toys

With its advantages of being lighter, more wear-resistant and faster, ceramic ball bearings are widely used in the fields of bicycles, roller skates, model airplanes and electric toys, and are especially loved by top players in these fields.