Ceramic Bearing Balls

Ceramic bearing ball can be used for high temperature, corrosion resistance, insulation, no magnetic, no lubrication and other occasions. It is the ideal material to replace the steel ball in corrosive occasions. As a valve ball, ceramic bearing ball has been successfully used in high pressure homogenizer, diaphragm pump, metering pump, oil field pump, high pressure spray gun and other equipment.

Types of Ceramic Bearing Ball

Zirconia Ceramic Bearing Ball
Silicon Nitride Ceramic Bearing Ball
Alumina Ceramic Bearing Ball


1.High Hardness

They normally have a very high hardness (70-90 HRc) and elastic, or Young’s, modulus. This means they are resistant to shape change when loads are applied along with improved wear characteristics.

2. Lightness

Ceramic balls are 60% lighter than steel balls. This results not only in a lighter bearing overall, but also creates less centrifugal force inside the bearing, improving its performance.

3. High Corrosion Resistance

Ceramics are non-metallic, nonferrous materials. They don’t corrode in the same way as metals when exposed to water and other hazardous chemicals. Their high degree of corrosion resistance allows them to perform excellently in wet and chemically-corrosive environments.

4. Smoothness and Roundness

Ceramic balls have a smoother finish than steel. That affects directly in the roundness with grades up to 25/1,000,000 of an inch of accuracy. This reduces vibrations and a uniform contact between ball and ball surface will improve lifespan of the bearing.

5. High Rigidity

The compressive strength of ceramic materials is about 5 to 7 times that of steel.


The development of synthetic engineering ceramics in the 1960s and 1970s led to high-performance silicon nitride ceramic bearing balls becoming the state of the art for use in such diverse applications as jet engines, machine tool spindles, electric motors, Formula 1 racing cars, pumps, etc.

Why Choose Us

1. Corrosion resistance, acid, alkali, sea water can also be used.

2. High temperature resistance, zirconia ceramic ball at 700℃, strength, hardness almost unchanged.

3. No magnetic conductivity, can also be used in magnetic field;Insulation, not conductive.

4. Light weight, 1/3 lighter than ordinary bearings, its density is 6.00g/cm3.

5. High rigidity, high hardness, its hardness is 1/2 times higher than bearing steel, elastic modulus 210.

6. High expansion rate: the linear expansion coefficient of zirconia ceramic ball is 10.5×10-6/℃, the thermal expansion rate is close to metal, and can be used in combination with metal.

7. Zirconia ceramic ball self lubrication can solve the lubrication medium caused by pollution and add inconvenience.