Thanks to their hardness, their low density and their excellent physical and mechanical strength, there are many advantages of using ceramic balls and various applications such as high speed bearings, valves, measure tools … As tungsten carbide balls are much denser, they are often used as control balls.

Raw materials

The choice of the raw material is based on the required physical and mechanical properties. Please find below the main characteristics of ceramic, tungsten carbide and other hard balls. However do not hesitate to contact us if you have specific demands for special alloys that are not mentioned.

Raw materials table (PDF)
Standard diameters

These kinds of precision balls are quite expensive compared to metal or plastic balls due to raw material cost. Hard balls can commonly be found in small diameters but we are able to offer the same diameters as metal balls or smaller ones. Do not hesitate to contact us.

Standard diameters table (PDF)


The high hardness of these balls enables us to obtain high precision: grade 10 or 24 according to the following standard:

– DIN 5401 standard (the German standardization system)
– ANSI/ABMA standard (the American standardization system)
– ISO 3290 standard (the European standardization system)

No matter what standard is used, the essential control points are the same because all standards have equivalences.

Standard DIN 5401 (PDF)
Standard ANSI/ABMA (PDF)
Standard ISO 3290 (PDF)