Cema 3/32" Ceramic Balls

Cema Ceramic Balls are precision-manufactured rolling elements designed for use in compatible bearing assemblies. Made from silicon nitride ceramic, they provide an alternative to conventional steel bearing balls where material hardness, corrosion resistance and dimensional stability are important. They are intended for bearing maintenance and assembly applications rather than use as complete replacement bearings. For bicycle mechanics servicing compatible bearing systems, these ceramic balls provide individual rolling elements manufactured to meet the requirements of cycling and industrial applications.

Material performance: Silicon nitride offers high hardness, low thermal expansion and resistance to corrosion. These properties are useful in bearing applications exposed to moisture, varying temperatures or demanding operating conditions. The material also has lower density than conventional bearing steel, reducing the mass of the rolling elements. Cema produces its ceramic balls through a controlled manufacturing process involving forming, high-pressure sintering, shaping and precision grinding. This process produces spherical rolling elements suitable for applications where accurate geometry and consistent material properties are important.

Compatibility and maintenance: These balls must be matched to the original bearing assembly before installation. Check the required ball diameter, bearing race condition and suitability for ceramic rolling elements. They are not universal replacements for steel balls in every bearing system. Ceramic balls also do not automatically convert an existing bearing into a complete ceramic bearing assembly. The condition of the bearing races, appropriate lubrication and correct installation all influence the resulting performance and service life. Where bearing races are worn or damaged, replacing the complete bearing assembly may be more appropriate than replacing individual balls.