Roller Bearings

Roller Bearing Balls for Aerospace Applications

Cerbec^® silicon nitride balls outperform traditional all steel bearing balls due to the tailored material properties and finishing that maximize the benefits of using ceramics — making Cerbec balls valuable in applications where steel balls degrade rapidly or where electrical insulation is a necessity.

CoorsTek can engineer precision Cerbec^® Balls for size ranges from micro-bearings in dental drills to large-application bearings in wind turbines, with a diameter range from 0.5 mm (0.02in) to 50 mm (2in).

Ideal for:

• Flight control components
• Gas turbine engines
• Main landing gear wheels
• Precision motion control components
• Wing flaps and slats ballscrew actuator 

Material

Cerbec^® Balls are manufactured out of CoorsTek silicon nitride. This tough ceramic has unique material properties that outperform traditional steel alloys.

• 121% Harder
• 68% Stiffer
• 76% Lower thermal expansion
• Electrically and corrosion resistant

Finish

CoorsTek produces ceramic balls with exceptionally tight tolerances and smooth surfaces. The excellent surface finish allows Cerbec^® Balls to improve overall performance.  

• Decreased friction
• Lower lubrication required
• Reduced wear
• Vibration elimination

Service

The combination of superior material and finish deliver better overall service life than traditional steel balls. Additionally, Cerbec^® Balls are used in harsh duty applications, including corrosive environments and high operating temperatures that would rapidly degrade steel balls.

• Reduced operating costs
• Limited maintenance
• Higher reliability
• Longer part life