• The Rx Ceramic bearings have 7 ceramic balls.

Material Composition
• Ceramic balls are silicon nitrate (1500 HV7)
• Inner and Outer raceways are 52100 carbon, chromium steel (HRC 67)
• Retainer is 6/6 Nylon special additive making it more resistant to breakage
• Pre-lubricated with Rx Lube Drops®, a low viscosity oil to reduce friction

Tolerances
• ABEC-9 rating, Ball deviation grade 5, Noise is under 31db.

Design Features
• Balls are highly polished to a mirror like finish
• Inner and outer races are highly polished to a mirror like finish.
• Raceway is optimized for the ball and raceway contact area and contact angle.
• Removable non-contact rubber shields for easy cleaning and zero friction.

Limited warranty
• 3 Years