Material Composition: 7 Steel balls are 52100 carbon, chromium steel (HRC 67) Inner and Outter 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.