Zero Ceramic bearings are the ultimate race day weapon. Oversized Grade 3 balls roll on races which are ground to a mirror finish after receiving Magnetite and then Cryogenic treatments for hardness and longevity, and slippery Silicone seals to produce minimum resistance.

• All measurements are in millimeters
• ABEC 5 precision cartridge bearing
• CERBEC USA Grade 3 Si3n4 Silicon Nitride balls
• 52100 high carbon Chromium alloy races
• Races receive 3 cryogenic treatments and a rust proof Magnetite finish
• "VV" type 2-lip non-contact Silicone labyrinth seals
• Nylon/graphite retainer

Specifications:

• Bearing I.D. (mm): 15
• Manufacturer Number: 6902
• Bearing O.D. (mm): 28
• Material: Ceramic
• Thickness: 7