Ceramic Hybrid bearings feature ABEC-5 tolerances and premium features such as LLB seals Graphite Nylon retainers Silicon Nitride Grade 5 balls and cryogenically treated steel races.ABEC 5 precision cartridge bearing Grade 5 Si3N4 Silicon Nitride balls 52100 high carbon Chromium alloy races Races receive 3 cryogenic treatments "LLB" type 2-lip low-contact Nitrile Butadiene rubber labyrinth seals Nylon/graphite retainer Realube Special Ceramic Grade 374 Grease
| Bearing I.D. (mm) | 17 |
| Manufacturer Number | 6903 |
| Bearing O.D. (mm) | 30 |
| Material | Ceramic |
| Thickness | 7 |
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