The 6805 (25x37x7mm) is commonly found in BB30 bottom bracket systems, some press-fit BB designs, and oversized hub applications. Our Grade 3 ceramic version provides ABEC-7 tolerances and DLC-coated races for a direct precision upgrade. Sold individually.
What You Get
- ✓ Grade 3 Si₃N₄ ceramic balls — harder and smoother than steel
- ✓ DLC-coated races reduce surface friction and extend life
- ✓ ABEC-7 precision tolerances for exact bearing bore fit
- ✓ 2RS contact seals for broad application use
- ✓ Sold individually — order the quantity you need
Technical Specifications
| Sold As |
Individual bearing |
| Seal Type |
2RS contact seals |
| Tolerance |
ABEC-7 |
| Dimensions |
25x37x7mm |
| Expected Life |
12,000–22,000 miles |
| Race Material |
52100 Chromium Steel, DLC Coated |
| Bearing Material |
Grade 3 Silicon Nitride (Si₃N₄) |
Compatibility
BB30 bottom bracket systems
PF30 press-fit bottom brackets
Oversized rear hub applications
Any application requiring a 25x37x7mm bearing