20x42x9 thin section 6905 ceramic bearing for bicycle
| Model Number |
20x42x9 |
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
Product Features
20x42x9 thin section 6905 ceramic bearing for bicycle Size Chart (mm/inches) |
|---|
| d | 75 mm |
| D | 105 mm |
| B | 16 mm |
| d1 | 84.7 mm |
| D1 | 95.3 mm |
| D2 | 100.14 mm |
| a | 29 mm |
| Contact angle α | 25 ° |
| rs min | 0.6 mm |
| r1s min | 0.3 mm |
| f0 | 16.69 |
| Precision class | P4 |
| Mass | 0.35 kg |
| Dynamic load, C | 27.2 kN |
| Static load, C0 | 28.8 kN |
| Fatigue limit load, Cu | 1.66 kN |
| Nlim (oil) | 18,000 rpm |
| Nlim (grease) | 11,500 rpm |
| Axial displacement K Factor | 0.49 |
| Preload level | 8 |
| Preload value | 0.7 kN |
| Axial rigidity | 268 N/µm |
| Radial rigidity | 544 N/µm |
| Min operating temperature, Tmin | -30 °C |
| Max operating temperature, Tmax | 120 °C |
| Characteristic cage frequency, FTF | 0.46 Hz |
| Characteristic rolling element frequency, BSF | 10.23 Hz |
| Characteristic outer ring frequency, BPF0 | 11.4 Hz |
| Characteristic inner ring frequency, BPFI | 13.6 Hz |
| da min | 79.5 mm |
| db min | 79.5 mm |
| Da max | 100.5 mm |
| Db max | 100.5 mm |
| r1a max | 0.3 mm |
| ra max | 0.6 mm |
| D6 | 87.5 mm |