| Bearing number | D/W R4-2RS1 |
| Size (mm) | 6.35x15.875x4.978 |
| Bore Diameter (mm) | 6,35 |
| Outer Diameter (mm) | 15,875 |
| Width (mm) | 4,978 |
| d | 6,35 mm |
| D | 15,875 mm |
| B | 4,978 mm |
| C | 4,978 mm |
| Weight | 0,0042 Kg |
| Basic dynamic load rating (C) | 0,852 kN |
| Basic static load rating (C0) | 0,315 kN |
| Fatigue load limit (Pu) | 0,014 |
| d2 ≈ | 8.4 mm |
| D2 ≈ | 13.8 mm |
| r1,2 min. | 0.3 mm |
| da min. | 8 mm |
| da max. | 8.3 mm |
| Da max. | 13.9 mm |
| ra max. | 0.3 mm |
| Basic dynamic load rating C | 0.852 kN |
| Basic static load rating C0 | 0.315 kN |
| Fatigue load limit Pu | 0.014 kN |
| Limiting speed | 28000 r/min |
| Calculation factor kr | 0.02 |
| Calculation factor f0 | 7.1 |
| Mass bearing | 0.0042 kg |
