| Bearing number | D/W R188-2RS1 |
| Size (mm) | 12.7x6.35x4.762 |
| Bore Diameter (mm) | 12,7 |
| Outer Diameter (mm) | 6,35 |
| Width (mm) | 4,762 |
| d | 6.35 mm |
| D | 12.7 mm |
| B | 4.762 mm |
| d2 | 7.4 mm |
| D2 | 11.6 mm |
| r1,2 - min. | 0.15 mm |
| da - min. | mm |
| Da - max. | mm |
| ra - max. | 0.15 mm |
| Basic dynamic load rating - C | 0.618 kN |
| Basic static load rating - C0 | 0.224 kN |
| Fatigue load limit - Pu | 0.01 kN |
| Limiting speed | 30000 r/min |
| Calculation factor - kr | 0.02 |
| Calculation factor - f0 | 7 |
| d2 ≈ | 7.4 mm |
| D2 ≈ | 11.6 mm |
| r1,2 min. | 0.15 mm |
| da min. | 0 mm |
| Da max. | 0 mm |
| ra max. | 0.15 mm |
| Basic dynamic load rating C | 0.618 kN |
| Basic static load rating C0 | 0.224 kN |
| Fatigue load limit Pu | 0.01 kN |
| Calculation factor kr | 0.02 |
| Calculation factor f0 | 7 |
| Mass bearing | 0.002 kg |
