| Bearing number | NKI 42/20 |
| Size (mm) | 57x42x20 |
| Bore Diameter (mm) | 57 |
| Outer Diameter (mm) | 42 |
| Width (mm) | 20 |
| d | 42 mm |
| D | 57 mm |
| B | 20 mm |
| F | 47 mm |
| r1,2 - min. | 0.3 mm |
| s | 0.5 mm |
| da - min. | 44 mm |
| Da - max. | 55 mm |
| ra - max. | 0.3 mm |
| Basic dynamic load rating - C | 29.2 kN |
| Basic static load rating - C0 | 61 kN |
| Fatigue load limit - Pu | 7.6 kN |
| Reference speed | 8500 r/min |
| Limiting speed | 10000 r/min |
| Category | Roller Bearings |
| Inventory | 0.0 |
| Minimum Buy Quantity | N/A |
| Weight / Kilogram | 0.158 |
| Product Group | B04144 |
| r1,2 min. | 0.3 mm |
| s max. | 0.5 mm |
| da min. | 44 mm |
| Da max. | 55 mm |
| ra max. | 0.3 mm |
| Basic dynamic load rating C | 29.2 kN |
| Basic static load rating C0 | 61 kN |
| Fatigue load limit Pu | 7.65 kN |
| Mass bearing | 0.14 kg |
