| KOYO N304 Bearing | 20 | 52 | 15 | KOYO | Cylindrical Roller Bearings |
| TORRINGTON 6304-Z Bearing | 20 | 52 | 15 | TORRINGTON | Deep Groove Ball Bearings |
| NACHI 1204K+H204 Bearing | 20 | 52 | 15 | NACHI | Self-aligning Ball Bearings |
| DKF 7304AC Bearing | 20 | 52 | 15 | DKF | Angular Contact Ball Bearings |
| NSK NSK6304-RSL Bearing | 20 | 52 | 15 | NSK | Deep Groove Ball Bearings |
| SKF N304ECP* Bearing | 20 | 52 | 15 | SKF | Cylindrical Roller Bearings |
| SKF H205 Bearing | 20 | 52 | 15 | SKF | Self-aligning Ball Bearings |
| NTN 7304AC Bearing | 20 | 52 | 15 | NTN | Angular Contact Ball Bearings |
| FAG 30304 A+T2FB020 Bearing | 20 | 52 | 15 | FAG | Tapered Roller Bearings |
| MAC NUP 304 Bearing | 20 | 52 | 15 | MAC | Cylindrical Roller Bearings |