| STEYR 1304K Bearing | 20 | 52 | 15 | STEYR | Self-aligning Ball Bearings |
| MRC NU304 Bearing | 20 | 52 | 15 | MRC | Cylindrical Roller Bearings |
| NTN NUP 304 Bearing | 20 | 52 | 15 | NTN | Cylindrical Roller Bearings |
| FAG 7304 B Bearing | 20 | 52 | 15 | FAG | Angular Contact Ball Bearings |
| NACHI 6304-RZ Bearing | 20 | 52 | 15 | NACHI | Deep Groove Ball Bearings |
| KOYO 6304-Z Bearing | 20 | 52 | 15 | KOYO | Deep Groove Ball Bearings |
| SKF 7304 B EG BP* Bearing | 20 | 52 | 15 | SKF | Angular Contact Ball Bearings |
| NACHI NU 304 Bearing | 20 | 52 | 15 | NACHI | Cylindrical Roller Bearings |
| MAC N304 Bearing | 20 | 52 | 15 | MAC | Cylindrical Roller Bearings |
| NSK 6304-2RS Bearing | 20 | 52 | 15 | NSK | Deep Groove Ball Bearings |