| SKF QJ 304 M A* Bearing | 20 | 52 | 15 | SKF | Angular Contact Ball Bearings |
| NTN 1304 K Bearing | 20 | 52 | 15 | NTN | Self-aligning Ball Bearings |
| ZKL NU304 Bearing | 20 | 52 | 15 | ZKL | Cylindrical Roller Bearings |
| NSK NSK6304ZNR Bearing | 20 | 52 | 15 | NSK | Deep Groove Ball Bearings |
| STEYR 1204K+H204 Bearing | 20 | 52 | 15 | STEYR | Self-aligning Ball Bearings |
| STEYR 6304 Bearing | 20 | 52 | 15 | STEYR | Deep Groove Ball Bearings |
| KOYO NU 304 E Bearing | 20 | 52 | 15 | KOYO | Cylindrical Roller Bearings |
| NACHI NJ304E Bearing | 20 | 52 | 15 | NACHI | Cylindrical Roller Bearings |
| SKF QJ 304 N2PH AS* Bearing | 20 | 52 | 15 | SKF | Angular Contact Ball Bearings |
| NACHI 7304 B Bearing | 20 | 52 | 15 | NACHI | Angular Contact Ball Bearings |