| NACHI NJ304+HJ304 Bearing | 20 | 52 | 15 | NACHI | Cylindrical Roller Bearings |
| KOYO 7304C Bearing | 20 | 52 | 15 | KOYO | Angular Contact Ball Bearings |
| MAC NUP304 Bearing | 20 | 52 | 15 | MAC | Cylindrical Roller Bearings |
| STEYR 1304 Bearing | 20 | 52 | 15 | STEYR | Self-aligning Ball Bearings |
| KOYO NJ304 Bearing | 20 | 52 | 15 | KOYO | Cylindrical Roller Bearings |
| KOYO 7304 C Bearing | 20 | 52 | 15 | KOYO | Angular Contact Ball Bearings |
| NACHI N 304 Bearing | 20 | 52 | 15 | NACHI | Cylindrical Roller Bearings |
| FAG 6304-2RS Bearing | 20 | 52 | 15 | FAG | Deep Groove Ball Bearings |
| NSK NSK21304CDKE4 Bearing | 20 | 52 | 15 | NSK | Spherical Roller Bearings |
| TORRINGTON 6304-RS Bearing | 20 | 52 | 15 | TORRINGTON | Deep Groove Ball Bearings |