| SKF NJ 304 E CP* Bearing | 20 | 52 | 15 | SKF | Cylindrical Roller Bearings |
| NSK 6304-2Z Bearing | 20 | 52 | 15 | NSK | Deep Groove Ball Bearings |
| KOYO 1304 Bearing | 20 | 52 | 15 | KOYO | Self-aligning Ball Bearings |
| STEYR 1304 Bearing | 20 | 52 | 15 | STEYR | Self-aligning Ball Bearings |
| FAG N304E Bearing | 20 | 52 | 15 | FAG | Cylindrical Roller Bearings |
| FAG 6304-2RS Bearing | 20 | 52 | 15 | FAG | Deep Groove Ball Bearings |
| KOYO 6304-2RZ Bearing | 20 | 52 | 15 | KOYO | Deep Groove Ball Bearings |
| FAG NUP 304 E.TVP2 Bearing | 20 | 52 | 15 | FAG | Cylindrical Roller Bearings |
| FAG 6304-2Z Bearing | 20 | 52 | 15 | FAG | Deep Groove Ball Bearings |
| NACHI 6304-RS Bearing | 20 | 52 | 15 | NACHI | Deep Groove Ball Bearings |