| NSK NJ304E+HJ304E Bearing | 20 | 52 | 15 | NSK | Cylindrical Roller Bearings |
| STEYR 1204K+H204 Bearing | 20 | 52 | 15 | STEYR | Self-aligning Ball Bearings |
| MRC QJ304 Bearing | 20 | 52 | 15 | MRC | Angular Contact Ball Bearings |
| SKF NUP304ECP* Bearing | 20 | 52 | 15 | SKF | Cylindrical Roller Bearings |
| ZKL NJ 304 Bearing | 20 | 52 | 15 | ZKL | Cylindrical Roller Bearings |
| SKF 6304-RSL Bearing | 20 | 52 | 15 | SKF | Deep Groove Ball Bearings |
| STEYR 6304-ZN Bearing | 20 | 52 | 15 | STEYR | Deep Groove Ball Bearings |
| FAG NJ 304 E.TVP2 +HJ304 E Bearing | 20 | 52 | 15 | FAG | Cylindrical Roller Bearings |
| TORRINGTON 7304 C Bearing | 20 | 52 | 15 | TORRINGTON | Angular Contact Ball Bearings |
| SKF 6304-2Z Bearing | 20 | 52 | 15 | SKF | Deep Groove Ball Bearings |