| KOYO 6304 RS Bearing | 20 | 52 | 15 | KOYO | Deep Groove Ball Bearings |
| NACHI NU 304 Bearing | 20 | 52 | 15 | NACHI | Cylindrical Roller Bearings |
| FLT 7304 B Bearing | 20 | 52 | 15 | FLT | Angular Contact Ball Bearings |
| STEYR N 304 Bearing | 20 | 52 | 15 | STEYR | Cylindrical Roller Bearings |
| STEYR QJ304 Bearing | 20 | 52 | 15 | STEYR | Angular Contact Ball Bearings |
| TORRINGTON 6304-2RS Bearing | 20 | 52 | 15 | TORRINGTON | Deep Groove Ball Bearings |
| SKF *6304-2RSH Bearing | 20 | 52 | 15 | SKF | Deep Groove Ball Bearings |
| FAG 30304 A+T2FB020 Bearing | 20 | 52 | 15 | FAG | Tapered Roller Bearings |
| NACHI NJ304E Bearing | 20 | 52 | 15 | NACHI | Cylindrical Roller Bearings |
| SKF 6304-RS Bearing | 20 | 52 | 15 | SKF | Deep Groove Ball Bearings |