| FAG NJ304E.TVP2+HJ304E Bearing | 20 | 52 | 15 | FAG | Cylindrical Roller Bearings |
| SKF 7304 B EG AP* Bearing | 20 | 52 | 15 | SKF | Angular Contact Ball Bearings |
| RIV NJ 304 Bearing | 20 | 52 | 15 | RIV | Cylindrical Roller Bearings |
| NTN NUP 304 E Bearing | 20 | 52 | 15 | NTN | Cylindrical Roller Bearings |
| KOYO N304 Bearing | 20 | 52 | 15 | KOYO | Cylindrical Roller Bearings |
| MRC 6304-2ZN Bearing | 20 | 52 | 15 | MRC | Deep Groove Ball Bearings |
| NTN 6304-2Z Bearing | 20 | 52 | 15 | NTN | Deep Groove Ball Bearings |
| FAG NUP304E Bearing | 20 | 52 | 15 | FAG | Cylindrical Roller Bearings |
| TORRINGTON 6304-2RS Bearing | 20 | 52 | 15 | TORRINGTON | Deep Groove Ball Bearings |
| RIV N 304 Bearing | 20 | 52 | 15 | RIV | Cylindrical Roller Bearings |