| KOYO 1304 Bearing | 20 | 52 | 15 | KOYO | Self-aligning Ball Bearings |
| SKF QJ 304 N2 M A* Bearing | 20 | 52 | 15 | SKF | Angular Contact Ball Bearings |
| NTN 6304-Z Bearing | 20 | 52 | 15 | NTN | Deep Groove Ball Bearings |
| KOYO 6304-2Z Bearing | 20 | 52 | 15 | KOYO | Deep Groove Ball Bearings |
| SKF N 304 E Bearing | 20 | 52 | 15 | SKF | Cylindrical Roller Bearings |
| NSK NSK1304ETN9 Bearing | 20 | 52 | 15 | NSK | Self-aligning Ball Bearings |
| MRC 6304-2ZN Bearing | 20 | 52 | 15 | MRC | Deep Groove Ball Bearings |
| SKF 1304 E TN9 Bearing | 20 | 52 | 15 | SKF | Self-aligning Ball Bearings |
| NSK 6304-RS Bearing | 20 | 52 | 15 | NSK | Deep Groove Ball Bearings |
| FAG NUP304E Bearing | 20 | 52 | 15 | FAG | Cylindrical Roller Bearings |