| MRC 6304-RS Bearing | 20 | 52 | 15 | MRC | Deep Groove Ball Bearings |
| SNR 1204 K+H 204 Bearing | 20 | 52 | 15 | SNR | Self-aligning Ball Bearings |
| STEYR NU 304 Bearing | 20 | 52 | 15 | STEYR | Cylindrical Roller Bearings |
| NTN 7304 C Bearing | 20 | 52 | 15 | NTN | Angular Contact Ball Bearings |
| KOYO 7304B Bearing | 20 | 52 | 15 | KOYO | Angular Contact Ball Bearings |
| NACHI NUP 304 Bearing | 20 | 52 | 15 | NACHI | Cylindrical Roller Bearings |
| SKF NUP 304 E CP* Bearing | 20 | 52 | 15 | SKF | Cylindrical Roller Bearings |
| SKF 6304-2ZNR Bearing | 20 | 52 | 15 | SKF | Deep Groove Ball Bearings |
| NSK 6304-RS Bearing | 20 | 52 | 15 | NSK | Deep Groove Ball Bearings |
| NTN 7304 B Bearing | 20 | 52 | 15 | NTN | Angular Contact Ball Bearings |