| NTN 1304 Bearing | 20 | 52 | 15 | NTN | Self-aligning Ball Bearings |
| BARDEN 7304C Bearing | 20 | 52 | 15 | BARDEN | Angular Contact Ball Bearings |
| FLT 7304B Bearing | 20 | 52 | 15 | FLT | Angular Contact Ball Bearings |
| FAG NJ304E+HJ304E Bearing | 20 | 52 | 15 | FAG | Cylindrical Roller Bearings |
| NACHI 1304K Bearing | 20 | 52 | 15 | NACHI | Self-aligning Ball Bearings |
| FAG 21304CC Bearing | 20 | 52 | 15 | FAG | Spherical Roller Bearings |
| NTN 6304-RZ Bearing | 20 | 52 | 15 | NTN | Deep Groove Ball Bearings |
| MRC 6304-RS Bearing | 20 | 52 | 15 | MRC | Deep Groove Ball Bearings |
| ZKL NU304 Bearing | 20 | 52 | 15 | ZKL | Cylindrical Roller Bearings |