| KOYO 6304-2RS Bearing | 20 | 52 | 15 | KOYO | Deep Groove Ball Bearings |
| SKF 1304 E TN9 Bearing | 20 | 52 | 15 | SKF | Self-aligning Ball Bearings |
| RHP 1304 Bearing | 20 | 52 | 15 | RHP | Self-aligning Ball Bearings |
| NSK NJ304+HJ304 Bearing | 20 | 52 | 15 | NSK | Cylindrical Roller Bearings |
| SKF *6304-2RSL Bearing | 20 | 52 | 15 | SKF | Deep Groove Ball Bearings |
| SKF 1304 E TN9 Bearing | 20 | 52 | 15 | SKF | Self-aligning Ball Bearings |
| MRC 6304-2Z Bearing | 20 | 52 | 15 | MRC | Deep Groove Ball Bearings |
| KOYO 6304-2RZ Bearing | 20 | 52 | 15 | KOYO | Deep Groove Ball Bearings |
| KOYO 6304Z Bearing | 20 | 52 | 15 | KOYO | Deep Groove Ball Bearings |
| SKF 1304 K Bearing | 20 | 52 | 15 | SKF | Self-aligning Ball Bearings |