| SKF QJ304MA Bearing | 20 | 52 | 15 | SKF | Angular Contact Ball Bearings |
| NSK 6304-2RZ Bearing | 20 | 52 | 15 | NSK | Deep Groove Ball Bearings |
| BARDEN 7304 C Bearing | 20 | 52 | 15 | BARDEN | Angular Contact Ball Bearings |
| KOYO NJ304+HJ304 Bearing | 20 | 52 | 15 | KOYO | Cylindrical Roller Bearings |
| KOYO 1204 K+H 204 Bearing | 20 | 52 | 15 | KOYO | Self-aligning Ball Bearings |
| NSK NSKQJ304N2MA Bearing | 20 | 52 | 15 | NSK | Angular Contact Ball Bearings |
| TORRINGTON 6304-ZN Bearing | 20 | 52 | 15 | TORRINGTON | Deep Groove Ball Bearings |
| NSK NJ 304 E Bearing | 20 | 52 | 15 | NSK | Cylindrical Roller Bearings |
| KOYO 6304 BI Bearing | 20 | 52 | 15 | KOYO | Angular Contact Ball Bearings |