| FAG 32304A+T2FD020 Bearing | 20 | 52 | 21 | FAG | Tapered Roller Bearings |
| KOYO NJ2304+HJ2304 Bearing | 20 | 52 | 21 | KOYO | Cylindrical Roller Bearings |
| FAG NJ2304E+HJ2304E Bearing | 20 | 52 | 21 | FAG | Cylindrical Roller Bearings |
| RIV NJ 2304 Bearing | 20 | 52 | 21 | RIV | Cylindrical Roller Bearings |
| KOYO 2304K Bearing | 20 | 52 | 21 | KOYO | Self-aligning Ball Bearings |
| NSK NUP 2304 E Bearing | 20 | 52 | 21 | NSK | Cylindrical Roller Bearings |
| SKF 2304TN Bearing | 20 | 52 | 21 | SKF | Self-aligning Ball Bearings |
| KOYO NUP 2304 Bearing | 20 | 52 | 21 | KOYO | Cylindrical Roller Bearings |
| SKF NJ2304ECP Bearing | 20 | 52 | 21 | SKF | Cylindrical Roller Bearings |