| NSK NU2304 Bearing | 20 | 52 | 21 | NSK | Cylindrical Roller Bearings |
| KOYO NJ2304E Bearing | 20 | 52 | 21 | KOYO | Cylindrical Roller Bearings |
| FAG NJ 2211 +HJ 2212 Bearing | 20 | 52 | 21 | FAG | Cylindrical Roller Bearings |
| STEYR NJ2304E Bearing | 20 | 52 | 21 | STEYR | Cylindrical Roller Bearings |
| KOYO 2304K+H2304 Bearing | 20 | 52 | 21 | KOYO | Self-aligning Ball Bearings |
| FAG 32304A+T2FD020 Bearing | 20 | 52 | 21 | FAG | Tapered Roller Bearings |
| SKF 2304M Bearing | 20 | 52 | 21 | SKF | Self-aligning Ball Bearings |
| NACHI NU2304E Bearing | 20 | 52 | 21 | NACHI | Cylindrical Roller Bearings |
| RIV N 2304 Bearing | 20 | 52 | 21 | RIV | Cylindrical Roller Bearings |
| NSK NUP2304 Bearing | 20 | 52 | 21 | NSK | Cylindrical Roller Bearings |