| NSK 6203N Bearing | 17 | 40 | 12 | NSK | Deep Groove Ball Bearings |
| KOYO 6203-2Z Bearing | 17 | 40 | 12 | KOYO | Deep Groove Ball Bearings |
| NSK N203 Bearing | 17 | 40 | 12 | NSK | Cylindrical Roller Bearings |
| ZKL NU203 Bearing | 17 | 40 | 12 | ZKL | Cylindrical Roller Bearings |
| MAC NU203 Bearing | 17 | 40 | 12 | MAC | Cylindrical Roller Bearings |
| FAG 30203 A+T2 DB017 Bearing | 17 | 40 | 12 | FAG | Tapered Roller Bearings |
| RHP 6203-Z Bearing | 17 | 40 | 12 | RHP | Deep Groove Ball Bearings |
| SKF 6203-2RS Bearing | 17 | 40 | 12 | SKF | Deep Groove Ball Bearings |
| NTN 1203 Bearing | 17 | 40 | 12 | NTN | Self-aligning Ball Bearings |
| TORRINGTON 6203-2Z Bearing | 17 | 40 | 12 | TORRINGTON | Deep Groove Ball Bearings |