| NACHI NNU 4921 K Bearing | 105 | 145 | 40 | NACHI | Cylindrical Roller Bearings |
| BARDEN 71921C/DT Bearing | 105 | 145 | 40 | BARDEN | Angular Contact Ball Bearings |
| FAG 71921 C/ DF Bearing | 105 | 145 | 40 | FAG | Angular Contact Ball Bearings |
| MRC 71921 C/ DB Bearing | 105 | 145 | 40 | MRC | Angular Contact Ball Bearings |
| KOYO NNU4921K Bearing | 105 | 145 | 40 | KOYO | Cylindrical Roller Bearings |
| KOYO 71921C/DF Bearing | 105 | 145 | 40 | KOYO | Angular Contact Ball Bearings |
| KOYO 71921C/DB Bearing | 105 | 145 | 40 | KOYO | Angular Contact Ball Bearings |
| KOYO 7921CDT Bearing | 105 | 145 | 40 | KOYO | Angular Contact Ball Bearings |
| NTN 71921C/DB Bearing | 105 | 145 | 40 | NTN | Angular Contact Ball Bearings |
| SKF 71921 C/ DT Bearing | 105 | 145 | 40 | SKF | Angular Contact Ball Bearings |