Bearing
| ISO | NU 221 |
| GOST | 32221 8328-75 NU 221 |
| Inner diameter (d, mm) | 105 |
| Outer diameter (D, mm) | 190 |
| Width (height) (B, mm) | 36 |
| Weight (m,kg) | 4 |
| Dynamic bearing capacity (C, kH) | 201 |
| Static bearing capacity (Co, kH) | 137 |
| Speed at the grease (n prev. Rev / min) | - |
| Speed at the liquid lubricant (n prev. Rev / min) | - |