bearings
| ISO | NUP 321 |
| GOST | NUP 321 92321 |
| Inner diameter (d, mm) | 105 |
| Outer diameter (D, mm) | 225 |
| Width (height) (B, mm) | 49 |
| Weight (m,kg) | 8,75 |
| Dynamic bearing capacity (C, kH) | 347 |
| Static bearing capacity (Co, kH) | 236 |
| Speed at the grease (n prev. Rev / min) | - |
| Speed at the liquid lubricant (n prev. Rev / min) | - |