bearings
| ISO | NU 304 |
| GOST | NU 304 32304 |
| Inner diameter (d, mm) | 20 |
| Outer diameter (D, mm) | 52 |
| Width (height) (B, mm) | 15 |
| Weight (m,kg) | 0,15 |
| Dynamic bearing capacity (C, kH) | 20,5 |
| Static bearing capacity (Co, kH) | 10,4 |
| Speed at the grease (n prev. Rev / min) | - |
| Speed at the liquid lubricant (n prev. Rev / min) | - |