bearings
| ISO | RNU 509 |
| GOST | RNU 509 292509 |
| Inner diameter (d, mm) | 55 |
| Outer diameter (D, mm) | 85 |
| Width (height) (B, mm) | 23 |
| Weight (m,kg) | 0,416 |
| Dynamic bearing capacity (C, kH) | - |
| Static bearing capacity (Co, kH) | - |
| Speed at the grease (n prev. Rev / min) | - |
| Speed at the liquid lubricant (n prev. Rev / min) | - |