Bearing
| ISO | ZARN 2557 |
| GOST | РИК 2557 26290 ZARN 2557 |
| Inner diameter (d, mm) | 25 |
| Outer diameter (D, mm) | 57 |
| Width (height) (B, mm) | 50 |
| Weight (m,kg) | 0,53 |
| Dynamic bearing capacity (C, kH) | 35,5/14,9 |
| Static bearing capacity (Co, kH) | 22,6/36,0 |
| Speed at the grease (n prev. Rev / min) | - |
| Speed at the liquid lubricant (n prev. Rev / min) | - |