Purpose:
- Stem round trip;
- Casing pipes running;
- Stem feed to borehole bottom;
- Rotation transmission to rotor;
- Derrick round trip;
- Emergency stem hoisting.
Technical specification:
| Type | F 5 | TF 6.5 DB | TF 7.5 | TF 11.5 | TF 12.5 DB | TF 15 | TF 20 | TF 25 E |
| Wire line pull, tf | 5 | 6,5 | 7,5 | 11,5 | 12,5 | 15 | 20 | 25 |
| Input power, kW/HP | 96/ 130 | 147/ 200 | 147/ 200 | 220/ 300 | 300/ 410 | 515/ 700 | 1,100/ 1,500 | 1,180/ 1,600 |
| Drum diameter, mm | 324 | 334 | 372 | 427 | 470 | 464 | 470 | 710 |
| Overall dimension, mm: length | 2,550 | 2,292 | 2,600 | 3,447 | 3,196 | 2,592 | 3,016 | 6,800 |
| Width | 1,780 | 1,662 | 1,300 | 1,300 | 2,350 | 3,082 | 2,584 | 2,440 |
| Height | 1,500 | 1,470 | 1,390 | 1,523 | 1,658 | 1,405 | 1,405 | 2,150 |
| Mass, t | 2,6 | 2,94 | 2,9 | 3,7 | 7,37 | 7,7 | 8,45 | 21,3 |
