AC-AC VFD single shaft drawworks
The drum is grooved.
The auto drilller system is installed
The main brake is hydraulic disc brake, the brake rim is water cooled or air cooled.
The auxiliary brake is energy consumption brake.
Parameters
|
Model no. |
JC40DB |
JC50DB |
JC70DB |
JC90DB |
|
|
Nominal drill depth m |
4 1/2” drill pipe |
2500-4000 |
3500-5000 |
4500-7000 |
6000-9000 |
|
5” drill pipe |
2000-3200 |
2800-4500 |
4000-6000 |
5000-8000 |
|
|
Rated power kW(hp) |
735(1000) |
1440(1959) |
2200(2993) |
3300(4489) |
|
|
Dia. Of wire line mm (in) |
32 (1 1/4) |
35(1 3/8) |
38 (1 1/2) |
45(1 3/4) |
|
|
Max. pull of fast line kN |
275 |
340 |
485 |
630 |
|
|
Main drum (Dia×Length) mm(in) |
640×1139(25 1/4×44 7/8) |
685×1138(27×44 7/8) |
770×1361(30×53 5/8) |
914×1556(36×61 1/4) |
|
|
Brake rim (Dia×width) mm(in) |
1500×76 (59×3) |
1500×76 (59×3) |
1520×76 (59 3/4×3) |
1800×76 (70 7/8×3) |
|
