DC Drive Drawworks of Drilling Rigs High Load Capacity
Bearings all adopt roller ones and shafts are made of premium alloy steel.
Driving chains with high accuracy and high strength are forced lubricated.
The main brake adopts hydraulic disc brake, and the brake disc is water or air cooled.
The auxiliary brake adopts electromagnetic eddy current brake(water or air cooled) or pneumatic push disc brake.
Basic Parameters of DC Drive Drawworks:
|
Model of rig |
JC40D |
JC50D |
JC70D |
|
|
Nominal drilling depth, m(ft) |
with Ф114mm (4 1/2”) DP |
2500-4000 (8200-13100) |
3500-5000 (11500-16400) |
4500-7000 (14800-23000) |
|
with Ф127mm(5”) DP |
2000-3200 (6600-10500) |
2800-4500 (9200-14800) |
4000-6000 (13100-19700) |
|
|
Rated power, kW(hp) |
735 (1000 ) |
1100 (1500 ) |
1470 (2000 ) |
|
|
Qty. of motors ×rated power, kW(hp) |
2 ×438(596)/1 ×800(1088) |
2 ×600 (816) |
2 ×800 (1088) |
|
|
Rated speed of motor, r/min |
880/970 |
970 |
970 |
|
|
Dia. of drilling line, mm(in) |
32 (1 1/2 ) |
35 (1 3/8) |
38 (1 1/2) |
|
|
Max. fast line pull, kN(kips) |
275(61.79) |
340(76.40) |
485(108.36) |
|
|
Main drum size (D×L), mm(in) |
640×1139 (25 1/4×44 7/8 ) |
685×1138 (27 ×44 7/8) |
770×1361 (30 ×53 1/2) |
|
|
Brake disc size (D×W), mm(in) |
1500×40 (59 ×1 1/2) |
1600×76 (63 ×3 ) |
1600×76 (63 ×3) |
|
|
Auxiliary brake |
Electromagnetic eddy current brake/Eaton brake |
|||
|
DSF40/236WCB2 |
DS50/336WCB2 |
DS70/436WCB2 |
||
|
Overall dimension(L×W×H), mm(in) |
6600×3716×2990 (260×146×118) |
6800×4537×2998 (268×179×118) |
7670×4585×3197 (302×181×126) |
|
|
Weight, kg(lbs) |
40000(88185) |
48000(105820) |
61000(134480) |
|
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