DC Drawworks features
- All bearings are roller bearing, all shaft material are alloy steel.
- The drum is grooved. The high speed end and low speed end of drum adopt pneumatic tube clutch.
- The brake is hydraulic disk brake, water-cooled or air-cooled.
- The auxiliary brake is eddy current brake, water-cooled or air-cooled.
- Pneumatic gear changing
- Chain transmission construction
- The chain is oil-lubricated and the bearing is grease-lubricated.
- Split type construction
Specification of DC drawworks for drilling rig
|
Model
|
JC40D
|
JC50D
|
JC70D
|
JC90D
|
|
Nominal drill depth m
|
114mm drill pipe
|
2500-4000
|
3500-5000
|
4500-7000
|
6000-9000
|
|
127mm drill pipe
|
2000-3200
|
2800-4500
|
4000-6000
|
5000-8000
|
|
Power rating
kW (hp)
|
735 (1000 )
|
1100 (1500 )
|
1470 (2000 )
|
2210 (3000 )
|
|
Qty. of motor x power rating
kW (hp)
|
2 ×438(537)/
1 ×800(1072)
|
2 ×800(1072)
|
2 ×800(1072)
|
3 ×800(1072)
|
|
Motor rated speed r/min
|
880/970
|
970
|
970
|
970
|
|
Drill line dia. mm(in)
|
32 (1 1/4 )
|
35 (1 3/8 )
|
38 (1 1/2 )
|
45 (1 3/4 )
|
|
Max. fastline pull kN
|
275
|
340
|
485
|
630
|
|
Drum size (Dia. x width) mm(in)
|
640×1139
(25 1/4 ×44 7/8 )
|
685×1138
(27 ×44 7/8 )
|
770×1361
(30 ×53 1/2)
|
914×1556
(36 ×61 1/4)
|
|
Brake disc size (Dia. x width) mm(in)
|
1500×40
(59 ×1 1/2 )
|
1600×76
(63 ×3 )
|
1600×76
(63 ×3)
|
1600×76
(63 ×3 )
|
|
Sand drum size (Dia. x width) mm(in)
|
356×1245
(14 ×49 )
|
356×1245
(14×49 )
|
356×1245
(14 ×49 )
|
356×1448
(14 ×57 )
|
|
Sand drum capacity (14.5 drill line) m(ft)
|
4000 (13120 )
|
5000 (16400 )
|
6400 (21000 )
|
7500 (24600 )
|
|
Auxiliary brake
|
DS40
|
DS50
|
DS70
|
DS90
|
|
Dimension (L x W x H) mm
|
6600×3716×2990
|
6800×4537×2998
|
7670×4585×3197
|
7874×5486×2997
|
|
Weight kg
|
40000
|
48000
|
61000
|
70000
|
