JC70D drawwork
JC70D drawworkDC Drawworks featuresAll 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
- model： JC70D drawwork
JC70D drawwork
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 | 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 | |