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Design FeaturesBearings are roller ones and shafts are made of alloy steel.
On the drum there is a spiral groove. The low-speed & high-speed ends of drum shaft are equipped with a ventilating air clutch.
The hydraulic disc brake is regarded as main brake. The disc brake is water or air cooled.
Either eddy current brake or Eaton break (air & water cooled) is considered as an auxiliary brake.
Drawworks transmission: 4(F) and 4 (R).
Gear-shifting mode: air
Chain drive structure
Chains are pressure lubricated and bearings are greased.
Integral or split construction
An auto feed driller with motor is available.
Basic Parameters of DC Motor Driven Drawworks
| Model |
JC70D
|
|
|
Nominal depth range (m) |
Φ114mm DP
|
4500~7000
|
|
Φ127mm DP
|
4000~6000
|
|
|
Rated input power |
kW (hp) |
1470(2000)
|
|
Number*Rated power motors |
KW
|
2*800
|
|
Rated speed of motor |
r/min |
970
|
|
Dia.of wire line |
mm(in) |
38(1 1/2")
|
|
Max.Pull of fast line |
KN
|
485
|
|
Band brake |
mm (in) |
770*1439 |
|
Drum(Diax Length) |
(30"*56 5/8") |
|
|
Brake rim (Diax width) |
mm (in) |
1370*267 (54"*10 1/2")
|
|
Disc brake |
mm (in) |
770*1361 (30"*53 5/8")
|
|
Drum(Diax Length) |
||
|
Brake rim (Diax width) |
mm (in) |
1600*76
|
|
(63"*3")
|
||
|
Sandline reel(Dia*Length) |
mm(in) |
356*1245
|
|
(14"*49")
|
||
|
Capacity of sandline reel(Φ 14.5 wire line) |
m(ft) |
6400
|
|
-21000
|
||
|
Auxiliary brake |
DS70
|
|
|
Overall dimension (LxWxH) |
mm |
7670*4585*3197 |
