Draw Works

Draw Works

Product Description

Main Features
All bearings are roller bearing, all shaft material are alloy steel.
The chains adopt forced lubrication.

The drum is grooved. The high speed end and low speed end of drum adopt pneumatic tube clutch; The brake drum for band brake adopt forced water cooling; The brake disk for disk brake adopt forced water cooling or air cooling; The brake drum and brake disk are case-hardening treated with excellent wear-resistance capacity and long service life.

The tooth profile of sprocket are intermediate frequency hardening treated, all shifting clutch are clutch. With involute spline.

The main brake are band brake or hydraulic disk brake, the assistant brake are dynamic brake, eddy current brake or EATON brake.
Model
 
JC20DB
 
JC30
 
JC30DB
 
JC40
 
JC40D
 
JC40DB
 
Nominal drilling depth (5 ″ DP) m
 
2000
 
3000
 
3000
 
4000
 
4000
 
4000
 
Max. input power   kW
 
400
 
560
 
450
 
735
 
735
 
900
 
Max. fastline pull   kN
 
200
 
200
 
200
 
280
 
275
 
275
 
Nominal dia. of drill line   mm
 
19
 
29
 
29
 
32
 
32
 
32
 
Drum size (dia.×width) mm
 
457×1000
 
508×1178
 
508×1182
 
640×1139
 
640×1139
 
640×1139
 
Sand drum size (dia.×width) mm
 
  
 
 
 
 
 
 
 
 
 
 
 
accommodate capacity of sand drum   m
 
 
 
 
 
 
 
 
 
 
 
 
 
gears for hoisting speed
 
2
 
4+2R
 
1
 
4+2R
 
2
 
1
 
gears for rotary speed
 
1
 
 
 
1
 
 
 
1
 
1
 
Main brake
 
 
 
band brake
 
Hyd. disk brake
 
band brake
 
Hyd. disk brake PSZ65
 
Hyd. disk brake
 
Hyd.disk brake
 
Dynamic brake
 
Hyd.disk brake
 
Dynamic brake
 
Assistant brake
 
-
 
FDWS30
 
 
 
DWS 40L
 
DSF40D
 
 
 
Control for speed and function
 
AC VFD control, dynamic brake
 
 
 
AC VFD control, dynamic brake
 
 
 
 
 
AC VFD control, dynamic brake
 
Emergency brake and manual control
 
Hyd. disk brake
 
 
 
Hyd. disk brake
 
 
 
 
 
Hyd. disk brake
 

 

 

 

 

 

 

 
Model
 
JC50
 
JC50D
 
JC50DB
 
JC70
 
JC70DB
 
Nominal drilling depth   (5 ″ DP) m
 
5000
 
5000
 
5000
 
7000
 
7000
 
Max. input power   kW
 
1100
 
1100
 
1200
 
1470
 
1940
 
Max. fastline pull   kN
 
350
 
350
 
350
 
487
 
487
 
Nominal dia. of drill line   mm
 
35
 
35
 
35
 
38
 
38
 
Drum size (dia.×width) mm
 
685×1209
 
685×1245
 
685×1245
 
770×1439
 
770×1439
 
Sand drum size (dia.×width) mm
 
 
 
356×1245
 
 
 
 
 
 
 
accommodate capacity of sand drum   m
 
 
 
5000
 
 
 
 
 
 
 
gears for hoisting speed
 
4+2R
 
2
 
1
 
4+2R
 
1
 
gears for rotary speed
 
  4 + 2R
 
1
 
1
 
4+2R
 
1
 
Main brake
 
Band brake
 
Hyd. Disk brake
 
Hyd disk brake,dynamic brake
 
Band brake
 
Hyd disk brake, dynamic brake
 
Hyd. Disk brake
 
Hyd. Disk brake
 
Assistant brake
 
DSF-50
 
WCB336
 
 
 
DSF-70
 
 
 
Control for speed and function
 
 
 
 
 
AC VFD control, dynamic brake
 
 
 
AC VFD control, dynamic brake
 
Emergency brake and manual control
 
 
 
 
 
Hyd. Disk brake
 
 
 
Hyd. Disk brake
 

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