 
Single Hydraulic Prop
DN Prop Series
The series of DN inner-injected single hydraulic prop can be used for supporting the roof of mining coal face independently or associated with metal articulated roof beam. It is suitable for gently inclined seam with a gradient less than 25°. If safety measures are taken, it is also for coal face with gradient up to 25-35°. Besides, it can be used as an end support in a fully mechanized mining coal face.
Features:
1. Light weight, high loading capacity;
2. Quick setting, convenient recovering;
3. Reliable sealing;
4. Emulsion supply from power pack and hose system is eliminated, so no draining emulsions while lowering. It keeps a clean environment;
5. Easy operation and convenient management.
|
Model
|
Max.H
(mm)
|
Max.H
(mm)
|
Stroke
(mm)
|
Working Resistance
(kN)
|
Rated Oil Pressure
(MPa)
|
Oil Cylinder Dia.
(mm)
|
Area Offoot Plate
(mm2)
|
Working Liquid
|
Weight
(Kg)
|
|
DN31-160/90
|
3150
|
2450
|
700
|
160
|
25
|
90
|
120
|
5# Hydraulic oil
|
78
|
|
DN28-200/90
|
2800
|
2100
|
700
|
200
|
31
|
90
|
120
|
74
|
|
DN25-250/90
|
2500
|
1800
|
700
|
245
|
39
|
90
|
120
|
68
|
|
DN22-300/90
|
2240
|
1540
|
700
|
294
|
46.3
|
90
|
120
|
60
|
|
DN20-300/90
|
2000
|
1360
|
640
|
294
|
46.3
|
90
|
120
|
55
|
|
DN18-250/80
|
1800
|
1250
|
550
|
245
|
49
|
80
|
120
|
45
|
|
DN16-250/80
|
1600
|
1100
|
500
|
245
|
49
|
80
|
120
|
41
|
|
DN14-250/80
|
1400
|
1000
|
400
|
245
|
49
|
80
|
120
|
38
|
|
DN12-250/80
|
1200
|
870
|
330
|
245
|
49
|
80
|
120
|
34
|
|
DN10-25/80
|
1000
|
720
|
280
|
245
|
49
|
80
|
120
|
29
|
|
DN08-250/80
|
800
|
590
|
210
|
245
|
49
|
80
|
120
|
26
|
|
DN06-25/80
|
650
|
510
|
140
|
245
|
49
|
80
|
120
|
23
|
DW Prop Series
The series of DW outer-injected single hydraulic prop can be used for supporting the roof of mining coal face independently or associated with metal articulated roof beam. It is suitable for gently inclined seam with a gradient less than 25°. If safety measures are taken, it is also for coal face with gradient up to 25-35°. Besides, it can be used as an end support in a fully mechanized mining coal face.
Features:
The holding power is great and well distributed, it’s convenient and safety operate.
|
Model
|
Max.H
(mm)
|
Min.H
(mm)
|
Stroke
(mm)
|
Working Resistance
(kN)
|
Rated Oil Pressure
(MPa)
|
Oil Cylinder Dia.
(mm)
|
Area Offoot
plate
(mm2)
|
Working
liquid
|
Weight
(Kg)
|
|
DW25-400/110
|
2500
|
1700
|
800
|
400
|
42.1
|
110
|
172
|
M10 or MTD Emulsion including 1-2% emulsifier
|
79
|
|
DW22-400/110
|
2240
|
1440
|
800
|
400
|
42.1
|
110
|
172
|
73
|
|
DW20-400/110
|
2000
|
1240
|
760
|
400
|
42.1
|
110
|
172
|
66
|
|
DW18-400/110
|
1800
|
1110
|
690
|
400
|
42.1
|
110
|
172
|
62
|
|
DW16-400/110
|
1600
|
1005
|
595
|
400
|
42.1
|
110
|
172
|
59
|
|
DW14-400/110
|
1400
|
900
|
500
|
400
|
42.1
|
110
|
172
|
54
|
|
DW12-400/110
|
1200
|
792
|
408
|
400
|
42.1
|
110
|
172
|
50
|
|
DW10-400/110
|
1000
|
685
|
315
|
400
|
42.1
|
110
|
172
|
47
|
|
DW08-400/110
|
800
|
578
|
222
|
400
|
42.1
|
110
|
172
|
40
|
|
DW06-400/110
|
630
|
485
|
145
|
400
|
42.1
|
110
|
172
|
38
|
|
DW35-150/100
|
3500
|
2700
|
800
|
150
|
19.1
|
100
|
113
|
82.8
|
|
DW31-200/100
|
3150
|
2350
|
800
|
200
|
25.5
|
100
|
113
|
76.4
|
|
DW28-250/100
|
2800
|
2000
|
800
|
250
|
31.8
|
100
|
113
|
70
|
|
DW25-250/100
|
2500
|
1700
|
800
|
250
|
31.8
|
100
|
113
|
58
|
|
DW22-300/100
|
2240
|
1440
|
800
|
300
|
38.2
|
100
|
113
|
55
|
|
DW20-300/100
|
2000
|
1240
|
760
|
300
|
38.2
|
100
|
113
|
48
|
|
DW18-300/100
|
1800
|
1110
|
690
|
300
|
38.2
|
100
|
113
|
47
|
|
DW16-300/100
|
1600
|
1005
|
595
|
300
|
38.2
|
100
|
113
|
43.5
|
|
DW14-300/100
|
1400
|
900
|
500
|
300
|
38.2
|
100
|
113
|
40
|
|
DW12-300/100
|
1200
|
792
|
408
|
300
|
38.2
|
100
|
113
|
36.3
|
|
DW10-300/100
|
1000
|
685
|
315
|
300
|
38.2
|
100
|
113
|
32
|
|
DW08-300/100
|
800
|
578
|
222
|
300
|
38.2
|
100
|
113
|
26.2
|
|
DW06-300/100
|
630
|
485
|
145
|
300
|
38.2
|
100
|
113
|
25.1
|
|
