• Model NO.：DN
• Rated Working Resistance Kn：250
• Rated Working Pressure MPa：39.3
• Cylinder Inner Dia mm：90
• Base Area (mm*2)：120
• Weight (Kg)：68
• Transport Package：Export Standrad Package
• Origin：Jining City, Shandong Province, China
• Production Capacity：1000 Sets Per Month

Basic Info.

Model NO. DN Rated Working Resistance Kn 250 Rated Working Pressure MPa 39.3 Cylinder Inner Dia mm 90 Base Area (mm*2) 120 Weight (Kg) 68 Transport Package Export Standrad Package Origin Jining City, Shandong Province, China Production Capacity 1000 Sets Per Month

Product Description

Structure of Underground 2.5 Meters DN Inner Injection Single Hydraulic Prop

Underground DN Inner Injection Single Hydraulic Prop as internal structure of the mine for the fluid hydraulic prop, mainly consist by the roof, ventilation valve, cylinder, live cylinder, piston, hand pump, unloading valves, safety valves and handles body and other component parts.
Underground DN Inner Injection Single Hydraulic Prop plays a big role in the mine roadway support, get the acceptance and use of country's major coal mines customers, it is simple, easy to use, without liquid injection, the direct use hand crank to complete hydraulic prop lift column and drop column.

Application of Underground 2.5 Meters DN Inner Injection Single Hydraulic Prop

DN inner injection single hydraulic prop could be applied for coal mining face of the roof support and the end plate supporting the head, because of its large carrying capacity, anti-bias load capacity, large working stroke, using a wide range, so it can be used in thin coal seam, thick coal seam or over thick coal seam.

Parameter of Underground 2.5 Meters DN Inner Injection Single Hydraulic Prop

Model	DN25	DN28	DN31.5	DN35	DN38	DN40	DN42	DN45
Max Height mm	2500	2800	3150	3500	3800	4000	4200	4500
Min Height mm	1800	2100	2450	2800	3100	3300	3500	3800
Working Limit mm	700
Rated Working Resistance kN	250		160		150
Rated Working Pressure MPa	39.3		25.1		15.7
Cylinder Inner Dia mm	90				110
Initial Support kN	68.7-78.5
Base Area cm2	120				147
Max. Torque On Handle N.m	<200
Increase Height per Handle Shake mm	≥20
Down Prop Seed mm/s	>30
Working Medium	5#Hydraulic oil
Weight kg	68	74	78	86	91	95	113	119

Pictures of Underground 2.5 Meters DN Inner Injection Single Hydraulic Prop