Structure of Underground 2.5 Meters DN Inner Injection Single
Hydraulic PropUnderground 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 PropDN 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
PropModelDN25DN28DN31.5DN35DN38DN40DN42DN45Max Height
mm25002800315035003800400042004500Min Height
mm18002100245028003100330035003800Working Limit
mm700 Rated Working
Resistance kN250 160 150 Rated Working
Pressure MPa39.3 25.1 15.7 Cylinder
Inner Dia mm90 110 Initial
Support kN68.7-78.5 Base
Area cm2120 147 Max. Torque On
Handle N.m30 Working
Medium5#Hydraulic
oil Weight
kg687478869195113119Pictures of Underground 2.5 Meters DN Inner
Injection Single Hydraulic Prop /* March 10, 2023
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