China DN06-250 80 Single Inner Injection Hydraulic Prop for Mining Tunnel

Introduction of DN type hydraulic prop
Specification:
DN(04-18)-250/80,
DN(20-22)-300/90,
DN(25-28)-250/90,
DN(31.5-35)-160/90,
DN(35-45)-150/110.
DN type internal injection single hydraulic prop adopt domestic high-quality 27SiMn seamless steel pipe and heavy duty forgings to make.
Our factory has perfect quality management system.
The finished products are tested strictly according to the MT112.1-2006 standard, with reliable quality and excellent performance.
DN (06-45) series prop internally equipped with safety valve to maintain the constant resistance load of the prop.
It could be used with the metal articulated roof beam and the suspended bracket top beam and could also be used as a pillar for supporting the roof of the general mechanization coal mines working face and could be use for supporting comprehensive mechanical coal mining working face end and other temporary support.Parameters of DN type hydraulic prop

Specification
Item DN04DN05DN06DN08DN10DN12DN14DN16DN18Max. height (mm)410±10510±10650±10800±101000±101200±201400±201600±201800±20Min. height (mm)340390510590700850100011001200Working stroke (mm)70±10120±10140±10210±10300±10350±20400±20500±20600±20Rated working resistance (KN)250Rated working oil pressure (MPa)49Oil cylinder inner diameter (mm)80Initial support force (kN)4968.7-78.5base area (cm2)120Max. operation torque when initial bracing acting on Handlebar's (N.m)<200Prop's rise height when handles bars sway one time full stroke no-load(mm)≥12≥20Prop lower speed (mm/s)>20>30Working medium 5# hydraulic oilWeight (kg)182023262934384145Applicable coal seam thickness (m)0.40.50.60.7-0.80.9-1.01.1-1.21.3-1.41.4-1.61.5-1.8

Item DN20DN22DN25DN28DN31.5DN35DN35DN38DN40DN42DN45Max. height ±20mm20002240250028003150350035003800400042004500Min. height (mm)13901540180021002450280028003100330035003800Working stroke ±20mm610700Rated working resistance (KN)300250160150Rated working oil pressure (MPa)46.339.325.115.7Oil cylinder inner diameter (mm)90110Initial support force (kN)68.7-78.5base area (cm2)129147Max. operation torque when initial bracing
acting on Handlebar's (N.m)<200Prop's rise height when handlesbars sway
one time full stroke no-load(mm)≥20Prop lower speed (mm/s)>30Working medium 5# hydraulic oilWeight (kg)556068747886919599113119Applicable coal seam thickness (m)1.6 -2.01.8 -2.22.1-2.52.4-2.82.75-3.153.15-3.53.3-3.83.5 -43.7 -4.24.0-4.5

Images of DN type hydraulic prop

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