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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 capacit

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Introduction Of DN Inner Injection Single Hydraulic Prop

DN inner injection single hydraulic prop for the 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.

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 Scope Of 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.

Working Principle Of DN Inner Injection Single Hydraulic Prop

DN inner injection single hydraulic prop The working fluid is the 5th hydraulic oil, back to the column when the hydraulic oil flow back into the cylinder plunger cavity to form a closed loop; does not require pumping and piping systems, auxiliary equipment, low cost; mains and pumping stations in the absence of local still use, flexibility, easy management and simple; since the working fluid is a closed loop, prop prop hydraulic oil flowing back when the plunger cavity pillar itself to achieve closed loop hydraulic oil, hydraulic oil consumes very little; pillar hydraulic system for the closed system, hydraulic oil does not spill, do not pollute the environment, environmental protection, and face the production of small, well maintained face environment, better working conditions; pillar valve is fully installed in the pillar cavity , the possibility of contamination by outside the small, high reliability.

DN31-160/90single hydraulic prop

DN28-200/90inner injection hydraulic prop ,

DN25-250/90 single hydraulic prop,

DN(06,08,10,12,14,16,18)-250/80inner injection hydraulic prop ect.

Parameter Of DN Inner Injection Single Hydraulic Prop

Model DN06 DN08 DN10 DN12 DN14 DN16 DN18 DN20 DN22 DN25 DN28 DN31.5 DN35 DN38 DN40 DN42 DN45
Max Height mm 650 800 1000 1200 1400 1600 1800 2000 2240 2500 2800 3150 3500 3800 4000 4200 4500
Min Height mm 510 590 700 850 1000 1100 1200 1390 1540 1800 2100 2450 2800 3100 3300 3500 3800
Working Limit mm 140±10 210±10 300±10 350±20 400±20 500±20 600±20 610 700 700
Rated Working Resistance kN 250 300 250 160 150
Rated Working Pressure MPa 49 46.3 39.3 25.1 15.7
Cylinder Inner Dia mm 80 90 90 110
Initial Support kN 49 68.7-78.5 68.7-78.5
Base Area cm2 120 120 147
Max. Torque On Handle N.m 200 200
Increase Height per Handle Shake mm ≥12 ≥20 ≥20
Down Prop Seed mm/s 20 30 30
Working Medium 5# hydraulic oil
5#Hydraulic oil
5#Hydraulic oil
Weight kg 23 26 29 34 38 41 45 55 60 68 74 78 86 91 95 113 119
Applicable Coal Seam Thickness m 0.6 0.70.8 0.9 1.1 1.3 1.4 1.5 1.6 - 1.8 - 2.1 - 2.4 - 2.75 - 3.15 - 3.15 - 3.3 - 3.7 - 4.0 -
1 1.2 1.4 1.6 1.8 2 2.2 2.5 2.8 3.15 3.5 3.5 3.8 4.2 4.5


Photo of  DN Inner Injection Single Hydraulic Prop

DN Inner Injection Single Hydraulic Prop

DN Inner Injection Single Hydraulic Prop


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History Feedback: (12)

Latest Feedback

  • Contacts:H***h E-mail:H***h @m***l.mx
    Products have already begun to use, good quality.
    Your satisfaction is our greatest affirmation!
  • Contacts:M***s E-mail:M***s @yahoo.com
    The DN Inner Injection Single Hydraulic Prop is good in use. Thanks for your products.
    Your satisfaction is our greatest affirmation!
  • Contacts:B***t E-mail:B***t @c***o.ph
    I want you to tell me the present condition of the DN Inner Injection Single Hydraulic Prop?
    Dear Customer, We just got your message. Our sales will contact you asap.
  • W***o E-mail:s***p@gmail.com
    Please send me more specific information on your DWXA hydraulic supports. Please Include pictures showing a unit in service. The pump to expand the unit( is it electric or manual and the different collapsed and expanded heights for all the units.) Please provide the FOB price of the units. Regards
    Thanks for your support to us! And the business specialists will contact you later!
  • Contacts:And***** E-mail:And*****@hotmail.com
    Kindly provide the quotation price of DN Inner Injection Single Hydraulic Prop, please give me a good price.
    Thanks for your support to us! And the business specialists will contact you later!
  • Contacts:Mr.Ras*** E-mail:***al@wes**ate.lk
    What is the FOB price on your DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.Mahm*** E-mail:****nin@yahoo.com
    Please send me more information on your DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.RAFI*** E-mail:***69@gmail.com
    Please send me FOB price on DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.onel*** E-mail:***ric@libero.it
    Please send me more information on your DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.JIM*** E-mail:im@aqua****.com.au
    Can you supply DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:H***h E-mail:H***h @m***l.mx
    Products have already begun to use, good quality.
    Your satisfaction is our greatest affirmation!
  • Contacts:M***s E-mail:M***s @yahoo.com
    The DN Inner Injection Single Hydraulic Prop is good in use. Thanks for your products.
    Your satisfaction is our greatest affirmation!
  • Contacts:B***t E-mail:B***t @c***o.ph
    I want you to tell me the present condition of the DN Inner Injection Single Hydraulic Prop?
    Dear Customer, We just got your message. Our sales will contact you asap.
  • W***o E-mail:s***p@gmail.com
    Please send me more specific information on your DWXA hydraulic supports. Please Include pictures showing a unit in service. The pump to expand the unit( is it electric or manual and the different collapsed and expanded heights for all the units.) Please provide the FOB price of the units. Regards
    Thanks for your support to us! And the business specialists will contact you later!
  • Contacts:And***** E-mail:And*****@hotmail.com
    Kindly provide the quotation price of DN Inner Injection Single Hydraulic Prop, please give me a good price.
    Thanks for your support to us! And the business specialists will contact you later!
  • Contacts:Mr.Ras*** E-mail:***al@wes**ate.lk
    What is the FOB price on your DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.Mahm*** E-mail:****nin@yahoo.com
    Please send me more information on your DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.RAFI*** E-mail:***69@gmail.com
    Please send me FOB price on DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.onel*** E-mail:***ric@libero.it
    Please send me more information on your DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
  • Contacts:Mr.JIM*** E-mail:im@aqua****.com.au
    Can you supply DN Inner Injection Single Hydraulic Prop
    Thank you for your inquire. The sales person will contact you soon.
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