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Jining Dongda Group Mining Machinery Co,.Ltd
Jining Dongda Group Mining Machinery Co,.Ltd  

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DN Inner Injection Single Hydraulic Prop 

Price: 100.0~300.0 USD 
Payment Terms: T/T,WU 
Place of Origin: Shandong, China (Mainland) 
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Product Detail

Model No.: 2450
Production Capacity: 10000 set one month
Delivery Date: 7 days after received the p...
Type: Others
working stroke: 2450mm
Min height: 1050mm
Means of Transport: Ocean,Land,Air
Packing: Wooden case
Application: Coal
Brand Name: Dongkuangan
Max height: 2500mm

DN inner injection single hydraulic prop for the internal structure of the mine for the fluid hydraulic prop, mainly consist by the roof, ventilation


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 

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 

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.


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DN Inner Injection Hydraulic Prop 


Due to production batch, the specific model, the above pictures for reference only, you can contact our sales staff for specific verification. 

Contact person: joanna 


Tel: +86-537-2902388  Fax: +86-537-2902388


Address : West of Zhixue Road,High-tech Zone,Jining City,Shandong Province,China

 Ms. joanna

Tel: 86-537-2902388
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Company Info

Jining Dongda Group Mining Machinery Co,.Ltd [China (Mainland)]

Business Type:Manufacturer
City: Jining
Province/State: Shandong
Country/Region: China (Mainland)

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