Dw12-300/100 Coal Mining Single Hydraulic Prop for Underground Coal Mining

• Customization: Available
• After-sales Service: Our Team Is Dedicated to Addressing Customer Queri
• Warranty: 12 Months
• Model NO.: DW12
• Certification: CE, ISO 9001:2000
• Surface Treatment: Galvanized
• Manufacturing Process: Maching
• Material: Alloy Steel
• Max Height: 3500 mm
• Min Height: 2700mm
• Working Stroke: 800 mm
• Model: Dw Hydraulic Prop
• Net Weight: 82.8kg
• Rated Resistance: 150kN
• Rated Fluid Pressure: 19.1MPa
• First Sustaining Load: 118--157kN
• Pump: 15or20MP
• Column Lifting Speed: 60mm/S
• Transport Package: Carton Box, Plastic Bags, Wooden Cases
• Specification: 80
• Trademark: JR
• Origin: China
• HS Code: 8412210090
• Production Capacity: 1000 Boxes Per Month
• Package Size: 40.00cm * 45.00cm * 32.00cm
• Package Gross Weight: 20.000kg
• Lead Time: 10 days (1 - 100 Pieces) ; To be negotiated ( > 100 Pieces)

Product Description

Product Description

Type	DW35	DW31.5	DW28	DW25	DW22	DW20
Max Height	3500mm	3150mm	2800mm	2500mm	2200mm	2000mm
Min Height	2700mm	2350mm	2000mm	1700mm	1440mm	1240mm
Working Stroke	800mm	800mm	800mm	800mm	800mm	760mm
Net Weight	82.8kg	76.4kg	70kg	58kg	55kg	49kg
Rated Resistance	150kN	200kN	250kN		300kN
Rated Fluid Pressure	19.1Mpa	25.5Mpa	31.8Mpa		38.2Mpa
Rated Fluid Pressure	19.1Mpa	25.5Mpa	31.8Mpa		38.2Mpa
First Sustaining Load	118-157kN
Pump	15or20Mp
Column Lifting Speed	≥40mm/s
Diameter of Oil Cylinder	100mm
Base Area	113cm²			109cm²
Service Substance	Coal 10 (M10)Emulsifier(or MDT10emulsifier)1-2% Emulsion

Underground DWX Single Hydraulic Mining Prop

Product Parameters

Single hydraulic prop is the mining supporting equipment, mainly used for blasting mining and advanced conventional working face back roof support as well as the comprehensive mechanized coal T-junction support.

DWX single hydraulic prop is a new generation of monomer support products, due to its large carrying capacity, the partial load ability, widely uses and so on, can be used in both thin coal seam and thick seam.

1.No Arc Weld
The following problems may happen if the pillar uses arc weld:
First, it's difficult to ensure the weld quality, so it's common that leakage appears around the commissure; second the arc weld weakened the strength and reliability of the plunger. So the DWX pillar actually avoids roof caving accidents caused by weld fracture.

2.Seal-compensation and Seal-swelling
The sealed points of the prop which uses seal-compensation and seal-swelling technique can effectively compensate under the seal warning condition. And can contain the seal-compensation state while facing the back roof pressure or under pressure support.
On the other side, all the sealed points mentioned above are external, so if any leakage happens, it can be observed directly by eyes. Then we can infuse the infusion or replace it in time, to ensure the roof can be perfectly supported and cleanupempty-propping hazard.

3.The Position of Three-use Valve
The three use valve of DWX pillar is installed in the valve body, when the plunger rises the valve holds its position and when the DZ pillar rises, the valve will follow up, as well as the hand of the operator. However, for the thick seam mining, It's not just increases the operation difficulty but also the dangerous of the workers. So it's very likely to cause harm to the operators.While type DWX pillar can avoid the danger caused by the three use valve

Cost Saving and Safety

1.Security Benefits
By improving the safety performance of the pillar; the cost saved by less casualties' accident will be inestimable.
By the suspending plugging principle, suspension force is four fifths of the working resistance, and pillar stress is only one
fifth so the stability and security of pillar are improved, stability coefficient reached 5 and the safety coefficient reached 3.

2.Less Spare-parts Demand and Fewer Repairs
Taking a 100mm working face as an example, the DZ pillars will be easy to leak and bend. In order to maintain normal production, a certain number of reserves must be ensured. But for the DWX pillar, with its low damage rate and applicability, can certainly reduce the spare reserves quantity, so that save a lot of money.

3.Alternate the Emulsion with Water as Working Medium

Company Profile

JUNRUI specialize in the production and R&D of mining machinery part, construction machinery part, agrucultural machinery for more than 20 years.

Over the years development,our products have been exported to  America, Australia, Russia, Canada, Mexico,Colombia,
Netherlands etc and have been widely praised by the customers from home and abroad.
We are committed to providing customers with high quality and reasonable price products.
All Junrui products are designed,engineered and manufactured by highly skilled and experienced engineers,
All the products do QC 3 times before delivery to make sure the quality.

We are committed to providing customers with high quality and reasonable price products. All Junrui products are designed,
engineered and manufactured by highly skilled and experienced engineers, All the products do QC 3 times before delivery to
make sure the quality. The company has imported CNC deep hole boring machines, CNC laser cutting machines, CNC machining
centers, CNC cleaning machines, automatic assembly lines for hydraulic cylinders, robot welding stations, automatic welding
machines and other precision processing equipment, over 200 sets. After years of development, JUNRUI Hydraulic has developed
into an enterprise with complete hardware facilities, sophisticated processing equipment, strong technical force, and good social
benefits. For the stable development of your main business, we look forward to cooperating with you.

Over the years development,our products have been exported to  America, Australia, Russia, Canada, Mexico,Colombia,
Netherlands etc and have been widely praised by the customers from home and abroad.
We are committed to providing customers with high quality and reasonable price products.
All Junrui products are designed,engineered and manufactured by highly skilled and experienced engineers,
All the products do QC 3 times before delivery to make sure the quality.