Free Sample Delivery DN20 DN24 Support Tunnel Coal Mine Hydraulic Acrow Supporting Props

• After-sales Service: Online
• Warranty: 1.5
• Max Height: Mmt3500
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: DN20
• Min Height: Mmt2700
• Working Stroke: Mmt800
• Net Weight: Kgt82.8
• Model: Hydraulic Acrow Props
• Ability: 5000/Month
• Date: 15 Days
• Condition: New
• Rated Resistance: 150kn
• Rated Fluid Pressure: 19.1MPa
• Transport Package: Carton Box, Plastic Bags, Wooden Cases or as Your
• Trademark: zhongmei
• Origin: China
• HS Code: 9031809090
• Production Capacity: 1000 Boxes Per Month
• Package Size: 30.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 20.000kg

Product Description

 

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Product Description

Introduction of Free Sample Delivery DN20 DN24 Support Tunnel Coal Mine Hydraulic Acrow Supporting Props 

The inner-injection type single hydraulic prop relies on the internal liquid circulation of the prop to support the top plate under the action of manpower. It is mainly composed of top cover, breather valve, safety valve, live cylinder, oil cylinder block, strut piston, crank slider mechanism and other parts.
The internal injection type single hydraulic prop includes three processes of lifting the column and supporting it, loading, and unloading the column. However, due to the complex structure of the pillars, high maintenance and repair costs, high labor intensity, and high production costs, the usage is gradually decreasing.zmwm02

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Product Parameters

Parameters of Free Sample Delivery DN20 DN24 Support Tunnel Coal Mine Hydraulic Acrow Supporting Props 

 

Model	DN06	DN08	DN10	DN12	DN14	DN16	DN18	DN20	DN22
Max Height mm	650	800	1000	1200	1400	1600	1800	2000	2240
Min Height mm	510	590	700	850	1000	1100	1200	1390	1540
Working Limit mm	140±10	210±10	300±10	350±20	400±20	500±20	600±20	610	700
Rated Working Resistance kN	250							300
Rated Working Pressure MPa	49							46.3
Cylinder Inner Dia mm	80							90
Initial Support kN	49				68.7-78.5
Base Area cm2	120
Max. Torque On Handle N.m	<200
Increase Height per Handle Shake mm	≥12				≥20
Down Prop Seed mm/s	>20				>30
Working Medium	5# hydraulic oil
	5#Hydraulic oil
Weight kg	23	26	29	34	38	41	45	55	60

 

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