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2017 Roof Supports for Underground Mining

US$ 54 - 110 MOQ: 10 Pieces

Key Specifications

Place of Origin:

Shandong, China

Type:

Other

Machine Type:

Other, mining supporting equipment

Jining Bafang Mining Machinery Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

QINGDAO

Delivery Detail:

Delivery time depends on order quantity.

Place of Origin Shandong, China

Type Other

Machine Type Other, mining supporting equipment

Material Carbon Steel

Processing Type Forging

Use Coal Mining

New Model roof supports for mining

specification

DW single hydraulic prop is a constant for the fluid outside the resistive pillars with metal

roof beams, used in coal mine stope roof support, can be used for mechanized mining face end support and temporary support.

model meaning

For example DW25-250/100

D-Representative hydraulic prop

W-representatives out injection type

25 - Maximum height of the pillar

250 - as the pillar of the rated working resistance

100 - as the pillar of the cylinder diameter

feature

1, Long working stroke , especially for large height variation face of underground roof.

2, Apply inner bore seal bump- resistance in the underground, with a wide range of use.

3, Never broken. Using friction welding, the weld is not broken.

4, Uses a new sealing device, remove the DZ-type pillar between the piston and plunger leakage point, safe and reliable.

5,Level of support available.

6, High strength, no bend.

parameter

Type	Unit	DW35	DW31.5	DW28	DW25	DW22	DW20	DW18	DW16	DW14	DW12	DW10	DW08	DW06

Max Height	mm	3500	3150	2800	2500	2240	2000	1800	1600	1400	1200	1000	800	630
Min Height	mm	2700	2350	2000	1700	1440	1240	1110	1005	900	792	685	578	485

Stroke	mm	800	800	800	800	800	760	690	595	500	408	315	222	145
Net Weight (no oil)	kg	82.8	76.4	70	58	55	49	47	43.6	39.9	36.3	32	26.7	26.5
distance between valve and steel beam (mm)	mm				527	267	132
Rated resistance	kN	150	200		250	300
Rated Fluid Pressure	Mpa	19.1	25.5	31.8	31.8	38.2
The First Sustaining Load	kN	118--157
Pump Station Pressure	Mpa	15 or 20
prop rising Speed	mm/s	>=60
prop falling Speed	mm/s	>=40
Diameter of oil cylinder	mm	100
The Base Area	cm2	113			109
working Substance	include emulgator (MD10 emulgator) or emuision(1-2% emuision)