DW28-250/100X Coal Mine Single Hydraulic Prop

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Introduction of DW28-250/100X Coal Mine Single Hydraulic Prop

Using the principle of plunger suspension technology, the suspension force reaches four-fifths of the working resistance, and the body is only one-fifth. The stability and safety of the single pillars are greatly improved, and the support height, load bearing capacity and load resistance of the pillars are also improved. Moreover, the arc welding method is no longer used on the movable column, which avoids accidents such as the emergence of the top due to the fracture of the weld seam, and ensures the life safety of the miner.

There is no piston in the cylinder, and there is no problem of internal leakage. According to different pillar specifications, the overall weight of the suspension hydraulic prop is reduced by more than 15-13% than that of the piston hydraulic prop, even lighter than the alloy pillar, and the bearing capacity is improved. 25%, the use range has been expanded by 200%, the minimum height of the pillars is greatly shortened, and transportation is convenient.

Parameter of DW28-250/100X Coal Mine Single Hydraulic Prop

Model project	Max height （mm）	Min height （mm）	workingstroke（mm）	Rated working resistance KN	weight （Kg）	Rated working pressureMPa	Pump station pressure MPa	Initial supportKN	Bore diameter（mm）	Work liquid
DW06-300/100X	630	400	230	300	21	28.3 34	15-20	108.5-144.7	100	Emulsion containing 1% to 2% M10 emulsified oil
DW08-300/100X	800	490	310		24
DW10-300/100X	1000	595	405		27.5
DW12-300/100X	1200	700	500		31.5
DW14-300/100X	1400	810	590		34.5
DW16-300/100X	1600	920	680		38
DW18-300/100X	1800	1035	765		42
DW20-300/100X	2000	1150	850		46.5
DW22-300/100X	2240	1280	960		51
DW25-250/100X	2500	1430	1070	250	56
DW28-250/100X	2800	1600	1200		62
DW31.5-200/100X	3150	1780	1370	200	69	27.6
DW35-200/100X	3500	1960	1540		75

Pictures of DW28-250/100X Coal Mine Single Hydraulic Prop