Open Type Hydrulic Prop

Open Type Hydrulic Prop DW series open type hydraulic prop is normally used for the roof support of coal mining face independently or associated with slide bar or articulated steel beam. It is suitable for gently inclined seam with a gradient less than 25 degree. If safe measuresa are taken, it also can be used for coal face with gradient up to 25-35 degree. Besides, it also could be used as end support in fully mechanized coal mining face.  While it needs pump station to supply the emulsion to work, this is the difference from DN series hydraulic prop. Features: Reliable performance, convenient and safe to operate, and low maintenance cost. Item    Model DW06 DW08 DW10 DW12 DW14 DW16 DW18 DW20 DW22 DW25 DW28 DW31.5 DW35 Work resistance   kN 400 350 300 250 Rated oil pressure Mpa 42.1 36.8 31.6 26.3 Setting loading force kN 142.5-190.0 Pump pressure Mpa 15-20 Max. height mm 630 800 1000 1200 1400 1600 1800 2000 2240 2500 2800 3150 3500 Min. height mm 485 785 685 792 900 1005 1110 1240 1440 1700 2000 2350 2700 Stroke mm 145 222 315 408 500 595 690 760 800 Cylinder 110 Areas of base plate cm2 172 Working liquid M10 or MTD emulsion including 1-2% emulsifiler Weight  kg 38 40 47 50 54 59 62 66 73 79 91 96 103