... is a kind of high efficiency equipment for load the rock.Use in mine tunnel, road tunnel, culvert, tunnel dig and ... ), gradient<=20degree, big and medium tunnel.The most suit rock is f<=12, gradient <=700mm, working temprature 2~50 degreeBlast proof motor ... :4mDig depth:1mRock uninstall height: 2.625m(can become higher)Rock uninstall distance: 2.681m (can become longer)Dig force: 58KN ...