7665MZ (forward) two-stage air leg rock drill retains the fundamental characteristics of dual-stage air leg rock drill. Normal high 2~2.4m air leg rock drill, in medium and small section tunnel through the roof surface perpendicular to the bolt hole for tunnel to leave the quality problems. To this end, the successful development of dual-stage air leg rock drill, which featured not only drilling holes in working face, can also be drilled perpendicular to the tunnel roof bolt holes. 7665MZ (forward) two-stage air leg rock drill, 7665 dual stage air leg rock drill, 7665 rock drills, 7665 air leg rock drill

7665MZ (RPM) air leg rock drill parameters

Model weight KG Captain mm bore x itinerary mm working pressure MPa impact energy j frequency HZ air consumption I/s

MZ7665 26 720 76×70 0.4-0.63 =70 =37 =81