Specification of the rock drill: Weight of main machine: 27 kg Engine displacement: 185 cm3 Impact energy: More than 22 J Rotating speed of engine with load: 2450 rpm Drilling speed: 250 mm/min Drilling diameters: 32 to 42 mm Max. Drilling depth: 6 m End of tool shank: 22x108 mm Ignition system: Hand needle valve, non-floating-valve plate type Features of the rock drill: 1. Compact and latest design in Rock Drill machinery, suitable for working on high mountains and places with no power supply and air compressing equipment, especially suitable for the temporary projects. 2. Low maintenance design, with less easy-to-damage-parts, need less time and less costly to repair. 3. Carried easily with the main engine weighing only 27kg 4. Easy to control. It is a kind hand-held drill built up with gasoline engine, air pump, rock drill. 5. The impacting and drilling movements were detachable so this machine can be used as a tool for breaking, percussive drilling, tamping besides rock drilling.
