The rock drill has hand-hold and air-leg functions and has characteristic of low weight,reasonable structure,handy use and little air consumption. It is mainly used in small mines,small water conservancyãÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂprospecting and miningãÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂhighway traffic and defence project facility.It is also suitable for drilling and blasting under various of rocks. Specification: Weight : 15kg Length : 550mm Cylinder dia : 58mm Piston stroke : 45mm Air pipe(inner dia) : 19mm Water pipe(inner dia) : 8mm Shank dimensions : 22*108±1mm Air pressure : 0.35-0.55Mpa Water pressure : 0.2Mpa-minimal air pressure Impact frequency(at0.4Mpa ) : 1900/min Impact energy(at0.4Mpa) : 22n.m Torque(at0.4Mpa) : 900n.cm Air consumption(at0.4Mpa) : 1.3m3/min Dustproof : centre water-injection