ROCK DRILLYT27 is High-efficiency, noise, light weight, good economic performance, the footage faster Is best suited for large-scale mining, medium-sized mines and tunnel drilling operations Rock Drill YT27: Weight of machine 27 kg Diameter of cylinders 80 mm Length of piston srtucture 60 mm Working pressue 0.63 Mpa Frequency of drilling impact ≥36.7 Hz Air consumption of drilling ≤83.3 (L/s) Impact energy ≥75.5 (J) Dring speed 5 mm/min