Shandong Huajian company's 7655-type air-leg rock drill is a high efficiency drilling machines. 7655-type air-leg rock drill is widely used in a variety of rock heading and blast hole drilling drilling operations are mining, railways, transportation, water conservancy construction and other stonework projects important equipment. 7655-type air-leg rock drill using a wider scope, the most suitable in hard or hard (f = 8 ~ 18) on a horizontal or inclined rock drilling horizontal or inclined direction blasthole drilling depth of up to 5 meters. 7655-type air-leg rock drill according to both the size and FT1160A roadway type short air leg or FT160B Long legs supporting the use of gas, can also be rack mounted drill rig or drilling work in order to ensure good lubrication, 7655-type air-leg drilling machine is equipped with FY200A type oiler. Main application areas for mining and drilling operations driving roadway, railway, water conservancy construction and defense stonework projects. Product Features has received the highest quality award, and in 1983 held in Peru World drills Performance Comparison contest won first place. Is economical, reliable, durable and versatile rock drill.? Model 7655 Length mm 628 Weight kg 24 Specifications shank hole diameter mm H22 × 108 mm 76 mm 32-42 piston diameter 55 mm piston stroke pneumatic air consumption 0.5MPa condition L / s ≤54 impact frequency Hz ≥36 revolutions r / min 300 pipe diameter mm 25 Products Code 33123003007655 type Air-leg rock drill is a high efficiency drilling machines. 7655-type air-leg rock drill is widely used in a variety of rock heading and blast hole drilling drilling operations are mining, railways, transportation, water conservancy construction and other stonework projects important equipment. 18 B67C crusher powerful