1.Introduction of Y20LY Hand-held Air Leg Rock Drill Y20LY hand-held air leg rock drill continuously impacts the shank and continuously inputs compressed air or pressurized water from the center hole of the drill to discharge the slag out of the hole, forming a circular drill hole of a certain depth. Y20LY hand-held air leg rock drill is mainly used for rock drilling in mine roadway excavation. It is most suitable for large mines and tunnel rock drilling operations. The diameter of the blasthole is 34-42 mm and the depth can reach about 5 meters. 2.Parameters of Y20LY Hand-held Air Leg Rock Drill Weight 20 kg Length 561 mm Cylinder diameter 63 mm Stroke 55 mm Working pressure 0.4-0.63 mpa Air consumption â?¤33 l/s Impact frequency â?¥33 hz Impact energy â?¥26 j Air pipe inner diameter 19 mm Water pipe inner diameter 8 mm Bit diameter 34-42 mm Rock drill hole depth 5 m Shank diameter 22*108 mm Shandong Master Machinery Group specializes in supplying pneumatic rock drillï¼?the main models are: QCZ-1, QCZ-2, Y6, Y8, Y10, Y24, Y26, YO18, Y19A, Y20LY, 7665, 7655, YT23, YT24, YT27, YT28, YT29A ,YSP45 .