... ability, and hard rock in the rock at speeds of up to 1 1.5 m / min. Drilling and blasting of ... technical parametersWorking pressure(MPa)0.5~0.86Slip angle of up/down ()up45, down 60Air consumption(M3/min)12-23Swing angle ()Left 50right ... 35Drill diameter(mm)43,51,64,76,89,102Arm angle up/down ()Level up55down15Related rock drillYG80Arm swing angle ()Left /right 45Hole depth ...