Piston-Type Air Drill Motor 1.High starting torque 2.Anti-overload function 3.Stable under extremely conditions Piston-type Air Drill Motor:TMHH3 Piston-type Air Drill Motor is a kind of Energy Conversion Device, which changes pressure energy into mechanical energy, widely used in mining, oilfields, construction, metallurgy, paper making, medicine, chemistry smelting and other industries, as ...