... widely used in mining,road-contruction. Drilling Machine YN27CYN27C Gasoline Powered Rock Drilling Machine is available for drilling, road breaking & construction, mining, quarrying ... , No Floating TypeIgnition SystemControllable Silicon Contactless SystemDrilling Speed≥250mm/minMax. Drilling Depth≥6MFuel Consumption≤0.12L/mTank Capacity≥1.14lGasoline: Lubrication ...