Yn27 Internal Combustion Rock Drill, Certification : ISO9001

We are offering yn27 internal combustion rock drill.
internal combustion rock drill
weight(kg) 27
dimensions (mm) 746*315*229
type of engine single cylinder, air cooled two strokes
cylinder diameter stroke of piston φ58*70mm
rotating speed of engine >=2450r/min
displacement of engine piston 1850cm³
type of carburetor hand needle valve, floatless type
ignition system controllable sillicon,contactless system
drilling speed (mean value of five holes) >=250mm/min
drilling hole diameter φ38-42mm
max drilling depth 6m
fuel consumption =1.5l
mixture ratio of gasoline and lubrication oil(in volumes) 12:01
end of drill rod dimensions hex 22*108mm
rotation speed of drill rod >=200 rounds/ min
clearance of spark plug 0.5-0.7mm