Internal Combustion Rock Drill Type YN30A is hand-oper-ating drill.It is mainly used for drilling blast holes in open air.It is also useful in breaking,shovelling, digging,splitting and tamping jobs.

Weight	28 kg
Diameter of engine piston	φ58 mm
Stroke of engine piston	70 mm
Rotating.speed of enging with load	2700??3000 rpm
Drilling speed	>=200 mm/min
Oil consumption	<=0.13 L/m
Max.drilling depth	6 m
End of tool shank	hex 22*108 mm
Front end of breaker	hex 22*108 mm