China Manufacturer Yn27c Internal Combustion Rock Drill

Product Details

1.Engine: The engine is a hand operated, single cylinder and two stroke petrol engine with air cooling, re-flux air conversion, no contract ignition, and no floating-type carburetor. It is conposed of control parts,shield parts,magneto parts and piston parts and cylinder parts.
2.Air compressor: The engine piston and hammer piston are mounted separately in the upper and lower place of the cylinder. These two pistons move up and down synchronously. The hammer piston and the bigger bore of the cylinder form a compression chamber, which together with air inlet and outlet valves and ventilator valves, form the air compressor. It is composed of hammer piston parts and cylinder parts.
3.Rock drill: It is composed of hammer piston parts,rotation mechanism parts, drill chuck parts.

Technical specifications
1.Weight of main machine 27kg
2.Overall dimensions 746*315*229mm
3.Type of engine single cylinder, air cooled two strokes
4.cylinder Diameter X Stroke of piston 58 x 70mm
5.Rotating speed of engine ≥2400 r/min
6.Displacement of engine piston 185cm3
7.Type of carburetor hand needle valve, no floating type
8.lgnition system controllable silicon, contactless system
9.Drilling speed: (mean value of five holes) ≥2500 mm/min
(After holing, drill Φ34, with drill rod of 600mm in length, is drilled certically downward into medium hard granite (f=8-12) to make five holes in succession. The mean value of the five holes are counted as the speed.)
10. Max drilling depth: 6 m
11.Fuel consumption: ≤0.12 L/m
12.Tank capacity: ≥250mm/min
13.Mixture ratio of gasoline and lubricating oil (in volumes): 12:1
14.End of drill rod dimensions: hexagonal 22 x 108 mm
15.Rotating speed of drill rod: ≥200 r/min
16.Clearance of spark plug: 0.5~0.7 mm