YN27 Hand Held Rock Drill
The Internal Combustion Rock Drill Type YN27 is a very efficient machine with the characters of the structure is very compact, less of the- easy-to-damage-parts, and very easy to control. It can adapt to these outside situations there is no water and electronic power. It is a kind hand held drill built up with gasoline engine, air pump, rock drill and the rotation plumbum equipment for running or stop. It can be used as a tool for breaking, percussive drilling, tamping besides rock drilling.
| Technical specifications | |
| Weight of main machine | 27kg |
| Overall dimensions(L*W*H) | 746*315*229mm |
| Type of engine | Single cylinder, air cooled two strokes |
| Cylinder diameter*stroke of piston | Φ58*70mm |
| Rotation speed of engine | ≥2450rpm |
| Displacement of engine piston | 185cm³ |
| Type of carburetor | hand needle valve, floatless type |
| Ignition system | controllable silicon, contactless system |
| Drilling speed (mean value of five holes) | ≥250mm/min |
| Drilling hole diameter | Φ28-42mm |
| Max drilling depth | 6m |
| Fuel consumption | ≤0.12L/m |
| Tank capacity | ≥1.5liter |
| Mixture ratio of gasoline and lubrication oil (in volumes) | 12:01 |
| Drill rod and breaker shank | Hex22*108mm |
| Rotating speed of drill rod | ≥200rounds/min |
| Clearance of spark plug | 0.5-0.7mm |
