The Internal Combustion Rock Drill Type YN 27C has functions of drillhole,cleavage, bruising, tamping and chiseling. It is widely used in mine, road construction,quarrying, national defence works, etc.
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Weight of main machine |
27 kg |
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Type of carburetor |
Hand needle valve, no floating type |
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Ignition system |
Controllable silicon , contactless system |
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Displacement of engine piston |
185 cm3 |
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Rotating speed of engine |
≥2450 r/min |
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Rotating speed of drill rod |
≥200 r/min |
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End of drill rod dimensions |
Hexagonal 22x108 mm |
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Max drilling depth |
6 m |
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Tank capacity |
1.14 L |
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Drilling speed |
≥250mm/min |
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Mixture ratio of gasoline and lubricating oil(in volumes) |
12:1 |
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Clearance of spark plug |
0.5～0.7 mm |