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Drill blasthoes for tunneling construction, In coal mine, nonferrous metal mine etc, High speed, Two drilling booms, Self-return - details see: https://www.machineto.com/tunnel-construction-drilling-rig-10313666

CMJ2-17 All hydraulic crawler drilling crawler drilling jumbo is mainly used to drill blastholes for tunneling construction in coal mine, nonferrous metal mine, hydro-power station, railroad, highway engineering, etc, The jumbo is designed with two drilling booms, advanced hydraulic rock drill system, self-return and anti-jamming mechanism for making it has rapid drilling speed and high efficiency. Flexible mechanism can make the jumbo drilling on face, slope, roof, side wall and floor in underground mine or tunnels, and it also can drill anchor holes upward. With modular designed, this small compact jumbo has a low center of gravity, great mobility, remarkable stability and strong climb capability thus can improve working environment and get efficiency, quality development.

Model		CMJ2-17-A	CMJ2-17-B	CMJ2-17-C
Drilling spec.	Drilling speed	0.8-2m/min
	Hole size	φ33-43mm
	Length of steel rod	2.475m	2.975m	3.5m
	Hole depth	2.1m	2.6m	3.1m
Power system	Electric motor capacity	45kw or 55kw
	Voltage	380/660V or 660V/1140V
Weight & dimensions at transportation	Length	7500mm	7500mm	8400mm
	Width	1200mm
	Height	1750mm
Cross section	Total weight	8500kg	8900kg	9200kg
	Max. (W x H)	5.2m x 4.5m