Description
Our hydraulic double boom jumbo is widely applied for construction of roadway, tunnel and culvert in mine, metallurgy, water, power, railway, highway and other projects. This drill jumbo can drill the working face, roof, side and floor of the roadway. It is usually used to drill blast holes, as well as bolt holes when mounted our patented propeller.

Features
1. Configured with hydraulic-driven double boom drilling device, our double boom jumbo can reach drilling speed up to 2 m/min.
2. It can position and drill precisely.
3. The design of telescopic boom enlarges drilling area.
4. This equipment has characteristics of compact structure, low center of gravity, high flexibility, stable performance and strong gradeability.
5. Our double boom jumbo is configured with anti-jamming device to enhance its reliability and drilling speed.
6. This drill jumbo consumes less energy and causes lower noise when drilling, which greatly promotes construction efficiency and quality.
7. It is equipped with automatic cable drum, which can release and collect cables flexibly. This configuration helps to save labor costs and improve safety.
8. The double boom jumbo adopts France Montabert HC50/HC25 hydraulic rock drillthat features strong drilling power, fast drilling speed, low equipment abrasion, low breakdown rate, etc.
9. The spiral cylinder is from America Helac Corporation, and it features high torque, strong bearing capacity, no position offset, compact structure, durability, etc.

Parameter

Model	Unit	CMJ2-17S	CMJ2-17	CMJ2-30
Adaptive cross section	㎡	27	17	30
Hole depth	mm	3000	3100	3100
boom		2
Hole diameter	Mm	Φ43	Φ43	Φ43
Min. turning radius	mm	6900	6000	6500
Working range (w × h)	mm	2800 × 2800-5700 × 5200	2000 × 2000-5000 × 4200	3000 × 3000-6000 × 5000
Stabilization	mm	1980
Water pressure	Mpa	0.8-1.2	0.8-1.2	0.8-1.2
Drill tool	Mm	Drill rod: B28, drill bit: Φ43	Drill rod: B28, drill bit: Φ43	Drill rod: B28, drill bit: Φ43
weight	kg	13100	8600	9800
Dimension during transportation	Mm	9750 × 1650 × 2370	9750 × 1650 × 2370	9750 × 1650 × 2370
(L × W × H)

Note
We have both explosion-proof and non-explosion-proof double boom jumbo for your selection.

Maintenance of Double Boom Jumbo
A. Daily or frequently required maintenance
B. Periodical maintenance
C. Maintenance adjustment in particular case
Sometimes we need to adjust the maintenance period and frequency according to different conditions like temperature, humidity and workload, etc. to better protect the machine.