Sandvik Mining and Rock Technology has developed a new surface top hammer drill rig, the Commando DC300Ri, which is suitable for various construction applications. This new machine has a vast hole size range (from 38 to 64 mm) using R28, R32 and T35 MF-rods. It is equipped with four-wheel drive motors and oscillation, ensuring excellent mobility and stability in difficult terrain.
Together with a new boom structure and an HL300 rock drill, the Commando DC300Ri offers high productivity and low operating costs in challenging environments. This fully radio remote-controlled, rubber tyred drill rig features four tramming motors with maximum tramming force of 43 kN in total. Rubber tyres and the ±10 degree oscillation contribute to the machine’s great manoeuvrability.
A new re-enforced boom structure with extended swing and reach results in 20% larger coverage area (compared to earlier models) equalling 12 sq m. A flushing air capacity of 3 cu m/min allows a deeper hole depth with larger hole sizes, and the 24-V electric system adds durability.
The advanced iTorque drilling control system available in its size class makes the Commando DC300Ri top-of-the-line in drilling performance and guarantees longer steel life. The intelligent compressor control system and new Cat 3.6 74.4-kW Tier 4F / Stage 5 engine contribute to high fuel efficiency; adding up to more than 30% improvement compared to earlier models in the same size class, said Sandvik. The machine is also available with a Tier 3 engine.
The Commando DC300Ri follows the same modular design as other smaller Sandvik next generation surface drill rigs. Such a design ensures high uptime with easily accessible service points, on-board diagnostics and small transportation dimensions. Being only 2.85 m in height, the rig can be quickly and easily transported from site to site on a small truck or even a trailer. It has a width of 2.35 m and length of 5.7 m.
Wide hole range and application specific on-board options make the Commando DC300Ri a multipurpose drill rig. It suits various civil construction works, such as road and railroad jobsites, trenching, channelling and different foundation works. The extended reach and the optional hydraulic rollover, which enables the feed to rotate 360 degrees, make the machine also a good fit for dimensional stone drilling and secondary breaking.
With smaller hole sizes, the Commando DC300Ri is ideal for tunnelling applications as well. The hydraulic rollover is a necessity in bolting and grouting, and the optional one-rod adding system gives flexibility and safety. A special fast-tramming option for tunnelling allows the drill rig to keep up with the other fast-moving machines underground. Other essential options for tunnelling include the exhaust gas purifier (for Tier 3 engine), water flushing and LED lights.
What’s more, the Commando DC300Ri can be further equipped with several intelligent options to suit specific needs, such as auto-aligning, SanRemo remote monitoring and Remote Screen.