The new Cat MD6250 blasthole drill delivers optimum drilling efficiency in single- and multi-pass applications for both rotary and down-the-hole (DTH) modes. Featuring automated operation, the drill runs within ideal operating parameters for maximum bit life, hole accuracy, and reduced total cost of ownership.
The new MD6250 drill is application-built for efficient drilling of 10- and 12-m benches, including angle drilling for cast blasting, making it the ideal drill for mining, quarrying and heavy construction applications. A true global machine, it is EU compliant, GOST certifiable, AUS compliant, CSA certified, MDG15 and MDG41 aligned, meets emissions standards for any region, and meets over 30 ISO standards.
The flexible machine drills hole diameters reaching 150 to 250 mm with bit loads of 22 321 kg and 32 655 kg respectively for the 11.2-m and 13.7-m masts. The drill delivers single-pass hole depths of 11.2 m and 13.7 m, and the 11.2-m mast is capable of drilling multi-pass hole depths reaching 53.6 m, while the 13.7-m mast drills multi-pass depths of up to 37.9 m.
The MD6250 features angle drilling from 0 to 30 degrees in 5-degree increments. It has an approach angle of 15 degrees for easy ramp access and loading, while the machine is capable of climbing up to 26-degree grades to get to the bench. The drill can be equipped with either 600 mm triple grousers for hard rock applications or 750 mm triple grousers for working in soft rock.
The new MD6250 drill’s high-powered power train features the Cat C27 ACERT engine with a 655 kW power rating at 1800 rpm that can be configured to meet any emissions regulation for any region throughout the world.
Built for drilling in a variety of extremes, the MD6250 delivers reliable operation at elevations as high as 4 750 m. Standard ambient temperature operation ranges from -1° C to 52° C, while available arctic temperature packages enable working in subzero temperatures reaching -40° C.
The new MD6250 drill boasts a spacious FOPS cab with 3 m2 of floor space and integrated operator’s station. Rubber shock-mounts absorb mechanical vibration from drilling and lower exterior noise to the operator’s ear. Joystick controls with full instrumentation and dual 254-mm colour touch screen displays improve operator productivity.
A camera mounted on the mast provides the operator full view of the pipe carousel/top drive operation, while cameras at the front and left sides of the drill offer a 360-degree view from the operator’s seat for improved operating safety. A full-length window offers an unobstructed view of the drill deck, while large cab windows surround the operator to offer excellent visibility of the work area.