The first model of Sandvik’s new generation of down-the-hole drill rigs, the Sandvik DI550, offers unique productivity and user comfort in 5 inch hammer drilling.
All businesses, but small and medium-sized quarries and contractors in particular, must continuously improve productivity in their operations with selection of the right machine for the job of utmost importance.
The Sandvik DI550 is the machine that meets this requirement. It is a down-the-hole drilling rig that features a 324 kW diesel engine and a 24.4 cubic metre compressor air flow at 24 bar pressure, making the machine a perfect match for the 5 inch DTH hammer.
This careful balance of power and hammer size results in a uniquely productive rig that keeps fuel consumption and operating costs to a minimum. Cost-effective performance is further enhanced by other advanced features, such as active diesel RPM control, optimized diesel RPM level during drilling and active control of compressor running temperature. 
Aside from high performance, the focus of the project to develop the new rig was on simple and comfortable machine operation. Featuring a modern, accurate control system with simple icon displays and comprehensive service information, the new DI550 enables seamless cooperation of man and machine.
Operator comfort is further enhanced by the rig’s modern, over-pressurized and ROPS and FOPS-certified cab with advanced ergonomics, efficient air conditioning and excellent visibility. The large windshield comes with a strong safety bar that is easy to open for cleaning.
The new, efficient dust collector with non-stop cleaning restricts the amount of dust emissions into the environment. The dust collector also improves filter lifetime, which reduces the need for maintenance.
Other features that translate into easy maintenance and thus low downtime include the open layout of the engine compartment, easy cooler cleaning, modular compressor control system and simplified electric system. All daily maintenance points are at ground level to simplify the process and improve safety of service personnel. A fast fuel filling option and large fuel tank further cut costly downtime.
The new DTH line has benefited significantly from Sandvik’s experience in top-hammer drilling solutions. For example, the two product lines share many solutions, components and test procedures. These similarities create clear advantages for service and maintenance.
The DI550 is designed to work at maximum performance when fitted with Sandvik’s RH550 hammers in sizes from 3” to 5”. The RH550 hammers come with bits ranging from 90 to 152 millimetres, with three different bit face designs. The Sandvik DI550 will be released in the market in the fourth quarter of 2010. A new feed and rotary head will be launched at the same time.

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