Sandvik DT821 is a two boom electro hydraulic jumbo for fast and accurate drilling in tunneling and cavern excavation. The hydraulic controlled drilling system with added automatic functions and optional instrumentation enable productive and high quality excavation. The RD520 rock drills deliver superior performance with high consumable life.
Sandvik SB90 universal booms have a large optimum shaped coverage and full automatic parallelism. In addition to face drilling the unit can also be used for crosscutting and bolt hole drilling. An optional utility boom for bolting and utility works is available. The powerful 4-wheel-drive center articulated carrier ensures rapid and safe tramming with good balance.