DB311 Secondary breaking drill rig

Sandvik DB311 is a versatile secondary breaking unit designed to reduce large boulders and improve the ore flow in mass mining operations. The rig is a self-contained diesel-hydraulic carrier with on-board water tank and large air compressor for air-mist flushing. A robust telescopic boom with double rotation actuators and compact feed enables easy positioning within confined spaces at drawpoints, while the high-frequency rock drill enables fast penetration rates.


  • Well-protected canopy/cabin for improved safety
  • Compact carrier for flexible mobility
  • No connection requirement for external power or water enables fast set up and takedown
  • High-frequency rock drill for superior productivity
Technical data
Breaking method Drill only
Self-contained carrier, diesel power 100 kW
Rock position On ground and hangup
Hole length Up to 2230 mm
Hole diameter 43 - 51 mm
Weight 15,000 kg
Depending on options
Boom 1 x B26B NV