DU431 Articulated in-the-hole production drill rig

Sandvik DU431 is a fully mechanized and compact in-the-hole (ITH) longhole drill fitted with an onboard booster and designed for underground mining in 3.2 x 3.2 m or larger production drifts.

This rig is capable of drilling vertical and inclined fans and single or parallel Ø89–254 mm (3½"–10") longholes up to 100 m (330') in depth, using 3" to 8" in-the-hole hammers and Ø76–127 mm (3"–5") drill pipes.


  • Compact size and heavy-duty articulated carrier for good mobility and stability
  • On-board reciprocating air booster improves unit mobility and increases productivity
  • Highly versatile boom with wide swing and tilt angles, and the 210° feed pivot swing
  • Field proven CANbus control system for improved performance, hole accuracy and tool life
  • Available in configuration for reverse circulation
  • Wide range of feed and pipe arm configurations
  • The rear carrier layout allows safe and fast access to service points from ground level