Rotary drilling rig DD422i

automatictelescopic

Sandvik DD422i has the widest range of automatic drilling functions, able to achieve reduced over-breaking with maximized pull-out per blast. It’s the ideal choice for underground mine development and small-scale tunneling. Optimized working environment Optimize your operator’s comfort with a modern, ergonomic cabin, designed to improve visibility while reducing noise levels. TFX telescopic feed In limited spaces where both long and short rods are required, the TFX telescopic feed allows multipurpose drilling. Bolt hole drilling, face drilling, bolt installation and cross-cuttings are all possible. Dual controls In limited spaces where both long and short rods are required, the TFX telescopic feed allows multipurpose drilling. Bolt hole drilling, face drilling, bolt installation and cross-cuttings are all possible.