Sandvik DD421 is a two boom electro-hydraulic jumbo for fast and accurate drilling in drifting and tunneling of 8 - 60 m² cross sections.
The improved hydraulic control system with new features enables accurate drilling performance with efficient control.
The new Sandvik RD525 rock drill has proven to be an efficient drill with smooth penetration and powerful drilling performance.
Optimal coverage is achieved with the proven Sandvik SB60 booms. The drilling performance can be improved with optional instrumentation.