Sandvik Introduces the New DD212 Development Drill

Sandvik Mining and Rock Solutions introduces the new Sandvik DD212, a compact and intelligent single-boom, electro-hydraulic drill for tunneling and mining development in narrow vein drifts. This versatile new drill is an upgrade of the Sandvik DD210 development drill rig.

DD212 drilling. Source: Sandvik

Sandvik DD212 is designed for narrow vein operations, delivering both high-level productivity and low cost of ownership. The DD212 is a highly anticipated rig for the Australian narrow vein market; the first unit ordered by an Australian contractor will arrive in March 2021, followed by several more deliveries later in the year.

New features deliver real benefits

Sandvik DD212 is a compact drill solution enabling mines to open smaller tunnel sections and benefit from increased levels of productivity with more meters advanced. Based on factory and field tests, the Sandvik DD212 delivers up to 20% reduction in boom positioning time per face and about 15% improvement in drill penetration rate. Its 3% improved pull out ratio can result in up to 10 cm greater advance per face when compared to similar equipment.

The machine reached 93% mechanical availability during its mine site test period, accumulating 300 hours of percussion within 2.5 months of operation. The drill provides performance with net penetration rate, drill quality and rock tools improvements, with zero drill rods jammed during the test period.

Sandvik DD212 is equipped with new features:

  • New drilling control system THC562 with torque control and reaming hole selection, that enables the DD212 to provide increased drilling performance, yet reduces the wear on both the rock drill and rock tools.
  • New intelligent boom SB20i – for accurate hole electronic positioning enabling the navigation of drill feed and tool, with automatic parallelism and instrumentation for hole angle measurements. The boom offers large face drill coverage from 6m² to 25m², thanks to the one-meter boom extension and the two rotation actuators’ narrow vein type.
DD212 front view. Source: Sandvik

The right rig for the right job

Sandvik DD212 comes with specific features and benefits for the application for which it is designed. The development drill has an extended TF feed 12ft. rod which optimizes advance/round, whilst its RDX5 rock drill provides fast drilling cycle time and low operating costs. The specific compact and versatile CFX telescopic feed can retract from 6ft. to 12ft. and enhances multipurpose operations in 2.5m x 2.5m – 3.5m x 3.5m tunnel sizes.

The DD212 delivers accurate face drilling, cross-cutting and bolting and enables mines to open smaller tunnel sections, reducing overbreak, dilution and drilling costs.

The new DD212 brings operational safety and versatility for tackling different applications, precise electronic positioning, ergonomic operator interface, data monitoring, all leading to a higher pull out ratio and reduced tool consumption.

DD212 side view. Source: Sandvik'
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