Tunneling jumbos

DT1231

Coverage: 211.00 m²
Hole length: Up to 6.18 m
Tramming type and distance: Hydrodynamic transmission - Diesel engine - OM904LA (110 kW Tier 3, Stage IIIA)

Sandvik DT1231 three-boom jumbo is designed for fast, accurate drilling in tunneling and cavern excavation. It is an advanced drill with added automatic functions and optional instrumentation to maximize productivity and high-quality tunneling.

Features

Optional utility boom

The optional utility boom is engineered for bolting and utility works, allowing the jumbo to install rock bolts or anchors for added support. This enhances the efficiency of the tunneling process and ensures the structural integrity of the tunnel.
Powerful RD520 rock drill

RD520 hydraulic percussive rock drill has an independent reversible rotation and low profile height, offering efficiency and high penetration rate. The rock drill has excellent serviceability thanks to its modular construction and visual wear indicators.
Universal roll-over SB150 booms

Designed for mechanized tunneling, drifting, cross-cutting and bolt hole drilling, these booms have a large optimum-shaped coverage and full automatic parallelism, eliminating the need for manual adjustments.

Product specifications

Download DT1231 specification sheet (PDF)

Coverage: 211.00 m²
Hole length: Up to 6.18 m
Tramming type and distance: Hydrodynamic transmission - Diesel engine - OM904LA (110 kW Tier 3, Stage IIIA)
Number of booms
Feed length: Fixed TF500 12 to 21 ft. or telescopic TFX 6-12 ft. to 10 to 16 ft.
Hole diameter (face drilling): 43 - 64 mm
Hole diameter (cut hole): 76 - 127 mm
Rock drill: RD520 20 kW
Controls type: THC561, hydraulic control
Weight: 46,000 kg (depending on options)

Learn more about DT1231 features

Optimal safety

The tunneling jumbo can be equipped with a FOPS cabin (option), offering noise and vibration insulation, which provides enhanced operator safety and comfort.

Diagnostics

Built-in diagnostics ensure consistent efficiency while enabling the recognition of potential maintenance issues at an early stage. This reduces overall downtime, allowing for high productivity levels for longer periods.