Sandvik DL421: robust efficiency in underground drilling

Sandvik DL421 is a versatile longhole drill rig engineered for large-scale production drilling in underground mines. It is designed for vertical and inclined plane rings and fans, as well as parallel long production holes and long single holes.

Features

360° drilling module rotation

With 360° boom rotation and wide tilt angle, DL421 offers good usability in a wide variety of drilling applications.
Drilling accuracy

Instrumentation and automation provide accurate drilling data for maximum accuracy and performance.
Safe working environment

The carrier is designed for good visibility and stability, ensuring safe tramming in mine drifts. The FOPS/ROPS cabin, or FOPS canopy (option), protects the operator from hazards.
Readiness for AutoMine® Single Drill level

AutoMine® Single Drill level is a tele-remote system enabling an operator to remotely control a single drill, in drilling and ring to ring tramming.

Product specifications

Download DL421 technical specification sheet (PDF)

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DL421 operating manual and spare parts

Operating manuals and spare parts can be found on the My Sandvik customer portal.

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Boom coverage: 3 m
Hole length: Up to 54 m
Tramming type and distance: Hydrodynamic transmission (diesel) B4.5 (110 kW, Stage IIIA)
Hole diameter: 64 - 115 mm
Boom type: Frame, horseshoe
Drift size (H x W): 3.6 x 3.6 m
Rod length: 1.22 - 1.83 m (4.00 - 6.00 ft)
Drilling power: HPP1590, 90 kW
Controls type: TAS
Automation and teleremote availability: One-hole automation (option), Fan automation (option), Teleremote drilling (option)
Weight: 22,000 kg (depending on options)

Learn more about DL421 features

Proven CAN control system

This control system allows set-ups for any rock conditions in up-and-down-hole drilling. It offers a user-friendly operating interface and continuous data collection for productivity improvement, ensuring accuracy and speed in feed and rotation control.

Interactive fault-finding system

The fault-finding system reduces downtime, which increases productivity and efficiency.

Related Products and Services

Parts and components

Rock drills

Rock drills are a highly demanding component to design and manufacture. With decades of dedication and engineering work we have developed our rock drills for harsh conditions and heavy-duty work.

Technology

Remote monitoring service

Remote monitoring service uses intelligent technology that enables the prevention and prediction of breakdowns before they happen.

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Automation

Improve efficiency, profitability and operator safety

Software systems that help you monitor your machines, giving you a full overview of your fleet and enabling you to control and optimize your operations.

Learn more about our Automation offering

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