Dual-rod rock drilling

Control when the ground gets tough.

TERRA all-terrain directional drills deliver dual-rod rock-drilling capability for demanding, mixed and unpredictable geology.

Explore the range
All-terrain HDD

Built to maintain progress in difficult formations.

Conventional HDD rotates and steers a single drill string through softer and mixed ground. All Terrain uses a dual-rod system: the outer rod supports steering and rotation while the inner rod independently drives the rock bit. That extra control helps maintain progress through rock and difficult mixed formations.

Dual-rod configuration
Rock-drilling capability
Compact job-site design
Operator-focused control
TERRA range

Choose the all-terrain platform

TERRA-JET DJ 23 AT
TERRA

TERRA-JET DJ 23 AT

Approx. 11 t pullbackDual rod rock drillingUp to approx. 100 m* rock boreConfiguration-led tooling selection
Enquire →
TERRA-JET DJ 40 AT
TERRA

TERRA-JET DJ 40 AT

Approx. 18 t pullback8,000 Nm outer torque2,400 Nm inner torqueUp to approx. 200 m* rock bore
Enquire →

*Indicative bore lengths depend on ground conditions, tooling, bore geometry and machine configuration.

Application support

Specify around the complete project.

TA Drilling can help assess the machine, tooling, ground conditions and supporting systems together.

Ground conditions
Bore requirements
Tooling selection
UK support
Talk to TA Drilling

Which TERRA AT system suits your ground?

Request a quote