Tri-mach Excavator mounted DTH Drill mast KP-300

The Tri-Mach Excavator Mounted DTH Drilling Mast converts a standard excavator into a powerful and highly versatile drilling unit. Designed and manufactured in Finland, the system reflects Nordic engineering principles: simplicity, durability, and dependable performance in demanding ground conditions.

Modular Drilling Power
Excavator Integration
dependable performance

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Key features of Excavator Mounted DTH Drill Mast

Modular mast system – length adjustable from 2–15 m with bolted extension sections.
Built for heavy DTH drilling – frame engineered to handle continuous load and hard rock conditions.
PK-1200 rotary head – 12 kNm torque, 60 RPM, API REG 4-1/2” BOX, integrated air swivel.
High extraction force – 100 kN pull-back for demanding casing and anchoring work.
Quick coupler interface – compatible with common S70 / S80 adapters.
Radio remote control – drilling operated from a safe position with clear visibility to the mast.
Side-view angle piece (optional) – 90° adapter to make the mast visible directly from the cabin.
Large tilt range – mast tilt +86° to −14.5° (customizable up to 90°)
Robust Finnish manufacturing: Built in Finland for durability and long service life in heavy workshop use

DTH Mast Drill – Technical Specifications

Specification	Value
Mast length	2–15 m (bolted extensions)
Maximum extraction force	100 kN (10 tonnes)
Attachment	Quick connector (S70 / S80)
Total weight (with PK-1200)	Approx. 1600 kg
Hydraulic pressure (max)	200 bar
Hydraulic flow (max)	310 l/min
Control system	Radio remote control

Excavator mounted Drill Mast – Available Options

The system can be configured with several optional features:

Auxiliary winch
Tilting rotary head
Mast tilt range +86° to −14.5° (customizable up to 90 degrees)
90 degrees sideways angle piece (to make drilling system visible from excavator cabin)
Hydraulic clamping system
Pile driving hammer attachment
Top Hammer attachment (for example for SDA anchoring)

This flexibility allows the same base machine to perform multiple foundation and drilling tasks, such as pile driving or SDA anchoring.

Tri-Mach PK-1200 Rotary Head – Technical Specifications

Specification	Value
Maximum rotation torque	12 kNm
Maximum rotation speed	60 RPM
Total weight	190 kg
Outlet	API REG 4-1/2" BOX
Integrated inlet air swivel	Yes
Air inlet connection	Configurable (standard G2 BOX thread)

One Mast — Multiple Applications

The Tri-Mach modular drilling mast is designed as a long-term platform rather than a single-purpose attachment. By combining modular mast sections, interchangeable drilling systems, and robust Finnish engineering, contractors gain a flexible tool capable of adapting to changing jobsite demands.

Piling casing drilling for diameters 90mm – 323mm
Anchor casing DTH drilling
Rock Drilling with DTH
Pile Driving (with hammer attachment)
SDA anchor drilling (with top hammer attachment)

Areas We Serve

We serve rig operators, site and project managers and drilling contractors across Finland, Sweden, Norway, Denmark, Switzerland, Germany, Austria, the United Kingdom, Italy, Iceland, Poland, Estonia, Latvia, Lithuania, Usa, Canada and Australia providing fast delivery, technical support, and customized DTH solutions for Northern and Central European ground conditions.

Compatible Products

DTH Rotary Heads
DTH Drill Rods
DTH Hammers
DTH Ring Bit Drilling Systems for Casing Advancement (Radial Flush)
DTH Ring Bit Set for Casing Advancement
Large ID Ring Bit Systems

FAQ: Excavator Mounted DTH Drill Mast

A modular drill mast allows the drilling system to be configured with bolted mast sections, enabling adjustable mast lengths typically ranging from 2 to 15 meters. This flexibility allows contractors to adapt the excavator-mounted DTH drilling attachment precisely to site conditions instead of relying on a fixed-height drilling rig.

Short mast configurations are ideal for drilling in restricted environments, such as beneath bridges, inside industrial facilities, under power lines, or in urban construction sites with limited overhead clearance. Longer mast setups can be quickly assembled when deeper drilling capacity or longer casing installation is required, maximizing productivity on open job sites.

The modular design also improves transport logistics, as mast sections can be moved separately and assembled on-site, reducing mobilization challenges and enabling access to difficult locations. By using one adaptable drilling system instead of multiple rigs, contractors achieve higher equipment utilization and lower operating costs.

01. An excavator-mounted DTH drilling attachment combines the power of Down-The-Hole (DTH) drilling with the flexibility of a standard excavator, allowing contractors to perform drilling operations without mobilizing a separate drilling rig.

02. This solution significantly reduces transport costs, setup time, and site logistics, especially on infrastructure, piling, anchoring, and foundation projects. Because the attachment uses an existing excavator carrier, operators benefit from improved accessibility in confined or uneven job sites where conventional drilling rigs may struggle.

03. Modern excavator-mounted DTH systems also offer high torque rotary heads, adjustable mast lengths, and precise positioning, enabling efficient drilling in hard rock, boulders, and mixed ground conditions while maintaining strong productivity.

Excavator-mounted DTH drilling attachments are designed for versatile drilling applications across construction, infrastructure, and geotechnical projects. They are particularly effective in hard rock and heterogeneous ground formations where reliable penetration and controlled drilling are required.

Typical applications include:

Micro piling and foundation drilling
Casing advancement and ring bit drilling
Rock anchoring and soil nailing
Horizontal and inclined drilling
Road, railway, and utility crossings
Quarry and slope stabilization work

Thanks to modular mast design and adjustable drilling angles, these attachments allow contractors to perform vertical, inclined, and limited horizontal drilling using a single machine platform, improving equipment utilization and project efficiency.

Do you have any further questions? Please feel free to contact Matias!

Matias Niemeläinen

matias.niemelainen@trimach.fi
+358405892446