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The Driller's Choice

Rock Drill R412 – Limited Access Drill Rig

The Rock Drill R412 Drilling Rig is a compact drilling unit for limited access drilling sites for geothermal and micro piling applications. Geothermal setups for mud or air drilling available. Standard features include Gate Clamps, separate power unit, width adjustable crawler tracks, adjustable jack legs and high torque JT200 Series Drill Head.

  • Height 10' 11" (3,342 mm)
  • Mast Stoke 7' 10" (2,388 mm)
  • Pullback 22,000 lbs (10,000 kg)
  • Weight 3,300 lbs (1,500 kg)
  • Clamps Multiple options available

Watch the Video

Total Stroke
Wide Crawler Tracks
Speed Rotary Head

The Rock Drill R412 Drilling Rig is a powerful limited access drilling rig with low maintenance requirements. Built to handle high torque, restricted access drilling projects the Rock Drill R412 is a versatile drilling unit.

With modular drill head and clamp system options the Rock Drill R412 can be optimized to increase penetration rates even in the worlds toughest drilling conditions.


The JT200 Series Drill Head was first engineered and built in 1992 for high torque drilling applications. To reduce wear and breakdowns the JT200 drill head was built with a solid main shaft. This increased it’s durability and it has since stood up to some of the toughest drilling conditions in the world. 

  • Exchangeable motors offer various torque / rpm combinations 
  • Hardened internal components last longer in production drilling applications 
  • Single drive shaft reduces wear and maintenance requirements.
  • Engineered simplicity increased power without increasing size.
  • Extended durability reduces the need for up to three competitor drill heads, reducing carbon emissions.
Rock Drill R412


  • Foundation
  • Geothermal
  • Water Well
  • Micro piling
  • Underpinning
  • Pre-drilling
  • Geotechnical


System Pressure3,000 psi206 bar
Max Flow47 gpm 179 lpm
Max Pullback22,000 lbs10,000 kg
Max Pushdown16,000 lbs7,257 kg
Engine Power90 hp70 kW
Fuel Tank31 gallons 117 ltr
Hydraulic Tank65 gallons 248 ltr
Cooling SystemLiquid Cooled
Max Torque10,400 ft-lbs with JT20514,000 Nm
Max Speed205 rpm with JT222-M
Through Bore2-3/8” 60 mm
Speeds2-Speed Variable
Height (Drilling Position)10' 11"3,342 mm
Height (Transport Position)59"1,499 mm
Length (Drilling Position)83" 2,108 mm
Mast Stroke7' 10"2,388 mm
Weight3,300 lbs1,500 kg
Width34"-52"863-1,320 mm
Track Length61" 1,550 mm


Rock Drill R405
Rock Drill M106
Rock Drill M207
High torque drill head
JT200 High Torque


Mincon Group plc is a global engineering business specialising in the design, development, manufacture, and service of rock drilling tools for a variety of applications.

Originally founded in 1977 in Shannon, Ireland, it now has a worldwide presence, with customer service centres and factories across the Americas; Europe and Middle East; Africa, and Asia Pacific. 


Mincon Group plc- The Driller's Choice ™ 2021

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