Medium Hydraulic Drill

MHD
Bigger Jobs Deeper Drilling
Built for Foundation Work

The MHD is Spiradrill's powerhouse rig designed for heavy-duty foundation projects, soil bores, and casing jobs that demand high torque and deep capacity. It offers all the ease of use Spiradrill is known for — with added strength, reach, and drilling performance for larger scale operations.

View Specs and ConfigurationsReach Out Today
50–120′Max Pile Depth
144"Max Pile Diameter
65,000ft-lbs Rotary Torque
225 HPJohn Deere Engine
MHD Medium Hydraulic Drill

Built Different

Why Choose the MHD

The MHD is built to take on large-scale foundation work that smaller rigs cannot handle. More powerful, more capable, and ready for tough terrain — making it the go-to rig for contractors who need depth, diameter, and reliability without added complexity.

Heavy-Duty TorqueUp to 65,000 ft-lbs of torque for tough soil, rock, and casing jobs.
Deep Drilling CapacityReaches 50 to 120 feet — ideal for bridges, overpasses, and infrastructure foundations requiring serious depth.
Wide Diameter OptionsAccommodates augers up to 144" diameter to handle larger bore requirements on demanding projects.
Track-Mounted StrengthOn and off-road track-mount with track configurations built for jobsite demands including rough terrain.
Made for FoundationsOptimized for projects requiring reliable, deep structural support in variable conditions and soil types.
Joystick ControlsSame intuitive joystick control system as the LHD — minimal learning curve despite the increased power and capability.

Technical Data

MHD Specs

Exact specs vary by configuration. Contact us to discuss your specific project needs.

Performance

Rotary Torque 65,000 ft-lbs
Max Pile Depth 50–120 ft
Max Pile Diameter 144″
Max Kelly RPM (Low Range) 18 RPM
Max Kelly RPM (Mid-Range) 45 RPM
Spin Off RPM (Hi Range) 140 RPM

Machine

Crowd 62,832 lbs
Main Winch 23,000 lbs
Aux Winch 12,000 lbs
Fuel Tank 70 gallons
Engine John Deere 6068 225 HP

Configurations

Drill Depth Working Height Kelly Bar Round Kelly Bar Square # of Stages
50′ 30′ X 2
70′ 30′ X 3
90′ 39′ 6″ X 3
120′ 47′ 6″ X 2
MHD working dimensions diagram
MHD travel dimensions diagram

Accessories and Add-ons

  • Auxiliary winch
  • Pro heat
  • Enclosed cab
  • Toolboxes and lighting
  • Telemetry package for remote monitoring
  • Outrigger pad storage
  • Water tank, and more

Kelly Bars: Round vs Square

Round Kelly bars use a manual locking system and perform best in hard or rocky ground. Square Kelly Bars feature a friction lock and are ideal for softer soils, offering quicker alignment and greater flexibility. Spiradrill rigs support both, so you can match your bar to the job.

Real World Use

MHD Common Applications

01

Deep Foundation Drilling

The MHD is a powerful hydraulic drilling rig built for deep foundation work on bridges, overpasses, and commercial structures. Its high torque and depth capacity make it ideal for challenging soil and rock conditions.

02

Utility Pole and Substation Installation

Engineered for heavy-duty utility drilling, the MHD is trusted for installing deep utility poles and drilling in substations where precision and power are critical.

03

Rat Hole and Conductor Casing

The MHD supports oilfield and energy projects with reliable rat hole and conductor casing capabilities. It delivers consistent results with the depth and torque required for demanding drilling environments.

04

Infrastructure and Commercial Construction

From retaining walls to large commercial footings, the MHD delivers the power and depth capacity needed for serious infrastructure projects across varied site conditions.

Get in Touch

Ready to Put the MHD to Work on Your Next Job

Our team is ready to answer your questions, walk you through configurations, and help you find the right setup for your operation.