DD-155T Mid-Size Directional Drills

. Posted in Mid-Size Directional Drills

The Perfect Rig for Urban Areas!

Features And Benefits

Utilizes an off-board mud pump so all engine power goes to the thrust and rotation to ensure maximum production

Advanced Quiet Pak technology with variable cooling: hold a conversation next to the rig at full throttle!

The off-board cabin increases operator visibility and reduces operator fatigue from vibration

12° to 22° drilling angle

A large display screen provides vital readouts to monitor operational loads

Equipped with an optional multi-pipe loader or single pipe operation

20 ft. (6.1 m) drill pipe

30,000 ft. lbs. (40,674 Nm) of rotary torque: the floating carriage extends the thread life of the drill pipe

Maximum rotary speed developed to work with large HDD tooling

DD-155T Performance Specifications

Power Train
Engine Cat C7.1, Tier 4i or Cat C6.6 Tier 3 (depending on country of purchase)
Rating 275 HP (205 kW)
Fuel Capacity 120 U.S. Gallons (454 L)
Hydraulic Capacity 145 U.S. Gallons (549 L)
Advanced Quiet Pak® Technology with Variable Cooling


Carriage System
Carriage System Rack and Pinion, (4) Pinion Drive with Adjustable Force Limiter
Maximum Thrust/Pullback 155,000 lbs (70 Tonnes)
Maximum Carriage Speed 150 ft. (45.7 m)/minute


Rotary Drive
Rotary System (1) Pinion and Gear Drive with Infinitely Variable Torque
Maximum Rotary Torque 30,000 ft-lbs. (40,674 Nm)
Maximum Rotary Speed 100 RPM
Rotary Motor (1) Hydraulic 250 cc Axial Piston/Variable Displacement
Fluid Course 2 9/16 in. (65 mm)
Maximum Flow 450 U.S. Gallons (1700 L)/minute flow
Maximum Pressure 1,500 psi (1031 bar)
Misc. Wiggle Steer®, Adjustable Torque Limiter, Digital Thermometer


Wrench Design Open-Top with 10 in. (254 mm) Separation
Clamp/Grip Range 2 7/8 in. – 6 5/8 in.


Working Range
Drill Angle 12° - 22°


Lift Rating 4,300 lbs. (1950 kg)


Drill Pipe
Length 20 ft. (6.1 m)


Drill Rig Mounting
Travel System Self-Propelled on Undercarraige Track Crawler Assembly
Track Speed 1.75 mph (2.8 kph)
Ground Bearing Pressure 8.3 psi (0.57 bar)


Safety Features
  • Es!Lok – Exit Side Lockout System
  • ZAPALERT Electrical Detection Device
  • Emergency Shutdown Switch at Operator's Console
  • Rod Loader with staging area
  • Adjustable rear working platform for wireline


Drill Rig Weight w/o crane or foot 57,000 lbs. (26,000 kg)


Length 37 ft. 6 in. (11.4 m)
Width 8 ft. 1 in. (2.468 m)
Height 10 ft. 6 in. (3.2 m)