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Manufacturer of custom horizontal directional drills, equipment and tooling.
Manufacturer of custom horizontal directional drills, equipment and tooling.

UNI 250x400 Directional Drill

Quick Specs:


250000 lbs


40000 ft-lb


400 hp

Mud Pump

315 gpm

See Full Specification
Specification Sheet

UNI 250x400

Multi-Person XL Cab

Multi-Person XL Cab

Our Multi-Person XL Cab comes standard on a drilling rig UNI 250x400. It can comfortably seats up to two people with some leg room to spare. The new air suspension seat gives an increased range of adjustments over previous versions. It dramatically reduces horizontal vibrations, jolts and provides a greater number of operators with the ability to tailor their seating position for a more comfortable working day. The improved climate control system gives you the option to maintain the temperature desired by the operator. Our panoramic windows provide better visibility as well as the overall job site. Better visibility can equal less operator fatigue and more confidence in your work.

On-Board Mud Pump

On-Board Mud Pump

UNI 250x400 is eqpuiped with on-board mud pump. The pump is capable of delivering up to 315 gal/min and up to 1136 psi. The rig is also equipped with a Pressure Relief Valve for rod loading and unloading.

Rod Arm



Specification, Dimensions and Features:

Dimensions and Weight

Parameters USA Metric
Length 467 inch 1186 cm
Width 104 inch 264 cm
Height 125 inch 318 cm
Weight (w/o drill rods) 64500 lbs 29257 kg

Engine Specification

Parameters USA Metric
Make and model Turbo Diesel
Fuel Type Diesel
Gross Horsepower 400 hp 298.3 kw
Rated RPM 2200 rpm
EPA Certification Tier IV

Operational Specification

Parameters USA Metric
Thrust 250000 lbs 1112.1 kN
Pullback 250000 lbs 1112.1 kN
Spindle Torque (Low) 20000 ft-lb 27116.4 Nm
Spindle Torque (High) 40000 ft-lb 54232.9 Nm
Rotation Speed (Low) 50 rpm
Rotation Speed (High) 100 rpm
Operating Angle 16 °

Drill Pipe Specification

Parameters USA Metric
4 1/2" IF (NC-50 DS) 20 ft 6.1 m

Fluid Specification

Parameters USA Metric
Make and model Aplex SC-1170L
Flow (*Max) 315 gpm 1193.9 lpm
Pressure (*Max) 1136 psi 78.3 bar
Fuel Tank 142 gal 537.5 lit
Hydraulic Tank 154 gal 583.0 lit


Feature Available Notes
Automatic Rod Loader
Strike Alert Yes
Mud Flow Indicator Yes
Support Lights Yes
Air Hammer Ready Yes
Locating System Yes On-board remote display
Operator's Station Dual Glassed Cab (Heater & Air Conditioner, Aurora Digitrak Display, Video Camera with LCD monitor)
Auto Curve Yes
Wired Remote Yes Maneuver, load, unload and setup your rig
Wireless Remote Optional Control essential functions from safe distance
Wire Line Ready Yes
Crane Yes On-board crane to assist with loading and unloading
Rod Arm Yes Heavy-duty rod loader for fast and quick loading and unloading