LSGT+HDA Soil Sampling Drill

The LSGT+HDA, the newest of Lone Star Drills’ geotechnical rigs, was designed to address the growing demand from customers to be able to access remote or environmentally sensitive areas, where the ground can’t be disturbed by a large truck and trailer. The drill is based on the design of the LST1G+HDA, with added tracks and hydraulic leveling control. Travel is remotely controlled, with a 50-foot tether cord included in case of battery power loss in the remote. The drill comes standard with a 140-pound automatic hammer to ensure accurate SPT sampling as well as easy operation. This model comes standard with a 3,000-psi hydraulic system and 25-horsepower Honda iGX800 gas engine. The drill’s 12.5-gpm hydraulic power pack achieves a rotary speed of 100 rpm. The system provides a hydraulic winch with 1,500 pounds of pull for raising the automatic hammer and sampling string. A diesel option is also available.

  • Drilling Depth: 100 ft (30.5 m)
  • Borehole Diameter: 6 in (15 cm)
  • Pull/Push Back Force: Up to 8,500 lbs (3,855.5 kg)
  • Soil Types: Sand, clay & soft rock formations
  • Applications: Soil testing, core sampling, geotechnical engineering, standard penetration testing (SPT) and well monitoring



Soil Sampling Kit Included

Drilling Depth

Borehole Diameter

Dimensions LxWxH

Operating Weight

Auger Diameter

Auger Length

Pull/Push Back Force

Max Drilling Torque

Drilling Angle


Transport Options


Fuel Tank Capacity



Rotary Controls

Draw-works Controls

Hydraulic Power Source

Hydraulic Reservoir

Oil Cooler


100 ft (30.5 m)

6 in (15.2 cm)


4,750 lbs (2,310 kg)

3 - 8 in (7.6 - 20.3 cm)

3, 4 or 5 ft (.91, 1.22 or 1.52 m)

Up to 8,500 lbs (3,855.5 kg)

1,100 ft*lbs (1,491.4 N m) @ 2,800 psi

Vertical only

Heavy-duty welded steel

Truck bed or trailer mounted

Honda iGX800 25 hp (18.64 kW)

5 gal (18.9 L)

100 rpm @ 12.5 gpm (51.1 L/m)

1.25-in (3.18-cm) box connection standard, 1.13-in (2.85-cm) or 1.63-in (4.13-cm) in hex optional


4-way spring-centered valve, bypass flow control on push down, circuit provides adjustable weight on bit


5 gal (18.9 L)

Oil cooler with 10 in (24.4 cm) fan