LST1A+ / LST1A+HD Soil Sampling Drill

The LST1A+ features an auger head drive in place of the water swivel found on the LST1 and LST1+, making it ideal for auger drilling and soil sampling. Its swivel base design swings the rotary aside for quick, easy access to the borehole. The unit is capable of drilling 6-inch boreholes up to 100 feet deep in normal soils using the standard auger and up to 50 feet with the hollow stem auger. An optional anchor kit allows the unit to push beyond the trailer’s weight.

The LST1A+HD has all the features of the LST1A+ but offers enhanced power and capabilities, with increased pullback/push force and as much as 1,100 foot-pounds of torque to handle challenging soils. Both models can be easily towed by an ATV or UTV, shipped fully assembled in a crate, or knocked down and palletized for less expensive transportation overseas or by truck.

  • Drilling Depth: 50 ft (15.24 m)
  • Borehole Diameter: 6 in (15 cm)
  • LST1A+ Pull/Push-Back Force: Up to 5,000 lbs (2,268 kg)
  • LST1A+HD Pull/Push-Back Force: Up to 8,500 lbs (3,855 kg)
  • Soil Types: Sand, clay & soft rock formations
  • Applications: Soil sampling, geotechnical testing

Drill Rig Package Includes

  • Honda 20-horsepower gas engine
  • Powerful 3,000-psi hydraulic system
  • Tool box & spare parts

Augers & Bits

  • 4- to 8-inch diameter D-series augers available in 3-, 4- or 5-foot lengths
  • 6-inch outside diameter (2.75-inch inside diameter) or 8-inch outside diameter (3.75-inch inside diameter) hollow stem augers
  • Standard point and blade for soft soil, carbide blade for medium to hard soil, and rock tooth auger for hardpan and weathered formations


  • Single axle
  • 3,500-pound (1,590-kg) rating
  • Towable by ATV or truck
  • Three leveling jacks
  • 2-inch ball coupler
  • Spare tire

Optional Components

  • Anchor kit to push beyond the weight of the trailer



Drilling Depth

Borehole Diameter

Pull/Push-Back Force

Operating Weight

Auger Diameter

Auger Length

Max Drilling Torque




Fuel Tank Capacity

Hydraulic Reservoir



50 ft (15.24 m)

6 in (15 cm)

Up to 5,000 lbs (2,268 kg)

1,750 lbs (793.8 kg)

3 - 8 in (7.6 - 20.3 cm)

 4 or 5 ft (1.22 or 1.52 m)

500 ft-lbs (678 N-m)

Heavy-duty welded steel

Honda GX630 20 hp (14.9 kW)

150 rpm at 10 gpm (37.9 L/m)

5 gal (18.9 L)

5 gal (18.9 L)

Trailer mounted


100 ft (30.5 m)

6 in (15 cm)

Up to 8,500 lbs (3,855 kg)

1,875 lbs (850.5 kg)

3 - 8 in (7.6 - 20.3 cm)

4 or 5 ft (1.22 or 1.52 m)

1,100 ft-lbs (1,491.4 N-m)

Heavy-duty welded steel

Honda iGX800 25 hp (18.64 kW)

100 rpm at 12.5 gpm (51.1 L/m)

5 gal (18.9 L)

5 gal (18.9 L)

Trailer mounted

All trailer-mounted drills can ship fully assembled in a 20-foot container or knocked down and palletized.