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The Industry Benchmark


Direct Push Equipment

The 7822DT is equipped with many of the features Geoprobe® customers are accustomed to, and with many new advantages.



High Capacity Direct Push Machine

The Geoprobe® Model 7822DT is a high-capacity direct push machine with a narrow platform for limited access areas and a sufficient stroke for added work space under the hammer. It was designed with specific goals in mind for the technical driller. Dependability. Expandability. Performance. These rigs will help you adapt to changing work roles whether you’re focused on environmental, geotechnical, or exploration work. From the small footprint of the 7822DT, which makes for easy maneuverability, to the power under the GH60 Series hammer, we think you’ll wonder why you don’t already own this machine.

High Performance

“Due to the small access and overhead wires, we put our new 7822DT on the job immediately. We turned 8.25-in. augers to rock and drilled 8-in. air rotary to install a 4-in. monitoring well. We were impressed with the machine’s performance!”

Dan Sponseller
Operations Manager
Mechanicsburg, PA

78 Series Machine Applications

Angle Probing

Angle Probing

Easy probe placement makes the 78 rigs ideal for sampling next to or near foundations, or inside hard-to-reach places.



Turning augers for well installation and other environmental investigations is made easy with the power of the 78 Series machines and augerheads.

Concrete Coring

Concrete Coring

A 5-in. concrete core opens up the subsurface for sampling or monitoring well installation.

Cone Penetration Testing

Cone Penetration Testing

The augerhead torque allows insertion of ample-sized anchors to stabilze the machine. Up to 9 tons of push is typical for this platform.


Diamond Core Drilling

Diamond Core Drilling

This 7822DT cored through rock to 150 feet using industry standard NQ wireline diamond core drilling tools.

Direct Image® Subsurface Logging

Direct Image® Subsurface Logging

These machines have been used extensively for MIP, HPT, and EC logging projects.

Monitoring Well Installation

Monitoring Well Installation

Prepacked screen monitoring wells can be installed through driven 2.25-, 3.25-, 3.5-, or 3.75-in. casing.

Gasfield Exploration

Gasfield Exploration

Sampling at a new oil and gas development site.


Geotechnical Investigations

Geotechnical Investigations

Geotechnical information is collected for a new mining site.

Mineral Exploration

Mineral Exploration

Core samples were taken of permafrost during this site investigation.

Oil Field Investigations

Oil Field Investigations

A 7800 is used to install monitoring wells in an oil field.

Rock Coring

Rock Coring

Coring through rock with the 7822DT and a 3.5 in. DTH Air Hammer.


Sediment Sampling

Sediment Sampling

Macro-Core® sediment sampling in the riverbed during the investigation of a coal tar problem.

Soil Sampling

Soil Sampling

A 7822DT collects cored borings from 190 ft. in a remote area of a national forest.

Standard Penetration Testing (SPT)

Standard Penetration Testing (SPT)

78 Series machines can be equipped with an automatic drop hammer (optional) for performing SPT testing for geotechnical investigations.

Storage Tank Investigations

Storage Tank Investigations

Collecting soil and groundwater samples to determine the extent of contamination from a leaking underground fuel line with a 7822DT.


7822DT Features

The 7822DT is loaded with features and capabilities that enhance subsurface sampling ... from direct push to hollow stem augering, from air and mud rotary to concrete and rock coring. Real success is found when the most efficient, cost-effective solution (the right rig and tooling) is incorporated to finish the task at hand (successfully completing a project and making money for your company). More than ever, Geoprobe® equipment is the best solution with the most options. You’ll find the 7822DT to be more powerful to complete rotational drilling projects, designed to work with larger diameter tooling, and equipped with more options allowing you to offer more services to your clients. And with the Geoprobe® customer service team, you can always count on fast and knowledgeable support when you need it.

7822DT Dimensions

7822DT Dimensions 1Unfolded, Helper’s Side: length and height
7822DT Dimensions 2Folded, Operator’s Side: length and height
7822DT Dimensions 3Folded, Front: width and height

Features, Options & Accessories

Some of those features Geoprobe® operators are sure to notice quickly include:

  • 7822DT Control PanelA totally redesigned Control Panel.
    More options.  More controls.  More feedback for the operator.  Just a nice layout. 
  • Rear Stabilizer Blade.
    7822DT Rear Stabilizer BladeUsed to stabilize the machine as well as transport the optional Drop Rack System.
  • Oscillation.
    Provides easy vertical positioning of the foot on unlevel terrain which, according to Victor, “is especially great for augering when you’re aligning the auger joints.  The operator has complete control over alignment.”
  • Auxiliary hydraulic power ports.
    Three quick coupling hydraulic power ports allow for the use of multiple field accessories including Moyno® pumps, hydraulic liner extruders, pressure washer modules, and many more.  What makes two of these auxiliary outlets even more useful is that they are proportionally controlled by the operator from the control panel, and the two have a flow capacity of up to 25 gpm.
  • Safety and Serviceability.
    Finally, but arguably the most important aspects of the new Geoprobe® Model 7822DT machine revolves around two big words: Safety and Serviceability.  Safety first.  This machine was designed and built CE compliant allowing machine owners to utilize the 7822DT on sites around the world regulated by the strictest safety protocol.  As for serviceability, building durable and field supportable machines has been a trademark of Geoprobe® for over 20 years.  During the design phase of the 7822DT project, the Geoprobe® engineering design team spent significant effort to streamline the service aspects users would encounter in hopes of eliminating or reducing a service interval whenever possible.  Along these lines, one of the most exciting service related improvements to the 7822DT is the GH64 Modular Percussion Power Cell Technology.  This feature allows for fast removal of the percussion hammer section of the optional GH64 hammer ... in less than 15 minutes!  Combined with the fact that this Modular Percussion Power Cell is small and compact, it can now be sent via standard overnight carriers for easy service and fast, efficient turn around ... with no special fees.

So, think about it.  All of these features ... and more ... in the same Geoprobe® small, compact package.  “This machine is just so improved,” Victor added. “You can see the quality of this machine just by looking at it.”

  • 7822DT vs 7822LC Low Clearance Option
      -  Max. Height: 187 in. (4,750 mm)
      - 78 in. stroke

    Low Clearance:
      - Max. Height: 118 in. (3,010 mm)
      - 66 in. stroke
  • GA4100 Augerhead Augerhead
    Four Speed GA4100 (213945)
    Two Speed GA4000  (213944)

  • Automatic Drop Hammer Automatic Drop Hammer
    DH103 (213897)

  • 7 in. Single Clamp Breakout (212785) 
    Quick connect hydraulics for quick installation and removal of the clamp.
  • Hydraulic Liner Extruder
    For 5 ft. Rods (205501)
    For 4 ft. Rods (204258)

  • Moyno® 2L4 Positive Displacement Pump (205501)

  • Moyno Host KitMoyno® Hose Kit
    Helper Side Mount (217726)
    Operator Side Mount (217729)
  • 78 Series Mast & Winch Overhead Mast & Hydraulic Winch (215620)
    New configuration provides users better control and faster line speed.

  • winch extension tub3 ft. Winch Extension Tube (213364)

  • Rotating Overhead Mast and WinchRotating Overhead Mast & Hydraulic Winch (215728)

  • Side-Mount Rod Rack (209257)

  • Drop Rack System (207659)
    Easily and efficiently move tooling and supplies commonly used in the field. 

  • Drop Rack System Drop Rack System (207443)

  • Drop Rack with 50 gal. Pressure Washer System (213990)

  • 25 gal. Water Transport System (209445)
    Mounts on 207659 Drop Rack or on truck flatbed.

  • Rear Blade ForksRear Blade Forks (213203)

  • Safety CageRotational Safety Cage
    No Drop Hammer (213002)
    With Drop Hammer (212896)

  • Machine Vise Machine Vise (213932)

  • Accessory Mounting Brackets Accessory Mounting Brackets
    a. Stabilizer Blade (211664)
    b. Side Rail (211734)
  • Control Panel Screen Display Screen Heater Kit (207870)

  • Head Feed Pressure Control Module (216137) Head Feed Pressure Control Module (216137)

  • High Speed Water Swivel High-Speed Water Swivel with Floating Sub (216398)

  • Field Service Kit (214224)
    Hydraulic caps & plugs, electrical terminals,  and much more, geared to keep your machine in the field.

  • GH60 Series Nitrogen Charge Kit (202681)



7822DT Unit Platform
Stroke 78 in. 1,982 mm
Weight (approximate) 8,000 lb 3,632 kg
Width 64 in. 1,626 mm
Length (folded) 133 in. 3,378 mm
Height, w/standard mast (folded) 100 in. 2,540 mm
Height, w/rotating mast (folded) 86 in. 2,184 mm
Height, w/dual mast (folded) 100 in. 2,540 mm
Height, no mast (folded) 79 in. 2,007 mm
Height, w/mast (unfolded) 187 in. 4,750 mm
Height, no mast (unfolded) 118.5 in. 3,010 mm
Foot Travel 20.5 in. 521 mm
Extension 15.5 in. 394 mm
Lateral Movement (side-to-side) ± 7° from centerline
Oscillation ± 13° from vertical
Rear Stabilizer Lift 2,000 lb 907kg
Rear Blade Width 60 in. 1,524 mm
Ground Speed 0 - 5 mph 0 - 8 kph
Surface Load 4.6 lb/in.² 0.32 kg/cm²
Track Width 12 in. 305 mm
Percussion Hammer
Hammer System GH63
Percussion Rate 32 Hz
Forward Torque 517 ft-lb 701 N•M
Reverse Torque 637 ft-lb 864 N•M
Rotation Speed 0 - 234 rpm
Power Cell Weight 90 lb 41 kg
Hydraulic Systems
Down Force 36,000 lb 150 kN
Retraction Force 48,000 lb 214 kN
Hydraulic Pressure (system) 4,000 psi 275 bar
Hydraulic Flow Rate (system) 40 gpm 151 Lpm
Engine (diesel) Kubota, 4-cylinder turbo, Tier 4i
Engine Power (rated) 58 hp 42 Kw
Fuel Capacity (diesel) 17 gal 64 L
GA4100 Augerhead, 4-Speed
High Torque 4,000 ft-lb 5,423 N•M
Low Torque 400 ft-lb 542 N•M
High Speed Rotation 0 - 750 rpm
Low Speed Rotation 0 - 75 rpm
Hex Adapter 1 - 5/8 in. 41 mm
GH4000 Augerhead, 2-Speed
High Torque 4,000 ft-lb 5,423 N•M
Low Torque 2,000 ft-lb 2,7111 N•M
High Speed Rotation 0 -150 rpm
Low Speed Rotation 0 -90 rpm
Hex Adapter 1 - 5/8 in. 41 mm
Hydraulic Winch
Primary Winch
Winch Rating 2,500 lbf 10.5 KN
Winch Speed 0 - 125 fpm 0 - 38 m/min
Cable Length 75 ft 23 m
Secondary Winch
Winch Rating 1,100 lbf 4.4 KN
Winch Speed 0 - 220 fpm 0 - 55 m/min
Cable Length 250 ft 46 m
7 in. Single Clamp Breakout
Clamp Opening 7 in. 178 mm
Clamp Range 1.25 - 6 in. 31.75 - 152 mm
Clamp Force 0 - 17,500 lbf 0 - 78 kN
Breakout Torque 6,000 ft-lbf 8,135 N•M
Weight 350 lb 159 kg

*Unit specifications are subject to change without notice.




Overview & Features

Tools & Equipment



7822DT Training Essentials: Introduction
Type: Training Essentials

7822DT Training Essentials: Daily Check
Type: Training Essentials

7822DT Training Essentials: Safety
Type: Training Essentials

7822DT Training Essentials: Auger Pulling
Type: Training Essentials

Hammer Charge Procedure
Type: Maintenance Minutes

7822DT Removing & Installing Rubber Tracks
Type: Maintenance Minutes

7822DT Purging Air from the Hydraulic Pump
Type: Maintenance Minutes

7822DT Tethered Remote Overview
Type: Maintenance Minutes

3230DT Track Drive Tuning
Type: Maintenance Minutes

7822DT Priority 2 Cooling
Type: Maintenance Minutes

7822DT Wireless Remote Overview
Type: Maintenance Minutes

7822DT Wireless Remote Re-Association
Type: Maintenance Minutes

Fuel Line Bleeding
Type: Maintenance Minutes

Offloading a 7822DT
Type: Training

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