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Note: Due to emission requirements, this machine is no longer a standard production model. Visit our drilling rigs for current production models, including the 3100GT.

Video: Geoprobe® Model 7800

Combination Drill Rig with a Cushy Ride

Mobilize efficiently with the truck-mounted 7800. Ergonomically positioned control panel offers advanced integrated diagnostics. Overhead mast and winch, GH63 percussion hammer, GA4000 auger head, and DH103 drop hammer are powered by a Kubota 4-cylinder turbo diesel 58hp liquid cooled engine. Probe provides lateral extend and oscillation while sitting on a slide-base frame-rail system for easy fold up.

Features & Options

  • A well-organized control panel with integrated display
  • 78-inch (1,981 mm) stroke allows use of 60-inch (1,524 mm) probe rods
  • Equipped with the GH63 Percussion Power Cell Technology Hammer
  • Two-speed probe cylinder
  • Mast oscillation allows easy alignment
  • Auxiliary hydraulic ports provide power for remote equipment

With drill rig service shops in North Carolina, Pennsylvania, Florida, and Kansas, you’ll have service support nearby for your routine maintenance or more in-depth remounting and refurbishment work. Our service technicians are backed by our team of engineers to ensure solutions not bandaids to issues. And our production processes mean your combination drill rig is constructed consistently and tested thoroughly to ensure easier service support.
 

Specs

Specifications are subject to change without notice.

General Specifications  
Stroke78 in.1,982 mm
Weight (approximate)8,250 lb3,746 kg
Width96 in.2,438 mm
Length (folded)133 in.3,378 mm
Height (folded)116 in.2,946 mm
Height (unfolded)184 in.4,674 mm
Foot Travel45 in.1,143 mm
Extension16 in.406 mm
Lateral Movement (side-to-side)± 7° from centerline 
Oscillation± 13° from vertical 
Percussion Hammer  
Hammer SystemGH63 
Percussion Rate32 Hz 
Forward Torque517 ft-lb701 N•M
Reverse Torque637 ft-lb864 N•M
Rotation Speed0 - 234 rpm 
Power Cell Weight90 lb41 kg
Hydraulic Systems  
Down Force36,000 lb150 kN
Retraction Force48,000 lb214 kN
Hydraulic Pressure (system)4,000 psi275 bar
Hydraulic Flow Rate (system)40 gpm151 Lpm
BP50 Power Unit  
Engine (diesel)Kubota, 4-cylinder turbo, Tier 4i 
Engine Power (rated)58 hp42 Kw
Fuel Capacity (diesel)24 gal90 L
Cooling SystemLiquid 
Power Unit Weight1,700 lb772 kg
Power Unit Dimensions42 in. L1,067 mm L
 30 in. W762 mm W
 30 in. H762 mm H
Augerhead  
GA4100 Augerhead, 4-Speed  
High Torque4,000 ft-lb5,423 N•M
Low Torque400 ft-lb542 N•M
High Speed Rotation0 - 750 rpm 
Low Speed Rotation0 - 75 rpm 
Hex Adapter1 - 5/8 in.41 mm
GH4000 Augerhead, 2-Speed  
High Torque4,000 ft-lb5,423 N•M
Low Torque2,000 ft-lb2,7111 N•M
High Speed Rotation0 -150 rpm 
Low Speed Rotation0 -90 rpm 
Hex Adapter1 - 5/8 in.41 mm
Hydraulic Winch  
Winch Rating2,500 lb1,067 kg
Winch Speed0 - 125 fpm0 - 38 m/min
Cable Length75 ft23 m
7 in. Single Clamp Breakout  
Clamp Opening7 in.178 mm
Clamp Range1.25 - 6 in.31.75 - 152 mm
Clamp Force0 - 17,500 lbf0 - 78 kN
Breakout Torque6,000 ft-lbf8,135 N•M
Weight350 lb159 kg

Specs

Click below to view standard specifications. Specifications are subject to change without notice.

General Specifications  
Stroke78 in.1,982 mm
Weight (approximate)8,250 lb3,746 kg
Width96 in.2,438 mm
Length (folded)133 in.3,378 mm
Height (folded)116 in.2,946 mm
Height (unfolded)184 in.4,674 mm
Foot Travel45 in.1,143 mm
Extension16 in.406 mm
Lateral Movement (side-to-side)± 7° from centerline 
Oscillation± 13° from vertical 
Percussion Hammer  
Hammer SystemGH63 
Percussion Rate32 Hz 
Forward Torque517 ft-lb701 N•M
Reverse Torque637 ft-lb864 N•M
Rotation Speed0 - 234 rpm 
Power Cell Weight90 lb41 kg
Hydraulic Systems  
Down Force36,000 lb150 kN
Retraction Force48,000 lb214 kN
Hydraulic Pressure (system)4,000 psi275 bar
Hydraulic Flow Rate (system)40 gpm151 Lpm
BP50 Power Unit  
Engine (diesel)Kubota, 4-cylinder turbo, Tier 4i 
Engine Power (rated)58 hp42 Kw
Fuel Capacity (diesel)24 gal90 L
Cooling SystemLiquid 
Power Unit Weight1,700 lb772 kg
Power Unit Dimensions42 in. L1,067 mm L
 30 in. W762 mm W
 30 in. H762 mm H
Augerhead  
GA4100 Augerhead, 4-Speed  
High Torque4,000 ft-lb5,423 N•M
Low Torque400 ft-lb542 N•M
High Speed Rotation0 - 750 rpm 
Low Speed Rotation0 - 75 rpm 
Hex Adapter1 - 5/8 in.41 mm
GH4000 Augerhead, 2-Speed  
High Torque4,000 ft-lb5,423 N•M
Low Torque2,000 ft-lb2,7111 N•M
High Speed Rotation0 -150 rpm 
Low Speed Rotation0 -90 rpm 
Hex Adapter1 - 5/8 in.41 mm
Hydraulic Winch  
Winch Rating2,500 lb1,067 kg
Winch Speed0 - 125 fpm0 - 38 m/min
Cable Length75 ft23 m
7 in. Single Clamp Breakout  
Clamp Opening7 in.178 mm
Clamp Range1.25 - 6 in.31.75 - 152 mm
Clamp Force0 - 17,500 lbf0 - 78 kN
Breakout Torque6,000 ft-lbf8,135 N•M
Weight350 lb159 kg

Resources

Click on a section below to view information.

When David Reinsma, now Owner of Trinity Drilling, first attended a Geoprobe® Open House...

ID: 5322 | Date:

Geoprobe® 3.75 in. tooling was designed in conjunction with the Geoprobe® 2.0-in. Slim Prepacks to create a more efficient...

ID: 5141 | Date:

This is one of my favorite accessory tools. It’s simple and effective. This is a true impact-making, gotta-see-it-to-believe-it...

ID: 5273 | Date:

They made the decision over dinner one evening. “I think we should start our own business,” Dusty Schroeder said to his wife, Kim, with their three small children at the table...

ID: 5138 | Date:

Depend on Team Geoprobe®

Since 1987, Geoprobe® has manufactured innovative drilling rigs and tooling - engineered for efficiency and safety - simplifying drillers’ jobs and empowering their companies to succeed as productive and profitable leaders in the industry. When you partner with Geoprobe® you receive:

Customer-inspired Innovation

Engineering and building industry-leading drilling rigs, tooling, and techniques for the technical driller based on your needs to work safer and more efficiently.

Exceptional Value

Ensuring drilling rigs and tooling are created in conjunction – with consistent quality – to collect the highest-quality information with the most accurate result to get you to, into, and through the job efficiently.

Superior Service

Equipping you to do your best job and keeping you in the field via one-on-one expert sales and service technicians manning live support phone lines, shipping necessary parts same-day.