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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 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    
Stroke 78 in. 1,982 mm
Weight (approximate) 8,250 lb 3,746 kg
Width 96 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 Travel 45 in. 1,143 mm
Extension 16 in. 406 mm
Lateral Movement (side-to-side) ± 7° from centerline  
Oscillation ± 13° from vertical  
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
BP50 Power Unit    
Engine (diesel) Kubota, 4-cylinder turbo, Tier 4i  
Engine Power (rated) 58 hp 42 Kw
Fuel Capacity (diesel) 24 gal 90 L
Cooling System Liquid  
Power Unit Weight 1,700 lb 772 kg
Power Unit Dimensions 42 in. L 1,067 mm L
  30 in. W 762 mm W
  30 in. H 762 mm H
Augerhead    
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    
Winch Rating 2,500 lb 1,067 kg
Winch Speed 0 - 125 fpm 0 - 38 m/min
Cable Length 75 ft 23 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

Specs

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

General Specifications    
Stroke 78 in. 1,982 mm
Weight (approximate) 8,250 lb 3,746 kg
Width 96 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 Travel 45 in. 1,143 mm
Extension 16 in. 406 mm
Lateral Movement (side-to-side) ± 7° from centerline  
Oscillation ± 13° from vertical  
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
BP50 Power Unit    
Engine (diesel) Kubota, 4-cylinder turbo, Tier 4i  
Engine Power (rated) 58 hp 42 Kw
Fuel Capacity (diesel) 24 gal 90 L
Cooling System Liquid  
Power Unit Weight 1,700 lb 772 kg
Power Unit Dimensions 42 in. L 1,067 mm L
  30 in. W 762 mm W
  30 in. H 762 mm H
Augerhead    
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    
Winch Rating 2,500 lb 1,067 kg
Winch Speed 0 - 125 fpm 0 - 38 m/min
Cable Length 75 ft 23 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

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.