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7800
Direct Push & Rotary Rig

Easy Mobilization, Cushy Ride Home in a Powerful Truck Option

Move from site to site quickly with our truck mounted Geoprobe® Model 7800! It has a newly designed more ergonomically positioned control panel with an advanced integrated diagnostics system. It features an overhead mast and winch, our GH63 Percussion Hammer ( with an optional upgrade to the GH64 ), our GA4000 Auger Head, and ASTM Standard Automatic Drop Hammer System DH103. It is powered by a Kubota 4-Cylinder Turbo Diesel 58hp liquid cooled engine. The probe unit provides lateral extend and oscillatory movements and sits on a slide base frame rail system for easy fold-up.

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> View Specs

7800
Direct Push & Rotary Rig

Easy Mobilization, Cushy Ride Home in a Powerful Truck Option

❯ Contact Us

Features & Options

- A well-organized control panel with integrated display
- 78 inch (1,981 mm) stroke allows use of 60 in. (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

Videos

Overview

Geoprobe® Model 7800

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ID: 11477

Features & Options

78 Series Winch Options

ID: 16667

Tooling & Sampling

Geoprobe® 3.75-inch Tooling System

ID: 16818

Accessories

Geoprobe® Exclusive Quick Change Hook

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ID: 16667

Geoprobe® Hydraulic Liner Extruder

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ID: 10688

Geoprobe® 2.25 in. Spring Assisted Swivel Pull Cap

ID: 16849

Maintenance

Hammer Charge Procedure

ID: 18919

Specifications

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.

Trinity Drilling is Growing & Building

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Percussion hammer power translates into tool advancement rates. Here’s one example ... during informal testing in our backyard, our 7822DT could drive a 3.75-in. rod string to approximately 30 feet in 21 minutes. The 3230DT advanced the 3.75-in. rods to 30 feet in well under 6 minutes. Both had a solid drive point on the lead end.

Customers Find Success with Geoprobe® 3.75 in. Tooling

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Spring Assisted Swivel Pull Cap

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7800 Specs

Literature Type: E-Specs
Download File: 7800_Spec_Options.pdf

Machine Service for 78 Series Machines (7822DT, 7800)

Literature Type: Service Documents Technical Documents
Download File: 78_series_machines_2013_0.pdf

Geoprobe^® Machines

We engineer and manufacturer machines for environmental, geotechnical, exploration, CPT, geothermal, and water well applications. Below you will find more information on all of our rigs. Click on them for more information.

Rotary Sonic ❯ 8250LS Rotary Sonic Drill Rig The Geoprobe® 8250LS is a full-size rotary sonic rig capable of running 20-ft. tooling. The GV5 sonic head provides 50,000 lbs. of dynamic force for increased efficiency in the field. Geotechnical, Environmental, Exploration and Geothermal	Rotary Sonic ❯ 8150LS Rotary Sonic Drill Rig The Geoprobe® 8150LS is a full-size rotary sonic rig with high performance. It is capable of running 10 ft. tooling and the GV5 sonic head provides 50,000 lbs. of dynamic force. Geotechnical, Environmental, Exploration and Geothermal	Direct Push & Rotary ❯ 3230DT Environmental & Geotechnical Drill Rig The Geoprobe® 3230DT is ideal for geotechnical and environmental applications. The high-speed drill head easily turns augers, while the automatic drop hammer is equipped for SPT work. Geotechnical, Environmental, Exploration and CPT	Direct Push & Rotary ❯ 7822DT Environmental & Geotechnical Drill Rig The Geoprobe® 7822DT is a high-capacity direct push machine with a narrow platform. Applications include soil sampling, rock coring, groundwater monitoring, geotechnical and more. Geotechnical, Environmental, Exploration and CPT	Direct Push & Rotary ❯ 6712DT Direct Push Machine Modular drilling rig perfect for small- to medium-sized direct push projects. It breaks into three components if necessary for easy transport to remote sites. Geotechnical, Environmental, Exploration and CPT	Geotechnical ❯ 3100GT Geotechnical Drill Rig The Geoprobe® 3100GT Geotechnical Rig is designed to quickly perform SPT borings (augers & mud rotary), collect shelby tube samples, take rock cores, and push CPT cone. Geotechnical, Environmental and CPT	Geotechnical ❯ 150GT Geotechnical Drill Rig Specifically designed for customers focused on traditional geotechnical drilling applications utilizing: hollow stem auger, solid stem auger, SPT, mud rotary, air rotary, and high speed coring. Geotechnical and Environmental
CPT ❯ 20CPT Press Cone Penetration Testing This flexible mast option with a 20-ton capacity is specifically designed for performing CPT. It’s versatile too, with a quick mount design that allows the CPT mast to be attached to multiple platforms (skid steer, 6712DT). Geotechnical and CPT	CPT ❯ 2060CPT Cone Penetration Testing The Geoprobe® 2060CPT is a 20 ton cabin crawler used for Cone Penetration Testing (CPT). It includes many user-friendly controls to make jobs in the field quick, efficient, and comfortable. Geotechnical and CPT	Limited Access ❯ 5410 Direct Push Machine 54-in. stroke and 28,900 lb. of pulling capacity for subsurface work. Lateral movement of the unit provides for offset placement of the probe without moving the carrier vehicle. Environmental	Limited Access ❯ 54LT Direct Push Machine Rugged, compact probing unit designed for tight spaces and rough terrain. This unit is narrow enough to fit through standard 36-in. doors to get to confined, enclosed places. Environmental	Limited Access ❯ 540MT Direct Push Machine Ready for confined spaces and low ceilings with reliable Geoprobe® power. When folded, the unit is less than 29 inches (737 mm) high. Environmental	Limited Access ❯ 420M Direct Push Machine At 23 in. wide, 62 in. tall (folded), and weighing less than 425 lb., the 420M can be manually lifted and carried to remote sampling locations. Environmental	Water Well ❯ DM250 Water Well Rig The DRILLMAX® DM250 Water Well Rig is the only rig mounted on a truck under CDL requirements that can handle 20-ft. drill pipe. The perfect rig for 2-in. -6-in. shallow water wells. Geothermal and Water Well