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8140LC Rotary Sonic Rig


Powerful Mid-Size Rotary Sonic

in a

Low Clearance Option

Full rotary capabilities combined with our patent-pending GV4 sonic head.



Low Clearance Rotary Sonic Rig


The Geoprobe® model 8140LC is a Low Clearance Roto-Sonic Drill Rig. It boasts of full rotary capabilities combined with our patented GV4 sonic head (a Geoprobe Systems® exclusive).

The people behind the machine will bring you unmatched service and support. The 8140LS was proudly designed and built right here in Salina KS, USA.

Give us a call to learn more!

Why Geoprobe® Sonic?

New Sonic Machines...New Sonic Tools...New Sonic Success!

  • Comprehensive Sonic Training
  • Full-size and Mid-size Rigs
  • Sonic Service Support
  • Continous Sonic Product Development
  • Sonic Tooling In Stock
  • Exclusive Sonic Dual Tube Tubing

Features, Options & Accessories

Geoprobe® GV4 Sonic Head

  • Designed, Manufactured & Supported by Geoprobe Systems®
  • Full Rotational Drilling Capabilities
  • Modular Head designed to simplify maintenance & repair
  • Head Tip Out 25 degrees
  • Oscillator Frequency 0-130 Hz
  • Patented Under US Patent No. 8,342,263

Swing-Arm Control Panel w/ Advanced  Diagnostics System

  • Variable Location Control Panel per operator preference & Safety
  • Digital Display Screen w/ multi-function output
  • Electric over Hydraulic System
  • Advanced Warning display screens for operator & equipment safety
  • Variable Speed controls for drilling operations

Proven 40 Chassis Design

  • Integrated Frame Rail System for optional features
  • Rear Stabilizer blade and drop rack tooling systems
  • Easy Engine Access for general maintenance & repair
  • Maneuvered w/ wireless or tethered remote systems
  • Two Auxiliary Hydraulic ports support optional accessories
  • Front Outriggers have 26” of travel (12” below tracks)
  • Rear Outriggers have 28” of travel (12” below tracks)

Optional Features:

  • 3L6 Moyno Pump
  • Side Storage Box
  • FMC Triplex Pump
  • SPX40 Hose Pump
  • Rod Handling Arm
  • Secondary Winch System
  • Pressure Washer and Hose Reel
  • Optional Interlocking Rotation Guard
  • Optional DH104 Auto Drop Hammer

Breakout System

  • Easily Unlocks Tool Joints
  • Holds Casing sizes 2 in. - 12 in.
  • Articulating Rod Holder

Geoprobe® Sonic Tooling

  • 4x6 Sonic Tooling
  • 6x8 Sonic Tooling
  • 8x10 Sonic Tooling
  • SDT45 Sonic Sampling
  • SDT60 Sonic Sampling


  Standard Metric
Weight (standard machine)
19,350 lb. 8 777 kg
Width 80 in. 2 032 mm
Length (folded) 186 in. 4 724 mm
Length (unfolded) 193 in. 4 902 mm
Height (folded) 110 in. 2 794 mm
Height (Folded for transport) 110 in 2 794 mm
Height (unfolded - minimum standard working height) 192 in. 4 877 mm
Height (unfolded - w/Rigid Break Out Option 168 in. 4 267 mm
Height (unfolded - winch mast up) 249 in. 6 325 mm
Extension (fore and aft) 15 in. 381 mm
Lateral Swing ±8 degrees
Oscillation ±10 degrees
Fuel Capacity (diesel) 40 gal 151 L
Engine (diesel) CAT® 4-cylinder turbocharged  
Engine Power (continuous) 120 hp 90 kW
Surface Load Pressure (standard machine) 7.5 psi 52 kPa
Hydraulic Oil Reservoir 55 gal  208 L
Hydraulic Flow (max) 100 gpm 376 Lpm
Hydraulic System Pressure (max) 4,000 psi 276 bar
Auxiliary Hydraulic Outlets Flow 0 - 12 gpm 0 - 45 Lpm
Auxiliary Hydraulic Outlet Pressure 3,000 psi 207 bar
Winch Pull Back 2,500 lb 1 134 kg
Winch Line Speed 0 - 140 fpm 0 - 43 mpm
Winch Mast Stroke 63 in. 1 600 mm
Ground Speed  2.5 mph 4 kph
Front Outriggers (travel below drill mast) 16 in  406.4 mm
Single Rear Stabilizer Blade (travel below tracks) 12 in  304.8 mm
Additional Wireline Winch
  Standard Metric
Converts primary winch system to wireline
(enough cable to run a wireline 375 ft bgs.)
140fpm 42.67mpm
Second Winch Set Up 2,000 lbf 2 976.33 kgm
Line Speed 110fpm 33.53 mpm
GV4 Sonic Head
  Standard Metric
Vertical Travel (GV4 Sonic Head) 92 in.  2 337 mm
Side Shift Travel (GV4 Sonic Head) 26 in. 660 mm
Head Tip Out 25 degrees  
Oscillator Freq 0-130 Hz
Down Force 20,000 lbs  
Retraction Force 20,000 lbs  
Torque (high torque/low speed) 4,000 ft-lbs  
Torque (low torque/high speed) 2,500 ft-lbs  
Rotation speed (low speed/high torque) 80 rpm
Rotation speed (high speed/low torque) 120 rpm
Break Out System: (12” w/ Rigid Mount**)
  Standard Metric
Vertical Travel 9 in. 228.6 mm
Clamp Force (adjustable) 0-21,000 lbs
Breakout Torque 13,500 ft-lbs
Casing Size Compatible
2 in. - 12 in.
50.8 mm - 304.8 mm

**Rigid mount option (for low clearance setup)

*Unit specifications are subject to change without notice.




Overview & Features


High-Speed Coring Head for Sonic
Type: Features, Sonic


Indexing Rack for 10-foot Sonic Tooling
Type: Features, Sonic


Geoprobe® Model 8140LC
Type: Overview, Sonic


81 Series (Sonic) Rod Handling System
Type: Features, Sonic


Geoprobe® Exclusive Quick Change Hook
Type: Features, Sonic

Tools & Equipment


Sonic Center Rod Guide
Type: Tooling, Sonic


Geoprobe® Sonic Double Wall 4.5 in. (SDW45)
Type: Tooling, Sampling, Sonic



No training videos are available for this machine. For a full list of available videos, click here.

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