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Lightweight, Durable Direct Push Power

Drillers seeking a portable drill rig easily maneuvered through narrow doorways and into basements choose the 420M. Weighing less than 425 lbs and only 23-inches wide by 62-inches tall when folded, the 420M portable drill rig can be manually lifted and carried into hard-to-reach job sites. Additional advantages of the 420M portable drill rig include:

  • Powered by remote hydraulic power source or by using auxiliary hydraulics of other Geoprobe® drill rigs
  • Pin-in outrigger legs enhance stability
  • 42-inch stroke for 36-inch tooling

Owners praise the durability of the lightweight 420M portable drill rig with the flexibility to succeed in low clearance spaces.


Features & Options


Mobilize easily with 420M portable drill rig with quick connects to attach to remote power.

Mobilize easily with 420M portable drill rig with quick connects to attach to remote power.

Owners appreciate the ease of the 420M portable drill rig for accessing jobs through narrow doorways and low overhead clearance. Quick connects easily attach to the remote power unit while pin-in outrigger legs stabilize the mobile cart. Additional features and options on the 420M include:

  • 42-inch stroke accommodates 36-inch tooling
  • Mast Weight Under 450 lbs.
  • Reliable Geoprobe® GH40 Hammer 
  • Uses remote hydraulic source
  • 23-inch width fits easily through doorways
  • Pin-in outrigger legs enhance stability
  • Quick connects easily attach to remote power unit
  • Easy to transport from site-to-site or to remote locations

With drill rig service shops in 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 portable drill rig is constructed consistently and tested thoroughly to ensure easier service support.
 

Features & Options


Owners appreciate the ease of the 420M portable drill rig for accessing jobs through narrow doorways and low overhead clearance. Quick connects easily attach to the remote power unit while pin-in outrigger legs stabilize the mobile cart. Additional features and options on the 420M include:

  • 42-inch stroke accommodates 36-inch tooling
  • Mast Weight Under 450 lbs.
  • Reliable Geoprobe® GH40 Hammer 
  • Uses remote hydraulic source
  • 23-inch width fits easily through doorways
  • Pin-in outrigger legs enhance stability
  • Quick connects easily attach to remote power unit
  • Easy to transport from site-to-site or to remote locations

With drill rig service shops in 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 portable drill rig is constructed consistently and tested thoroughly to ensure easier service support.
 

“We cored about 30 inches of concrete on the riser steps to gain access to the soils below the structure. The geotechnical engineer and the University of Houston were extremely pleased that we were able to obtain the soil samples they needed in the redesign of the Hofheinz Pavilion.” 

- Paul Wolf, President, Geo Test Services, Texas

Tooling & Accessories

DT22 Soil Sampling System

Video: DT22 Soil Sampling System Overview

The Geoprobe® DT22 Soil Sampling System is a direct push system for collecting continuous core samples of unconsolidated materials from within a sealed casing of Geoprobe® 2.25- inch outside diameter probe rods. Samples are collected and retrieved within a liner that is threaded onto the leading end of a string of Geoprobe® 1.25-inch OD light-weight center rods and are inserted to the bottom of the outer casing.

SP22 Groundwater Sampler

Video: SP22-ISP Groundwater Sampler

The Screen Point 22 (SP22) Groundwater Sampler from Geoprobe Systems® was designed to keep the screen away from all percussive energy while the sampler is lowered downhole, thus extending the life of the screen. The SP22 can be used alone as a groundwater grab sampler or groundwater profiling tool, or with the DT22 Soil Sampling System. The screens can be deployed using either 1.25-inch Lightweight Center Rods or PVC riser. Designed for tough probing conditions, the screen head on the fully retrievable sampler adapts to either a stainless steel or PVC screen.

MC5 Core Sampler Soil Sampling System (LWCR)

Video: Geoprobe® Macro-Core® Center Rod

Our MC5 Soil Sampling System is a single tube, discrete or continuous system with unmatched durability. MC5 Light Weight Center Rod Soil Sampling System. The MC5 1.25-inch Center Rod System was designed for the absolute worst of the worst direct push probing conditions. “These are conditions that we normally do not recommend probing in,” according to Mike Carlin, Project Engineer, “so we developed the toughest soil sampling system in the direct push industry ... it’s a brute!” Macro-Core® is a registered trademark of Kejr, Inc., Salina, KS.

Explore Your Options

Call Us at (785) 825-1842 for an in-person demo.

Request A Quote

Call Us at (785) 825-1842 to request a rig quote.

Schedule a Visit

Call Us at (785) 825-1842 to visit headquarters.

Applications


420M cores concrete stairs to collect geotechnical soil samples beneath risers.

Geotechnical

Provide shallow geotechnical soil samples and limited access work - even completing concrete coring - with the 420M portable drill rig.

420M used to collect environmental samples sites with narrow openings and low ceilings

Environmental

Efficiently collect environmental samples despite narrow doorways and low overhead clearance using the 420M portable drill rig.

Specs

Specifications are subject to change without notice.

Stroke 42 in. 1067 mm
Weight 411 lb 187 Kg
Weight (with rod guide & outriggers) 446 lb 202 Kg
Width (transport width) 23 in. 584 mm
Width (working width with outriggers extended) 36 in 914 mm
Length (mast vertical) 28 in 711 mm
Length (mast vertical & outriggers installed) 45 in 1143 mm
Length (mast horizontal) 62 in 1575 mm
Height (mast vertical - probe cylinder extended) 94 in. 2388 mm
Height (mast vertical - probe cylinder retracted) 62 in 1575 mm
Down Force 11,700 lb 52.1 kN
Retraction Force 14,000 lb 62.3 kN
Hydraulic Pressure (system) 2,000 psi 138 bar
Hydraulic Flow Rate (system) 12 gpm 38 L/min
Hammer System GH42  
Percussion Rate 30 Hz  
Torque 345 ft. lb. 468 Nm
Rotation Rate (bi-directional) 125 rpm  
PortaCo Inc. Compact Hydraulic Power Unit Specifications    
Hydraulic Flow Rate 12 gpm 38 Lpm
Hydraulic Pressure 2000 psi 138 bar
Engine Power, electric-start 20 Hp Briggs & Stratton  
Engine Fuel Unleaded Gasoline (diesel available by request)  
Size 35 in. long x 29 in. wide x 32 in. high 889 x 737 x 813 mm
Weight 320 lb. 145 Kg

Specs

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

Stroke 42 in. 1067 mm
Weight 411 lb 187 Kg
Weight (with rod guide & outriggers) 446 lb 202 Kg
Width (transport width) 23 in. 584 mm
Width (working width with outriggers extended) 36 in 914 mm
Length (mast vertical) 28 in 711 mm
Length (mast vertical & outriggers installed) 45 in 1143 mm
Length (mast horizontal) 62 in 1575 mm
Height (mast vertical - probe cylinder extended) 94 in. 2388 mm
Height (mast vertical - probe cylinder retracted) 62 in 1575 mm
Down Force 11,700 lb 52.1 kN
Retraction Force 14,000 lb 62.3 kN
Hydraulic Pressure (system) 2,000 psi 138 bar
Hydraulic Flow Rate (system) 12 gpm 38 L/min
Hammer System GH42  
Percussion Rate 30 Hz  
Torque 345 ft. lb. 468 Nm
Rotation Rate (bi-directional) 125 rpm  
PortaCo Inc. Compact Hydraulic Power Unit Specifications    
Hydraulic Flow Rate 12 gpm 38 Lpm
Hydraulic Pressure 2000 psi 138 bar
Engine Power, electric-start 20 Hp Briggs & Stratton  
Engine Fuel Unleaded Gasoline (diesel available by request)  
Size 35 in. long x 29 in. wide x 32 in. high 889 x 737 x 813 mm
Weight 320 lb. 145 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: 2017-06-21

GeoTest Services in San Antonio, TX, completed five limited access interior borings to +/- 20 feet at the University of Houston Cougars...

ID: 5197 | Date: 2016-08-25

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.