Mobile B-59 Geotechnical Drill Rig on 1987 International S1900 - $90,000 (Canyon County ID)
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make / manufacturer:Foremost
model name / number:Mobile B59
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Ready to work with minimal setup, this well-maintained 1995 Mobile B-59 auger/rotary/core drill rig is mounted on a rugged 1987 International S1900 single-axle frame. Ideal for geotechnical, environmental, and exploration drilling, it delivers proven performance capable of auger drilling to 85 ft and core drilling to 50 ft with the included tooling. Recent servicing ensures reliability—don't miss this versatile workhorse!
Carrier Truck Highlights
• Engine: International DT466 inline-6 diesel (runs strong with no smoke or hesitation)
• Transmission: Newer 6-speed manual for smooth, efficient power delivery
• Recent Maintenance:
o Rebuilt injectors for optimal fuel efficiency
o New oil cooler to prevent overheating
o Full brake inspection (pads, drums, and lines)
• Chassis: Heavy-duty S1900 frame with single rear axle
Drill Rig Condition & Core Features
Regularly serviced and field-ready—the B-59 has seen regular use but zero major issues. All fluids and filters changed; operational testing confirms flawless performance:
• All 3 hydraulic jacks (36" stroke) extend/retract smoothly for stable setup on uneven terrain
• Rotating table glides effortlessly; mast raises/lowers without binding or leaks
• Hydraulic pipe clamp, breakout wrench, and autohammer included for efficient rod handling
• Deck Engine: Cummins 4BT 3.9L turbo diesel (approx. 7,500 hours – runs like new)
• Deck Transmission: Clark 3-speed powershift
• Rotary Drive: 2-speed right-angle gearbox; max torque 13,500 ft-lbs; speeds up to 403 rpm (low-high range)
• Moyno Mud Pump: Fully operational progressive cavity pump for reliable circulation
• Water System: 250-gallon tank integrated with tool storage box on deck
• Operator Platform: Elevated driller's station with controls and safety railings
Winches & Hoisting (Pullmaster-Style)
• Main Hoist: 8,500 lbs capacity (primary pullback)
• Auxiliary Hoist: 4,000 lbs (utility lifting)
• Safety Drive Hoist: For secure core retrieval
• Cathead Hoist: 5,000 lbs (auger assist)
• Wireline Hoist: Dedicated for overshot operations
• Lines & Rigging: Two winch lines brand new (steel cable); third inspected and excellent; fresh thimbles installed on all
Drilling Tools & Accessories (All Included – No Shortages!)
Extensive inventory for immediate productivity—valued at thousands separately:
• Augers: 90 ft of 4¼" ID octagonal hollow stem auger flighting; stored in 2 swing-out under-bed racks
• Drill Rods: 100 ft of NWJ-size casing/rod
• Auger Heads & Bits: 5 auger drive heads; 6 pilot bits; multiple spare auger teeth
• Samplers: 2 × 18" split-spoon; 2 × 24" split-spoon; 2 × 36" split-spoon sampler with drive shoes and baskets
• Core Drilling Kit: 2 complete core barrel assemblies (including 2 core barrels, reamers, core bits, and overshot assembly)
• Rod Handling: In-out and sideways slide base with rod clamp; breakout wrench
• Extras: Full set of wrenches, spare parts bin, and under-body rod rack
Additional Rig Specs
• Mast: 20 ft stroke; hydraulic leveling
• Head Travel: 10 ft vertical
• Power Take-Off: Integrated for all hydraulics
• Safety Features: E-stop, guards
• Dimensions (Rig Only): Approx. 108" wide × 324" long; 33,000 lbs total unit weight
• Fuel Capacity: Dual tanks (truck + deck) for extended field ops
This B-59 is a steal for contractors needing a compact, high-torque rig that punches above its weight. Low hours on the deck engine, battle-tested components, and a comprehensive tool package mean you're buying production time