STR-155

SPT & Wireline Core Test Drill Rig

Starting at
$112,675

The STR-155 is our 55hp drill rig for SPT soil testing, wireline core testing and rotary drilling. It is designed for the engineer that requires an easily maneuverable, yet powerful SPT & coring soil investigation rig.

The STR-155 allows the engineer to install augers and micropiles, in addition to wireline core sampling and rotary drilling. This rig comes complete with a mud and water pump, manual or automatic SPT hammer system, retractable mast, dual winches for wireline drilling, and a compact and incredibly powerful 4-speed gearbox drill motor with a built in heavy duty wet swivel.

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Specifications

Engine

  • 55 hp (41 kW), tier-4 compliant, turbo charged diesel engine
  • Water cooled
  • 12 V electric start
  • Emergency stop button
  • Rpm gauge
  • Oil pressure gauge

Hydraulic System

  • 45 gpm (170 lpm) max combined hydraulic flow
  • Max 3000 psi (206 bar)
  • Load sensing variable displacement axial piston pump
  • Feather touch controls
  • Oil cooler

Track System

  • Stationary track system (300 mm wide 1727 mm long - 11.8” wide 68” long)
  • NACHI 3B track motor with automatic brake system
  • Built-in grease filled tensioning arm and spring

Mast

  • Chain driven mast
  • V-Rollers
  • Tilt rotate for travel
  • Standard mast 5.5 ft (1.5 m) stroke or extended mast 10.5 ft (3.2 m) stroke

Pipe Clamp

  • Single pipe/rod bottom clamp
  • Size capability from 1.5” to 6” (Other sizes available)

Telescopic SPT Tower

  • Telescopic SPT tower
  • 19 ft (5.79 m) max height (longer travel available)
  • Dual pulley system - SPT rope pulley and wireline pulley. Tower counterbalance hydraulic locking system

Mud Pump

  • Moyno 3L6 (or equivalent) continuous flow stator / rotor style mud pump
  • Up to 225 psi (15.5 bar)
  • 25 gpm flow (94 lpm)
  • Independent hydraulic motor
  • Quick coupling
  • Mounted on drill rig frame

SPT Hammer System

  • Rotary capstan system for manual SPT hammer (SPT hammer sold separately) (Auto hammer option available)

Leveling Outriggers

  • 4 hydraulic level outriggers with independent controls

Drill Motor - Rotary Gearbox MS-400

  • Gear 1: 773 rpm at 357 ft lbs (484 Nm) torque
  • Gear 2: 387 rpm at 714 ft lbs (968 Nm) torque
  • Gear 3: 193 rpm at 1427 ft lbs (1934 Nm) torque
  • Gear 4: 97 rpm at 2855 ft lbs (3870 Nm) torque
  • Built-in heavy duty wet swivel (see below)

Heavy Duty Wet Swivel

  • Top intake
  • Three quick-change connectors (AWJ, AW, BW, BWL, NW, NWL, HW, HWL, PW, PWL) others available
  • Automatic spring floating system

Lifting Winch

  • 4,500 lbs (2,041 kg) lift capacity
  • Planetary gear
  • 10 ft/sec travel speed
  • Balance weight and locking hook
  • ¼”- ½” (6-12 mm) cable diameter

Second Winch

  • For wireline operations
  • 1,000 lbs (453 kg) lift capacity
  • 20 ft/sec travel speed

Fuel Tank

  • 10 gallon (37.8 liters) fuel tank with fuel sending sensor

Hydraulic Tank

  • 30 gallon (113 liters) hydraulic oil tank with built in site level glass

Depth Capacity

  • 250-400 feet

Options

  • Remote control for driving operations
  • Various auger drill heads available
  • Automatic drop hammer 140 lbs (63 kg)
  • Manual drop hammer 140 lbs (63 kg)
  • Dual pipe clamp with breakout
  • Direct push drill head
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