STR-137G

SPT & Wireline Core Test Drill Rig

Our smallest gasoline SPT and wireline rotary core test drill rig, the STR-137G is a compact and very powerful rig designed to get into tight places while maintaining all the features needed with an SPT test rig.

The STR-137G includes a manual or automatic SPT hammer system, retractable mast, dual winches for wireline drilling, and a single or dual pipe clamp with breakout.

This model features a compact and incredibly powerful 4 speed gearbox drill motor with a built-in heavy duty wet swivel and chain driven mast with V-Rollers.

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Specifications

Engine

  • 37 hp (27.6 kW) compliant, gasoline engine
  • Air cooled
  • 12 V electric start
  • Emergency stop button
  • Rpm gauge
  • Oil pressure gauge

Hydraulic System

  • 18 gpm (68 lpm) max combined hydraulic flow
  • Max 3000 psi (206 bar)
  • 2-stage gear pump
  • Feather touch controls
  • Oil cooler

Track System

  • Stationary track system (260 mm wide 1676 mm long - 10.2” wide 66” long)
  • NACHI 2B 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 (1.67 m) stroke, with 12,000 lbs pull down force

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

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-200

  • Gear 1: 627 rpm at 220 ft lbs (298 Nm) torque
  • Gear 2: 313 rpm at 440 ft lbs (596 Nm) torque
  • Gear 3: 157 rpm at 881 ft lbs (1194 Nm) torque
  • Gear 4: 78 rpm at 1761 ft lbs (2387 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

  • 2,500 lbs (1,133 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

  • 20 gallon (75 liters) hydraulic oil tank with built in site level glass

Depth Capacity

  • 100-200 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
  • Mud pump
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