Water Well & Rotary Drilling, Trailer Mounted Drill Rig

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TMG Manufacturing introduces the new WW-138T, our most compact water well rig to date! Versatile and powerful, this amazing machine features a 38hp motor and can drill 150-250 feet. This rig comes standard with a 4-speed gearbox, allowing several drilling speeds. The WW-138 can be trailer, track or truck-mounted, and includes a pipe rack, retractable tower with built-in winch, and a pipe clamp.

(Pictures show the 74 hp, and three axle version.)

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  • 38 hp (28.35 kW) tier-4 compliant, turbo charged diesel engine
  • Water cooled
  • 12 V electric start
  • Emergency stop button
  • Rpm gauge
  • Oil pressure gauge

Hydraulic System

  • 22 gpm (83.3 lpm) max combined hydraulic flow
  • Max 3000 psi (206 bar)
  • Load sensing variable displacement axial piston pump
  • Oil cooler

Trailer Mounted

  • Custom-made trailer with single axle (two axle option)
  • Break lights and break system
  • Built-in rod and casing rack


  • Chain driven mast
  • V-Rollers
  • Tilt rotate for travel
  • Standard mast stoke of 10.5 ft (3 m) for drill rod of 10 feet long

Pipe Clamp

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

Telescopic Tower

  • Telescopic tower
  • 21 ft (6.4 m) max height (longer travel available)
  • Wireline pulley, tower counterbalance hydraulic locking system

Mud Pump (Optional - Not included)

  • Centrifugal pump (Other pump options available)
  • Up to 100 psi (6.89 bar)
  • 250 gpm flow (946 lpm)
  • Independent hydraulic motor
  • Quick coupling
  • Mounted on drill rig frame

Leveling Outriggers

  • 4 hydraulic level outriggers with independent controls

Drill Motor - Rotary Gearbox MS-250

  • Gear 1: 1169 rpm at 275 ft lbs (372 Nm) torque
  • Gear 2: 584 rpm at 551 ft lbs (747 Nm) torque
  • Gear 3: 292 rpm at 1101 ft lbs (1492 Nm) torque
  • Gear 4: 146 rpm at 2203 ft lbs (2986 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
  • Balance weight and locking hook
  • ¼”- ½” (6-12 mm) cable diameter

Fuel Tank

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

Hydraulic Oil Tank

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

Depth Capacity

  • 150-250 feet


  • Mud pump
  • Dual pipe clamp with breakout
  • Two axle trailer option (Also available as truck-mounted, or rubber tracks mounted)
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