Compaction Grouting & Rotary Drill Rig

Our CGR-138 is a mini drill rig designed for the compaction grouting contractor. It features a 38hp tier 4 compliant, turbo diesel engine with a 22 gpm hydraulic power unit.

This soil compaction drilling rig comes with a 4 speed gearbox drill head with incorporated heavy duty wet swivel.

The CGR-138 is designed to be extremely mobile for tight spaces and it has been known to drill 800+ feet of casing per working day.

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  • 38 hp (28.35 kW), Kohler tier 4 compliant, turbo charged diesel engine
  • Water cooled
  • 1.563 liter displacement (1560 cc)
  • Radiator cooling system
  • 12 V electric start
  • 3000 rpm
  • Direct injection
  • Emergency stop button
  • Rpm gauge
  • Oil pressure gauge
  • Oil level light

Hydraulic System

  • Hawe hydraulics power unit
  • 22 gpm (83 lpm) max combined hydraulic flow
  • Max 3000 psi (206 bar)
  • Load sensing variable displacement axial piston pump
  • Feather touch controls
  • Oil cooler
  • In-tank oil filter

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


  • Chain driven mast
  • V-Rollers
  • Tilt for travel
  • Standard mast 5 ft (1.5 m) stroke

Pipe Clamp

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

Mud Pump

  • Moyno 3L6 (or equivalent) continuous flow stator / rotor style mud pump
  • Up to 225 psi (15.5 bar)
  • 50 gpm flow (189 lpm)
  • Independent hydraulic motor
  • Quick coupling
  • Mounted on drill rig frame

Leveling Outriggers

  • 4 hydraulic level outriggers with independent controls

Drill Motor - Rotary Gearbox ML-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: 146 rpm at 2203 ft lbs (2986 Nm) torque
  • Gear 4: 73 rpm at 4405 ft lbs (5972 Nm) torque
  • Built in heavy duty wet swivel (see bellow)

Heavy Duty Wet Swivel

  • Top intake
  • 18,000 lbs (8,160 kg) load capacity
  • Quick change connectors (AWJ, AW, BW, BWL, NW, NWL, HW, HWL, PW, PWL) others available
  • Automatic spring floating system

Fuel Tank

  • 6 gallon (22.7 liters) fuel tank with fuel sending sensor

Hydraulic Oil Tank

  • 10 gallon (37.8 liters) hydraulic oil tank with built-in site level glass

Depth Capacity

  • 150-250 feet of depth


  • Full function remote control for all drilling and driving operations
  • Dual pipe breakout clamp
  • Two stage mast for lower clearance drilling
  • Two-stage mast
  • Side tilt for angle drilling
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