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Specific LRS drilling rig

The Sonic LRS (LargeRotoSonic) range of drilling rigs, are equipped with the powerful Sonic LS 50k drill head but have a more powerful motor to offer superior performance to the MRS range, allowing deeper and/or wider drilling. They are generally designed to specification, with many specific configurations possible (integrated with excavator, container, etc.).

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The Sonic LRS drills with the Sonic LS 50k drill head feature a larger chassis and a more powerful motor to deliver even greater performance than the MRS range, allowing for larger diameter and, more importantly, deeper drilling up to 300 metres (or more depending on conditions).

In addition to the usual advantages of the Sonic method, the productivity here is even higher and quite simply remarkable. Just one example, drilling in the Port of Amsterdam in 200mm diameter: 55m/hour...!

Destructive drilling is therefore even faster while retaining the main advantages of the Sonic method (extreme straightness, little injection, etc.) and avoiding the costly and noisy use of a compressor (air drilling is also possible if required). This is why these models are increasingly popular for foundation drilling, especially with the Excavator configuration, which allows for multi-angle drilling on all faces, even on an inverted slope.

In coring, samples can reach diameters of up to 7" (178mm) and even more with the special Sonic corers, which are always of the highest quality even in alluvial or mixed soils. Dry coring (without injection) can also be carried out for all types of environmental drilling and/or in polluted areas, nuclear, oil sites etc...

LRS drills can be offered on truck, excavator, crawler or on a chassis (Head+Powerpack) integrated into a specific carrier.

The LRS range of drills are available with a CAT 355 HP 6 cylinder diesel engine.


The most powerful
Large diameter and deeper drilling
Very large diameter coring, if necessary dry (without injection).


  • Foundations (micro-piles, tie rods, piles, etc.)
  • Mining survey
  • Environmental recognition
  • Water drilling and geothermal energy
  • Seismic drilling.


Sonic mast and head carriage
Control panel on articulated arm
Radio remote control (and optional for control of all drilling parameters)
Triple rod brake
Injection pumps (Triplex FMC Bean pump 160 l/min - 45 bar for drilling + high pressure pump 210 bar - 19 l/min for Aqualock and cleaning)
Integrated aluminium water tank


CAT 355 HP 6 Cylinder diesel engine.


Oscillating force: 226 kN
Frequency: 0 - 150 Hz
Torque (right / left): 712 / 950 m.kg
Static support: 8000 daN
Static traction: 12000 daN
Travel speed: 45 m/min
Useful stroke: 5200 mm.


  • ManipAll: Hydraulic handling system for rods and tubes
  • Hydraulic loading arm combined with a rod/tube rack (number defined according to Ø) with mechanical separator 
  • SPT & PDB Automatic Penetration Testing System
  • Triple rod brake with 20 ton puller system
  • Superior performance injection pump (several models available, including Duplex pump 570 l/min - 45 bar
  • Additional winches (manoeuvring and/or WL) with telescopic and hydraulically rotatable jib.



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