Micropile drilling system
D 244.5 – 508 (9-5/8” – 20”)

with double head unit (rotary / rotary)

Small diameter piles are designed for different applications. They transfer their loads over skin friction to the load-bearing subsoil / stratum. For their realisation, even small drilling rigs can be used in confined conditions.

In many cases, double-head drilling rigs are chosen.

When drilling in mixed soils with rock deposits, often a DTH Hammer together with augers as internal drill string are utilised for the better discharge of the drilled cuttings. If the soil conditions permit it, an internal drill string consisting only of auger drill rods and a rotary drill bit may be used.

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Product information sheet

DIAMETERS OF
244.5 TO 508
(9-5/8” TO 20”)

COMPLETE FLEXIBIITY

Each of our drilling systems are custom-made – 100 % adapted to the project needs and the ground conditions encountered at the construction site.

All drill bits are available in a plethora of designs and borehole diameters, project and / or customer specific

MICROPILE DRILLING SYSTEM D 244.5 mm – 508 mm (9-5/8” – 20”)
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MICROPILE DRILLING SYSTEM D 244.5 mm – 508 mm (9-5/8” – 20”)
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  1. Flange to suit the rear rotary head unit
  2. Balancing rod with length adapted to machine and double head
  3. Ejection bell to suit front rotary head unit equipped with splash protection
  4. Drive flange to suit outer casings
  5. Drehbohrrohr (AuRotary casing (outer drill string) – in lengths of 500 mm (approx. 1-5/8’) to 6000 mm (approx. 20’)ßenverrohrung) – in Längen von 500 mm bis 6000 mm
  6. Adaptor-sub (thread-saver) to balancing rod and inner drill string / drill rods or auger drill rods
  7. Auger drill rods (inner drill string) to match outer drill string – in lengths of 500 mm (approx. 1-5/8’) to 6000 mm (approx. 20’)
  8. Adaptor-sub (thread-saver, starter casing, grout injection pipe)
  9. DTH shock absorber
  10. DTH hammer
  11. Auger drill bit
  12. DTH percussion bit
  13. Casing Bit

The thread profiles are available in right-hand (RHT) and left-hand (LHT), as well as conical and cylindrical versions. All supplied casings are realised through various manufacturing methods and are application specific.