Eijkelkamp Soil & Water

- Model Cobra TT - Percussion Drilling Set for Heterogeneous Soils



The Eijkelkamp percussion drilling set for heterogeneous soils with gasoline powered percussion hammer (Cobra TT), is standard equipped for drilling to a depth up to 5 meter. The complete set contains: a gasoline driven percussion hammer with accessories and wooden transport box, various extension rods, coupling sleeves, percussion gouges (combination type for various types of soil) in various diameters and lengths, a core sampler for PVC sample tubes and foil liners, a mechanical rod puller, an universal casing and rod puller clamp, a rod puller extension for the extraction of the first gouge, a crow bar, accessories to empty and clean the gouge, a lifting jack with lever and chain, an utility probe for safe cable finding, stairs for use with the percussion hammer in the field, etc., and aluminium transport cases.

  • Ideal for soil with bricks, large or many stones
  • The solution for city centres / industrial sites
  • Beautiful clean samples, no lubricants used
  • Extremely sturdy rods and gouges
  • Diameters allow efficient, rapid and light work
  • Can be combined with liner or foil sampling


  • Does not replace diamond core cutting
  • Not for fibrous material like (thick) roots
  • Porosity needed, not for dry glacial loams
  • Contact SonicSampDrill for larger depths


The percusssion drilling sets of Eijkelkamp Soil & Water are equipped with RD32-connection extension rods and percussion gouges are screwed together using a coupling sleeve. The RD32-connection is used in firmer, dryer soils. The RD32-connection takes very little time to attach and take off. The RD32-rods connect together by means of a coupling sleeve, which means that the massive extension rods have the same diameter along the entire length, which makes them very strong.

  • Soil profile description and classification
  • Soil sampling above groundwater table
  • Soil sampling below groundwater table
  • Environmental soil research
  • Undisturbed sampling


Drilling diameter
max 10 cm

Maximum sample depth
8 m

Power supply

Product material
iron, other material

Sample diameter
40 - 100 mm

Sample length
50 - 100 - 200 cm

Sample specification

Sample stored in
foil, tube

Sampler position

Package size
223 x 80 x 80 cm

375 kg

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