• Friction reducer with ring
  • Friction reducer with 4 cams
Gouda Geo-Equipment B.V.
Satellietbaan 8
2181 MH Hillegom
The Netherlands


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Friction Reducers for CPT Sounding Tubes

A friction reducer (OD = 36 mm) combines two purposes. It connects the piezocone, electrical CPT cone or mechanical cone to the first CPT sounding tube and it reduces the lateral friction on the string of CPT sounding tubes during cone penetration testing.

The friction reducers are available either with cams or with a ring. The ring type friction reducer is primarily used in clays and clayey soils. The cam type friction reducer is mostly used in sands. For more background reading, please consult "Cone Penetration Testing in Geotechnical Practice" by T. Lunne a.o.

Friction reducers come in various sizes and lay-outs in order to meet the industry's needs.

Product Range

Piezocone Dissipation test Water level meter CPT crawler CPT Electric cones Seismic CPT Magnetometer Gouda Jacket cone Soil sampler Dynamic penetrometer Cone Penetration Testing Piezometer CPTU Inclinometer
CPT truck Crawler-Truck Begemann cone Vane tester