Ringbohrkrone von oben Grafik outlines Zipp Industries


Bohrschnecke Zipp Industries


Drilling system for loose or sandy soils, as well as for slightly rocky soils, silt and clay soils

About the auger drilling process

In special civil engineering, the auger drilling process is in practice a predominantly clockwise system. The connections are based on 6-kt or 8-kt. -Connections and threaded connections with or without mechanical locking. The auger drills are connected to each other using pins, heavy-duty pins, U-pins and auger connections. A distinction is made between hollow auger drills (with internal passage) and solid drill auger (without internal passage).

Working method & scope of application

This drilling process in special civil engineering is used almost exclusively for loose/sandy soils, as well as for light rocky soils, silt and clay soils. The type of auger is selected based on whether the soil is cohesive or non-cohesive. With known geology, measurement points can be created, among other things, by drilling with a hollow auger drill.

sandy soil

Because of its loose structure, sandy soil is well suited for auger drilling. The snail can easily move through the sand and drill a tunnel or pit.

Loose soil types

This includes soils such as gravel, silt, or loamy sand. These soil types often offer little resistance to the auger drill and enable efficient advancement.

Light rock

In some cases, the auger drilling process can also be used in light rock. As long as the rock is not too hard or too compact, the auger drill can go through it.


Silt consists of a mixture of clay and sand particles and may in some cases be suitable for the auger drilling process, particularly if it is not too dense.

Help with this
We you

  • Design of the auger drill (conveying/displacing)
  • Auger processing
  • Replacing or repairing auger drills
  • Selecting the drill bit
  • Coating of drill bits
  • Optimizing the drilling process
  • Delivery of all spare parts

Soil Condition

Cohesive soils

With this soil condition, the hole “stands” after the auger drill has been pulled and does not collapse, so that screws with a closed base pipe and with 6-kt./8-kt. connectors are used.

In cohesive soils, also known as clayey soils, the auger drilling process in specialized civil engineering may be less suitable, particularly if the clay is too firm or too compact. Cohesive soils have a high degree of cohesion, which means that the clay particles are strongly bonded together and have little water permeability. Here you can possibly speak of a dry drilling process. Or even from using a auger drill.

Non-cohesive soils

If the soil is not cohesive, the hole may collapse after the drill string has been pulled. Auger drills with threaded, hexagonal or 8-sided connectors are used, which have a central hollow tube with internal and external threads. It is also possible to rinse through this hollow tube.

Wet drilling processes or hollow drilling augers can also be used with hexagonal or 8-point connectors.

You need help with the topic auger drilling?

Spare parts delivered worldwide with our courier service within a very short time!