Rotary Drilling Tools

The Bauer rotary drilling tool system includes all essential components for the construction of pile bores in a wide variety of soils. It is specially designed for the BG system. Key characteristic features are long service life and easy maintenance.

Augers

SB augers are suitable for loosening water-bearing cohesive and non-cohesive soils, whilst SBF augers or progressive augers are suitable for breaking and ripping medium-hard rock.

The augers are available in a wide variety of configurations:

  • With flat teeth or round shank chisels
  • Wear protection on auger flight
  • Single or double start type
  • With or without pilot bit
  • With or without collar ring
  • Diameter range 520 mm – 2500 mm

Drilling buckets

KB drilling buckets are suitable for drilling in water-bearing cohesive and non-cohesive soils, whilst KBF augers are designed for breaking and ripping dense soils up to medium-hard rock. For emptying the bucket, the hinged revolving bottom gate can be opened automatically.  A vent tube prevents the creation of a vacuum as the bucket is withdrawn from the borehole.

The drilling buckets are available in a wide variety of configurations:

  • With flat teeth or round shank chisels
  • Single or double start type
  • Different pilot bits
  • With or without collar ring
  • Diameter range 520 mm – 2500 mm

Core barrels

KR core barrels are deployed primarily when encountering boulders, layers of gravel and cobbles, or for coring through rock shelves.

The cutting ring of the core barrel can be equipped with different bits:

 

  • Tungsten carbide pins or weld-on teeth
  • AS weld-on blocks
  • Round shank chisels
  • In special cases also with roller bits
  • Diameter range 520 mm – 2500 mm

Belling bucket

In stable soil formations, the bearing capacity of bored piles can be increased significantly by enlarging the base area of each pile. Belling buckets with retractable cutter arms are used for this purpose.

The toothed cutter arms are extended outwards by the application with the Kelly bar of a vertical crowd force to the scissor mechanism inside the belling bucket.