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