Cutter Heads and Disk Cutters
Herrenknecht AVN 1200 Head
Kolk offers a variety of cutters to suit various soil conditions:
Roller cutters
Drill heads for microtunneling and drain construction
Horizontal under cutters for hard rock
Mixed face and soft ground cutter heads
Replacement cutters
Saddles and complete drill heads for all types of T.B.M.s
Diameters of cutters range from 12" to 17" (305 to 432 mm)