Progressive rock auger, extended version, with round shank chisels and pilot bit.
Effective length - 2,500 mm
2,500 mm
Diameter - 600 - 2,000 mm
600 - 2,000 mm
No. of cutters - progressive
progressive
Pilot - Round shank chisel
Round shank chisel
Connector - Kelly box - 200 mm Spanner width
Kelly box - 200 mm Spanner width
Casing - uncased
uncased
Range of application - Medium-hard to hard rock up to 100 MPa
Medium-hard to hard rock up to 100 MPa
Equipment - Kelly box 200 x 200 mm, round shank chisels densely mounted on the progressive auger part, round shank chisel pilot bit, easily exchangeable hard metal wear plates and hardfacing as wear protection
Kelly box 200 x 200 mm, round shank chisels densely mounted on the progressive auger part, round shank chisel pilot bit, easily exchangeable hard metal wear plates and hardfacing as wear protection