Single-start rock auger, extended version, with round shank chisels, calibrating cutter and pilot bit, recommended for drilling diameters up to approx. 1500 mm in extended version.
No. of cutters - single-start
single-start
Pilot - Round shank chisel
Round shank chisel
Casing - uncased
uncased
Range of application - Very densely consolidated non-cohesive soils and low strength rock up to approx. 50 Mpa. and platy rock.
Very densely consolidated non-cohesive soils and low strength rock up to approx. 50 Mpa. and platy rock.
Equipment - Kelly box 200 x 200 mm, cutter bar with round shank chisels and calibration chisels, round shank chisel pilot bit, easily exchangeable hard metal wear plates and hardfacing as wear protection
Kelly box 200 x 200 mm, cutter bar with round shank chisels and calibration chisels, round shank chisel pilot bit, easily exchangeable hard metal wear plates and hardfacing as wear protection