Special drilling tools for Kelly drilling

Casing


Range of application


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Boulder extractor cased

Diameter 520 - 1,840 mm
Casing inside diameter 540 - 1,910 mm
Pilot Round shank chisel
Range of application For lifting and removing boulders.

Boulder extractor uncased

Diameter 600 - 2,000 mm
Bored pile diameter 100 - 2,000 mm
Pilot Round shank chisel
Range of application For lifting and removing boulders.

Type CB-CC cased Cross cutter

Diameter 520 - 1,840 mm
Casing inside diameter 540 - 1,910 mm
Pilot Round shank chisel
Range of application Fracture existing building elements, break out drill cores, drill rock < 100 MPa, penetrate boulders.

Type CB-CC uncased Cross cutter

Diameter 600 - 2,000 mm
Bored pile diameter 600 - 2,000 mm
Pilot Round shank chisel
Range of application Fracture existing building elements, break out drill cores, drill rock < 100 MPa, penetrate boulders.

Belling buckets

Range of application Enlargement of the borehole above the bottom of the borehole
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