1200mm drilling progessive auger match bauer-bg 36 rig for bored pile foundation work

1200mm rotary drilling progessive auger match bauer-bg25 rig for bored pile foundation

1500mm double cut progessive auger match bauer-bg26 rig for bored pile foundation work

Bored pile Progressive Auger

rotary drilling Progressive Auger

Main Applications

– Moderately strong to strong rock (50 – 100 MPa)

–  is recommended in uncased bores or for

larger diameters

Features

– Kelly box 200 mm

– Pilot bit RP4 with round shank chisels

– Progressive cutting edge with round shank chisels

– Wear protection: hard facing or wear strips

Materis ：q355b

Kelly box:casted kelly box

progressive augers  are heavy-duty rotary drilling tools engineered to penetrate moderately strong to strong rock. Their "progressive" design utilizes a stepped cutting edge that gradually fragments hard materials, maximizing drilling efficiency in challenging ground conditions.

esign & Features

Progressive Cutting Edge: A stepped flight profile lined with round shank chisels allows the tool to cut into rock in distinct stages rather than all at once.

Pilot Bit: Typically equipped with a heavy-duty pilot bit (such as the RP4) to precisely center the auger and guide initial penetration.

Wear Protection: The flights are heavily reinforced with hard facing and wear strips to prolong the tool's lifespan in highly abrasive environments.

Double-Cut Options: Models  feature a double-cut design, which provides better balance and is highly recommended for larger drilling diameters or when operating in uncased bores.

Rig Connection: They connect to the Kelly bar of rotary drilling rigs using standard couplings, commonly a 200 mm Kellybox.

Primary Applications

Hard Rock Excavation: Specifically rated for breaking through moderately strong to strong rock formations, typically handling compressive strengths between 50 and 100 MPa.

Deep Foundation Piling: Used extensively in Kelly drilling operations to create large-diameter bored piles for structural foundations.

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