Digga North America General Purpose Auger 18in x 5′ Heavy Conditions

Description

Feel the steady downward bite of the Digga A8-18-13-MFT Auger into fractured shale. This 18-inch diameter heavy-duty bit mounts to skid steer powerheads for caissons and commercial pole installations. Multi-facet tungsten teeth fracture caliche and rocky hardpan ahead of the flighting. You will stall the auxiliary circuit if you feed too aggressively into solid granite.

Machined from heavy-wall seamless mechanical steel tubing, the main tube withstands severe torsional shock from high-output planetary drives. Heavy 5/16-inch continuous steel flighting resists edge gouging in abrasive stone and gravel. Built for hydraulic planetary gearboxes producing up to 3,500 foot-pounds of torque, the bare tool weighs 174 lbs net. Dimensions measure 18 inches in diameter by 60 inches in length, finished in industrial yellow enamel.

Key Features of Digga A8-18-13-MFT

Utility crews buy Digga A8-18-13-MFT attachments for pole barn construction and sound barrier post settings in rocky terrain. Competitive commercial auger pricing delivers rugged tungsten carbide teeth and reinforced flighting that prevent jobsite delays in tough ground.

• Eighteen-inch cutting width forms clean pier holes for utility poles and deck foundations
• Five-foot flight length reaches below deep frost lines without separate extension rods
• Multi-facet tungsten carbide teeth crush solid hardpan, caliche, and fractured shale
• Continuous steel flighting carries broken stone fragments upward out of the hole
• Tungsten carbide pilot point cuts straight center marks on sloping rock shelves
• Two-inch hex drive hub collar fits standard skid steer planetary output shafts
• Reinforced root welds support tooth holders against violent subsurface boulder strikes
• Balanced spiral pitch clears spoil without packing dirt along the center shaft

Torque Load Runout Realities

Bench rotation checks on a 25-GPM skid steer show center tube runout below 0.016 inches total indicator reading over five feet. Radial deflection holds under 0.038 inches at the outer tooth path under 2,800 foot-pounds of torque. Boring through rocky hardpan drops rotation speed from 60 RPM to 38 RPM, with hydraulic pressure holding near 2,350 PSI. If the teeth strike an embedded boulder, line pressure spikes to 3,000 PSI, requiring the operator to pulse the boom to prevent stalling.

Field Usability Service Demands

Two workers can transport this 174-pound unit or hoist it using a machine sling. The hex collar slides onto gearbox shafts without sticking when greased. Changing tungsten teeth takes under five minutes with a steel punch and hand hammer. Do not use this heavy-condition auger for pure sand or mud where broad earth teeth drill faster.

• Grease the drive connection hub before mounting onto the gearbox shaft
• Examine tungsten tooth points each day for impact cracks after rock drilling
• Clear aggregate dust from tooth pockets before installing fresh replacement teeth

Factory Warranty Manifest Details

Digga protects this tool with a standard 1-Year manufacturer warranty covering structural tube defects and factory welds. The factory shipping pallet holds the 18-inch auger body, tungsten teeth with pins, a rock pilot bit, and an operation manual. Powerheads and frame hitches require separate purchase.