450mm DR4 Dedicated Rock Auger - Digga

The Heavy-Duty Solution for Solid Rock Drilling

The Digga DR (Dedicated Rock) Auger is a premium drilling solution engineered for operators facing the most challenging sub-surface conditions. It features a specialised cutting head equipped with heavy-duty tungsten rotating rock picks, providing the concentrated ripping power required to penetrate solid rock, including bluestone and basalt, plus sandstone, mudstone, shale, tuff, and concrete. While standard or combo augers are designed for mixed ground, the DR range is built specifically to excel where others stall, utilising reinforced flighting and a high-grade steel centre tube for maximum structural integrity.

This model is the workhorse of the dedicated rock range, designed to deliver high penetration rates in non-fracturable materials. It features heavy-duty 8mm thick flights and a reinforced centre shaft to ensure longevity in the most punishing Australian environments. The dedicated rock design ensures that maximum downward pressure is transferred directly to the tungsten carbide tips, allowing you to grind through hard layers with precision. With Digga’s "True Cut" engineering, you are guaranteed a precise 450mm hole diameter for consistent, professional results in the toughest terrain.

Key Product Features

• Australian Made: Designed and manufactured locally to withstand the extreme demands of drilling into solid Australian rock and concrete.

• Rotating Rock Pick Pilot: Features a heavy-duty pilot specifically designed to lead the auger into hard surfaces, ensuring stability and preventing wandering.

• Rotating Rock Pick Teeth: Equipped with high-grade tungsten carbide rotating rock picks that provide a continuous grinding action for solid rock.

• Versatile Drive Hubs: Available in 65mm Round, 50.8mm Hex, and 57mm Square drive sizes to suit your specific drive unit.

• True Cut Technology: Ensures a perfect 450mm hole diameter throughout the entire depth of the bore.

• Heavy-Duty Construction: Built with a reinforced centre shaft and thick steel flights to handle the extreme torque required for rock drilling.

• Compatible with Auger Torque S4 Drives: DR4 65mm Round Drive Augers will fit Auger Torque S4 Drives.

Frequently Asked Questions

When should I choose the DR4 over the RC4 series? You should choose the DR4 when you are drilling into solid, non-fracturable rock, heavy concrete, or blue metal for extended periods. While the RC4 is a great all-rounder for shale and broken rock, the DR4 is a dedicated tool specifically for solid, high-resistance materials.

What kind of machine do I need to run a DR4? The DR4 is compatible with mini excavators, skid steers, and mini loaders. However, for 450mm rock drilling, ensure your machine has sufficient down-pressure and torque to allow the rock teeth to effectively grind the material.

Which drive hub do I need for my machine? This depends on your specific drive unit. We offer the DR4 range in 65mm Round, 50.8mm Hex, and 57mm Square hubs. Always check the output shaft of your drive motor before ordering to ensure a perfect fit.

Are the rock teeth replaceable? Yes. The tungsten rock teeth are designed to be easily replaced once worn. Keeping fresh teeth on your auger is essential for maintaining high penetration rates and protecting the auger body.

Suitable for all 65mm round drive, 50.8mm Hex Drive & 57mm Square Drive

• Teeth and Pilot: Rotating Tungsten Rock Teeth

• Diameter: 450mm

• Length: 1200mm

• Drive Hub: 65mm

• Part #: DR4-18-2

Also available in:

• 50.8mm Hex Drive Part #: DR4-18-3

• 57mm Square Drive Part #: DR4-18-4

Choose from the DRIVE HUB TYPE drop down menu options.

PROUDLY PRODUCED AND MANUFACTURED IN AUSTRALIA Please note that 50.8mm Hex and 57mm Square drive augers may be made to order. Build times may occur.