Description
Available Sizes
We offer Tricone Rock Roller Drill Bits in a range of sizes to suit various HDD drill rigs and applications.
| Bit Size | Connection | Suitable Drill Rigs |
|---|---|---|
| 5½” | 2⅞” API Reg Pin | Ditch Witch® JT3020AT & JT30AT |
| 6½” | 3½” API Reg Pin | Vermeer® D36x50DR & Ditch Witch® JT4020AT |
| 8½” | 4½” API Reg Pin | Larger HDD drill rigs and heavy-duty applications |
Need a different size? Contact our team for availability.
Heavy-Duty TCI Drill Bits for Horizontal Directional Drilling
When drilling through hard and abrasive ground, choosing the right drill bit can make all the difference. No Dig Equipment supplies high-quality Tricone Rock Roller Drill Bits designed for Horizontal Directional Drilling (HDD), water well drilling and civil construction applications.
Manufactured with Tungsten Carbide Inserts (TCI) and sealed bearings, our tricone drill bits are built to deliver reliable performance, excellent durability and long service life in demanding drilling conditions. Suitable for medium hard formations, they provide efficient rock penetration while helping to reduce downtime and maximise productivity.
Why Choose Our Tricone Rock Roller Drill Bits?
Our TCI tricone drill bits are engineered to perform in Australia’s toughest drilling conditions.
Features & Benefits
✔ Tungsten Carbide Inserts (TCI)
✔ Medium Hard Formation – IADC 537
✔ Sealed Bearing Design
✔ Excellent Wear Resistance
✔ High Penetration Rates
✔ Long Service Life
✔ Suitable for HDD & Water Well Drilling
✔ Available in Multiple Sizes
Suitable For
Our Tricone Rock Roller Drill Bits are ideal for drilling through:
- Pindan
- Sandstone
- Limestone
- Hard Shale
- Abrasive Formations
- Medium Hard Rock
- Mixed Ground Conditions
Applications include:
- Horizontal Directional Drilling (HDD)
- Water Well Drilling
- Civil Construction
- Utility Installations
- Pipeline Projects
- Mining Support Projects
Built for HDD Contractors
Our Tricone Rock Roller Drill Bits are trusted by HDD contractors throughout Australia for drilling through difficult rock formations. Whether you’re installing water, gas, electrical or telecommunications infrastructure, these bits provide the durability and cutting performance needed for reliable pilot drilling.
With sealed bearings and premium tungsten carbide inserts, they’re designed to withstand demanding job site conditions while maintaining consistent drilling efficiency.
Why Buy from No Dig Equipment?
For more than 25 years, No Dig Equipment has supplied quality HDD tooling and trenchless equipment to contractors across Australia. Our experienced team understands the challenges of rock drilling and can help you select the right tooling for your ground conditions and drill rig.
When you choose No Dig Equipment, you benefit from:
- Expert HDD advice
- Quality rock drilling tools
- Australia-wide delivery
- Reliable customer support
- Extensive range of trenchless equipment
Frequently Asked Questions
What are Tricone Rock Roller Drill Bits used for? >
What does IADC 537 mean? >
IADC 537 is a medium hard formation bit featuring Tungsten Carbide Inserts (TCI). It is commonly used for drilling through formations such as sandstone, limestone, shale and other abrasive ground conditions.
Are these drill bits suitable for HDD? >
Yes. Our Tricone Rock Roller Drill Bits are specifically suited to Horizontal Directional Drilling and are compatible with a range of HDD drill rigs, depending on the bit size and connection.
Need Help Choosing the Right Drill Bit?
Not sure which Tricone Rock Roller Drill Bit is right for your project? Our experienced team can recommend the best size and configuration based on your drill rig, ground conditions and application.
Contact No Dig Equipment today for expert advice and a competitive quote.




