Large ID Ring Bit Systems
Tri-Mach’s Large ID Ring Bit System is designed for use with sacrificial casings in situations where drilling needs to continue beyond the casing depth. This makes the Large ID system an ideal choice for energy and water well drilling, where operations proceed through the installed ring bit using a smaller rock bit. In piling applications, the system also enables the drilling of full-size rock sockets through the ring bit with large-diameter rock bits, ensuring efficient continuation and maximum borehole diameter after the casing is set.
Product Features:
- Large Inner Diameter (ID): Allows for the installation of structural elements or grout injection. For example, strand anchors or bar anchors.
- Robust Construction: Manufactured from high-strength steel to withstand harsh drilling conditions.
- Drill-Through Option: Enables continuous drilling without tool removal. Speeds up production significantly.
- Compatibility: Designed to work with standard and optional stock shanks for flexibility.
Large ID Ringset Specifications
Our Large ID Ringset come in multiple sizes to accommodate different drilling requirements:
LARGE ID RING BITS
Product code | Casing OD (mm) | Ring bit OD (mm) | Ring bit ID (mm) | Weight (kg) | Drill through option | Maximum casing thickness (mm) |
---|---|---|---|---|---|---|
RT-AN114-5 | 114.3 | 137 | 91 | 4.3 | Yes | 5.0 |
RT-AN139-5.5 | 139.7 | 161 | 117 | 5.0 | Yes | 5.5 |
RT-AN168-6 | 168.3 | 192 | 142 | 7.0 | Yes | 6.0 |
RT-AN193-6 | 193.7 | 222 | 168 | 10.2 | Yes | 6.0 |
RT-AN219-6.3 | 219.1 | 246 | 192 | 12.0 | Yes | 6.3 |
RT-AN273-6,3 | 273.0 | 305 | 243 | 16.1 | Yes | 6.3 |
LARGE ID PILOT BITS
Product code | Casing OD (mm) | Pilot bit OD (mm) | Weight (kg) | Drill through option | Standard stock shank | Optional shanks on order | Maximum casing thickness (mm) |
---|---|---|---|---|---|---|---|
PT-AN114-5-DHD3.5 | 114.3 | 102 | 8.5 | Yes | DHD3.5 | – | 5.0 |
PT-AN139-5.5-DHD340 | 139.7 | 127 | 35.0 | Yes | DHD340 | TD40 | 5.5 |
PT-AN168-6-DHD350 | 168.3 | 155 | 70.0 | Yes | DHD350 | QL50 | 6.0 |
PT-AN193-6-DHD360 | 193.7 | 180 | 40.8 | Yes | DHD360 | QL60 | 6.0 |
PT-AN219-6-DHD360 | 219.1 | 202 | 49.6 | Yes | DHD360 | QL60 | 6.0 |
PT-AN273-6,3-DHD380 | 273.0 | 256 | 89.3 | Yes | DHD380 | SD8 | 6.3 |
Key Features & Benefits
- Precision Drilling – Ensures accurate borehole diameter and straight casing installation.
- High-Quality Materials – Made from premium alloy steel for extended durability.
- Optimized Cutting Structure – Features tungsten carbide buttons for enhanced wear resistance and drilling speed.
- Compatibility – Works with various DTH hammers and drilling rigs.
- Versatile Applications – Suitable for foundation drilling, infrastucture, geotechnical exploration, mining, and well drilling.
Why Choose Our Large ID Ringsets?
Our DTH Ringsets are engineered for maximum performance in demanding drilling conditions. With innovative design, long-lasting wear resistance, and seamless compatibility, these tools provide a cost-effective and reliable solution for casing drilling operations.
- Superior Quality and Durability: Our DTH Ringsets are made from premium materials, ensuring they can withstand the toughest drilling conditions and offer longer service life.
- Advanced Design: Leveraging cutting-edge technology and innovative design, our DTH Ringsets provide superior penetration rates, making them ideal for DTH piling and other demanding drilling applications.
- Customized Solutions: We understand that every drilling project has unique requirements. That’s why we offer customized DTH Ringset solutions tailored to your specific needs, ensuring maximum efficiency and performance.
- Expertise and Support: Our seasoned team brings deep industry experience, offering unmatched client support and guidance. Alongside our top-tier DTH Ringsets and ring bit systems, we provide essential maintenance services that can extend your tools’ lifespan by up to 20-30%. This not only ensures optimal performance but also maximizes your investment’s value by reducing the need for replacements.
Tri-Mach provides the best tools for the job
Whether you are involved in construction, mining, or any other industry that requires reliable and efficient drilling through hard rock, our DTH drill bits, DTH casing advancement systems, casing drilling systems and ring bit systems are designed to deliver. Our commitment to quality, innovation, and customer satisfaction makes us the go-to choice for professionals seeking the best DTH piling and drilling solutions.
Explore our range of DTH drill bits and discover how our cutting-edge drilling solutions can enhance your operational efficiency and project outcomes. You can trust us to provide the tools you need to tackle the toughest drilling challenges with confidence.
Do you have any further questions? Please feel free to contact Matias!

Matias Niemeläinen
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