- Home
- TrueDex

Deep Hole Drilling
Sunnen’s TrueDex line of Deep Hole Drilling Tools & Inserts
For over 95 years Sunnen has provided industry leading honing and lapping solutions for a wide range of industries from Aerospace to Oil & Gas. We have leveraged our expertise in precision bore sizing and finishing to expand into deep-hole drilling with our own line of deep hole drilling machinery as well as Sandvik-style tools, carbide inserts and accessories, including:
- Single Tube System (BTA) Drills, Inserts, and Consumable Spare Parts.
- Double Tube System (Ejector) Drills, Inserts, and Consumable Spare Parts.
- Tools and Cutting Oils
Sunnen’s TrueDex deep-hole drilling heads, inserts, and pads are directly interchangeable with Sandvik’s T-MAX® 424.10 series of tools, covering the diameter range between 63.50mm (2.5”) to 183.99 mm (7.24”) and 100x hole diameter. These tools offer low cost per bore and consistent performance.
There are a number of benefits you can expect with Sandvik-style tools by Sunnen:
- Multiple diameter settings
- Ease of use and process security
- Excellent surface finish & tight tolerances
- Great for achieving hole straightness in long workpieces
- Wide application range
- High penetration rate in most materials
- Complete line of drill tubes
TrueDex line is widely used in the following industries:
- Oil and Gas
- Aerospace
- Automotive
- Heavy Equipment
- Defense
- Ship Building
- Steel Processing