TaeguTec CNMG190616RT TT8020 | Heavy Roughing PVD Turning Insert
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TaeguTec CNMG190616RT TT8020
The Ultimate Toughness Grade: Large-Format PVD Solution for Interrupted Roughing
Product Overview
"Which heavy-duty insert is most capable of handling severe interrupted cuts in Stainless Steel or Titanium without the cutting edge chipping?"
The TaeguTec CNMG190616RT TT8020 is a high-performance turning insert engineered for the toughest ISO M (Stainless Steel) and ISO S (Exotic Alloys) applications. Utilizing the ultra-tough TT8020 PVD grade, this insert features a specialized sub-micron substrate and a multi-layered coating that prevents notch wear and crack propagation. The RT (Roughing-Tough) chipbreaker is designed with a reinforced T-land and an optimized rake angle, ensuring maximum edge integrity when roughing large castings or forgings with irregular surfaces.
Key Features
A sub-micron carbide substrate paired with a high-lubricity PVD coating for superior resistance against built-up edge and thermal shock.
Specifically designed for heavy-duty roughing, providing a robust cutting edge that withstands mechanical impact and high cutting forces.
The massive corner radius provides exceptional edge toughness and allows for significantly higher feed rates on large CNC lathes.
Technical Specifications
ISO Code Decoding: CNMG190616RT
80° Rhom
0° Relief
Tolerance
Hole/Sint
19.05mm IC
6.35mm S
1.6mm RE
Roughing
| Unit System | Designation | I.C. Dimension | Thickness (S) |
|---|---|---|---|
| Metric (ISO) | CNMG190616RT | 19.05 mm | 6.35 mm |
| Imperial (ANSI) | CNMG644RT | 0.750" | 0.250" |
Recommended Cutting Parameters (Heavy Roughing)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Stainless (304/316) | 80 - 150 m/min | 0.30 - 0.70 mm/rev |
| Titanium / Inconel | 20 - 50 m/min | 0.25 - 0.50 mm/rev |
Compatible Heavy-Duty Toolholders
This massive 19.05mm IC insert requires high-rigidity external holders such as DCLNR/L 19, PCLNR/L 19, or MCLNR/L 19 series for maximum stability.
Product Applications
- Heavy roughing of large-scale stainless steel pump and valve components.
- Machining of aerospace structural parts made from high-strength exotics.
- Turning of large castings and forgings with irregular or scaled surfaces.
- Aggressive metal removal in oil & gas equipment fabrication.
TaeguTec Grade Comparison (Interruption Focus)
| Grade Name | Main Benefit | Best Use Case |
|---|---|---|
| TT8020 (PVD) | Extreme Edge Toughness | Heavy Interruptions: Scaled surfaces, low speeds. |
| TT8125 (PVD) | High Heat Resistance | High Speed: Continuous cuts in Super Alloys. |
Why Choose TaeguTec?
A flagship brand within the global IMC Group, TaeguTec is the gold standard for metallurgy and coating innovation. The TT8020 grade is specifically engineered to defeat the challenges of mechanical shock and work-hardening materials. By selecting the CNMG190616RT, you are opting for a tool that thrives where others chip. Our focus on substrate integrity and edge geometry ensures your heavy-duty CNC operations run with maximum uptime and predictable tool life.
Verified Global Feedback
"Stainless Steel Solution"
Roughing huge 316L pump housings with heavy interruptions was a tool life nightmare. The TT8020 grade with RT breaker is the only thing that holds up.
— Pump Systems Corp (USA)"Edge Strength Unmatched"
Outstanding performance on large Titanium forgings. We run deep cuts with heavy feed rates and never see edge collapse.
— Aerospace Fabrik GmbH (Germany)"Reliable Roughing"
Very predictable wear life on tough exotics. The 1.6mm radius allows us to push the machine to its limits.
— Industrial Components (Japan)Frequently Asked Questions
1. Is the TT8020 grade suitable for dry machining?
For Stainless Steel and HRSA, coolant is highly recommended to manage heat and prevent built-up edge, although TT8020's lubricity provides stability in difficult conditions.
2. How does the RT breaker handle long stringy chips?
The RT (Roughing-Tough) breaker features a specialized geometry that forces chip curling even at heavy depths of cut, preventing dangerous chip accumulation.