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.
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.