TaeguTec CCMT120404PC TT8115 | High-Speed Steel Turning Insert
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TaeguTec CCMT120404PC TT8115
The High-Velocity Specialist: Ultimate Wear Resistance for Precision Steel Finishing
Product Overview
"Which insert grade is the best for high-speed continuous turning of steel while maintaining a perfect surface finish and extreme tool life?"
The TaeguTec CCMT120404PC TT8115 is a high-performance 80° rhombic insert designed for ISO P (Steel) finishing. Utilizing the highly wear-resistant TT8115 CVD coating, this grade is optimized for maximum cutting speeds in stable conditions. The PC (Precision Finishing) chipbreaker geometry features a sharp cutting edge and specialized rake angle to reduce cutting forces, preventing heat buildup and ensuring superior chip evacuation in light-duty finishing applications.
Key Features
Advanced CVD coating with high Al2O3 content for exceptional crater wear resistance at ultra-high surface speeds.
Optimized for low depths of cut (DOC), providing stable chip breaking and excellent surface Ra values.
Designed to withstand the intense temperatures of dry machining and high-velocity continuous cutting.
Technical Specifications
ISO Code Explanation: CCMT120404PC
80° Rhom.
7° Relief
Tolerance
Fixing
12.9mm L
4.76mm S
0.4mm Rad.
Chipbreaker
| Unit System | Designation | IC (Inscribed Circle) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CCMT120404PC | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | CCMT431PC | 0.500" | 0.016" |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Low Carbon Steel | 250 - 550 m/min | 0.05 - 0.20 mm/rev |
| Alloy Steel (Pre-hardened) | 200 - 400 m/min | 0.05 - 0.18 mm/rev |
Compatible Toolholders
This insert is designed for standard SCLCR/L 12 external toolholders and S-SCLCR/L 12 boring bars.
Product Applications
- High-speed mass production of automotive steel components.
- Precision finishing of carbon steel shafts and axles.
- Boring operations requiring extreme accuracy and surface brilliance.
- Machining of alloy steel parts where cycle time reduction is a priority.
TaeguTec Grade Performance Matrix
| Grade Name | Machining Speed | Main Strength |
|---|---|---|
| TT8115 (CVD) | Ultra High | Wear Resistance: Best for high-velocity finishing. |
| TT8125 (CVD) | Medium-High | Versatility: Best for general steel turning. |
Why Choose TaeguTec?
TaeguTec, as a key member of the IMC Group, leads the world in high-speed turning technology. The TT8115 grade represents the ultimate in CVD coating science, allowing CNC workshops to push their machines to the limit. By choosing TaeguTec, you reduce part-per-cycle time and ensure the highest levels of predictability and surface quality, significantly lowering your overall manufacturing costs.
Verified Global Feedback
"Incredible Speed"
We pushed our cutting speeds by 30% on low-carbon steel. The TT8115 doesn't even flinch. Finish is mirror-smooth.
— High-Tech Machining (USA)"Beste Standzeit"
Very consistent tool life at high speeds. The PC chipbreaker works perfectly for our finishing passes.
— Präzisionsfertigung AG (Germany)"Top Performance"
Great for high-volume automotive parts. Reduced our tool changes significantly. Very reliable.
— Automotive Precision (Japan)Frequently Asked Questions
1. Is TT8115 good for interrupted cuts?
TT8115 is a high-hardness grade. It is best suited for continuous cuts. For heavy interruptions, the TT8125 or TT8135 grades are better suited.
2. Can I use this for Stainless Steel?
This grade is optimized for ISO P Steel. For Stainless Steel (ISO M), we recommend TaeguTec’s TT9080 or TT9225 grades.
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.