TaeguTec CCMT120404PC TT8125 | Universal Steel Turning Insert
Price shown is a starting point. Contact us for a precise quote based on your requirements.
TaeguTec CCMT120404PC TT8125
The Universal Steel Expert: High-Performance CVD Coating for Maximum Throughput
Product Overview
"Which insert grade offers the best heat resistance and tool life for finishing carbon and alloy steels in high-volume production?"
The TaeguTec CCMT120404PC TT8125 is a premium 80° rhombic positive insert specifically developed for ISO P (Steel) applications. Leveraging an advanced CVD (Chemical Vapor Deposition) coating, the TT8125 grade excels in high-speed continuous cutting environments where thermal management is critical. The PC (Precision Cutting) chipbreaker features a sharp rake angle and optimized geometry, making it the industry standard for light finishing to medium turning, providing exceptional chip control and reducing cutting pressure.
Key Features
A thick, multi-layer coating provides a superior thermal barrier, drastically extending tool life in high-speed steel turning.
Engineered for finishing, this geometry minimizes radial forces to prevent vibration in boring and thin-walled applications.
The combination of a tough carbide substrate and precision edge treatment ensures consistent tolerances across long production runs.
Technical Specifications
ISO Designation Breakdown: 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 | 200 - 450 m/min | 0.08 - 0.25 mm/rev |
| Alloy Steel / Die Steel | 150 - 320 m/min | 0.08 - 0.18 mm/rev |
Compatible Toolholders
This insert is optimized for standard SCLCR/L 12 external holders and S-SCLCR/L 12 boring bars.
Product Applications
- High-speed finishing of transmission shafts and engine components.
- Precision boring operations where holding tight tolerances is critical.
- Turning of alloy steel machine parts requiring high surface Ra quality.
- Continuous machining in ISO P materials where tool heat management is essential for stability.
TaeguTec Grade Comparison
| Grade | Coating Type | Primary Advantage |
|---|---|---|
| TT8125 (CVD) | Al2O3 Multi-Layer | Universal Performance: High speed & heat resistance in steel. |
| CT3000 (Cermet) | Uncoated/PVD | Surface Aesthetics: Best for mirror-like finishing results. |
Why Choose TaeguTec?
TaeguTec, a member of the IMC Group, is a world-renowned leader in metallurgical innovation. The TT8125 grade is a testament to South Korean engineering, designed to reduce cost-per-part by maximizing machine uptime and extending tool life in abrasive steel environments. By choosing TaeguTec, you invest in high-precision technology that ensures consistent quality and superior throughput in your manufacturing facility.
Verified Global Feedback
"Excellent productivity"
We run these on alloy steel shafts at 350 m/min. The tool life is far better than our previous CVD grade. Highly predictable.
— Advanced Precision (USA)"Zuverlässige Qualität"
Very stable dimensions over long runs. The PC chipbreaker works perfectly even at small depths of cut.
— Metalltechnik GmbH (Germany)"Ottimo per acciaio"
A great all-rounder for ISO P. Surface finish is consistent and tool wear is very even.
— Meccanica di Precisione (Italy)Frequently Asked Questions
1. Is TT8125 suitable for interrupted cuts?
TT8125 has high toughness, but it is optimized for continuous or light-interrupted cuts. For heavy interruptions, a dedicated PVD grade is recommended.
2. What is the benefit of the PC chipbreaker?
The PC (Precision Finishing) geometry reduces cutting pressure, which is vital for maintaining accuracy in precision finishing and internal boring.
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.