TaeguTec DNMG150404PC TT8115 | High-Speed Steel Finishing Insert
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TaeguTec DNMG150404PC TT8115
High-Velocity Alumina Technology for Maximum Steel Productivity
Product Overview
"Which insert grade is most effective for ultra-high-speed finishing passes in carbon steel to achieve mirror-like finishes?"
The TaeguTec DNMG150404PC TT8115 is the flagship solution for high-productivity turning in ISO P (Steel). Utilizing a thick CVD Alumina (Al2O3) coating, the TT8115 grade is built to withstand extreme temperatures, making it the perfect choice for high-speed continuous cutting. The PC (Positive Finishing) chipbreaker is designed with a sharp cutting edge and specialized geometry that reduces cutting forces and minimizes vibration. With a precision 0.4mm corner radius, this insert ensures exceptional dimensional accuracy and a superior surface Ra, even when operating at the upper limits of CNC machine spindle speeds.
Key Features
Thick Alumina coating provides incredible wear resistance during high-speed continuous turning.
Positive cutting action designed for fine finishing, providing a clean cut and preventing workpiece smearing.
The 0.4mm radius is optimized for tight tolerances and elite surface finishes on precision shafts and gears.
Technical Specifications
ISO Code Decoding: DNMG150404PC
55° Rhom
0° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.4mm RE
Positive Finish
| Unit System | Designation | Thickness (S) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | DNMG150404PC | 4.76 mm | 0.4 mm |
| Imperial (ANSI) | DNMG431PC | 0.187" | 0.016" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Low Carbon Steel | 200 - 500 m/min | 0.05 - 0.25 mm/rev |
| Alloy Steel (HB225) | 180 - 420 m/min | 0.05 - 0.20 mm/rev |
Compatible Toolholders
This DNMG 1504 series insert is compatible with standard external and internal toolholders such as DDJNR/L 15 and PDJNR/L 15.
Product Applications
- High-speed finishing of automotive shafts and structural components.
- Mirror-finish turning of carbon and alloyed steel workpieces.
- Precision CNC finishing requiring tight Ra values.
- Mass production lines where tool throughput is the primary KPI.
TaeguTec Grade Comparison
| Grade Name | Type | Best Use Case |
|---|---|---|
| TT8115 | CVD Al2O3 | High Speed: Maximum throughput in continuous passes. |
| TT8125 | CVD TiCN+Al2O3 | Universal: Balance of stability and toughness. |
Why Choose TaeguTec?
TaeguTec is a global pioneer in metalworking, providing high-performance solutions that drive industrial growth. The DNMG 150404PC TT8115 is a testament to TaeguTec’s commitment to high-speed productivity. Its advanced alumina coating technology allows you to push your CNC machines further, reducing cycle times and increasing workshop capacity. When you choose TaeguTec, you are choosing a partner dedicated to precision, durability, and a lower cost-per-part in high-volume manufacturing environments. Experience the power of Korean precision engineering in every cut.
Verified Global Feedback
"Fast and Precise"
We pushed our Vc to 450m/min and the TT8115 held up beautifully. The surface finish on carbon steel is like a mirror.
— Precision Components LLC (USA)"Exzellente Standzeit"
The alumina coating is incredible for high-speed finishing. Much longer life compared to our previous supplier.
— Schmidt CNC-Technik (Germany)"Finitura Fantastica"
The PC chipbreaker works perfectly at low feed rates. No nesting, just clean chips and great Ra.
— Meccanica di Precisione (Italy)"High Throughput"
Perfect for our automated production line. Very predictable wear pattern makes it easy to schedule tool changes.
— Nippon Machining (Japan)Frequently Asked Questions
1. Is the TT8115 grade suitable for interrupted cuts?
TT8115 is optimized for continuous high-speed passes. For interrupted cuts, we recommend the TT8125 or TT8135 for better impact resistance.
2. What is the main advantage of the PC chipbreaker?
The PC (Positive Finishing) chipbreaker is designed for sharp, clean cuts at low depths of cut, providing excellent chip breaking and preventing built-up edge.
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.