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.
Need Help With taegutec Inserts?
Looking for a taegutec equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This taegutec insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.