TaeguTec DNMG150408-PC TT8115 | High-Speed Steel Turning Insert
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TaeguTec DNMG150408-PC TT8115
High-Velocity Alumina CVD Grade for Elite Steel Finishing Efficiency
Product Overview
"Which carbide insert grade is best for reducing cycle times in high-speed steel finishing while maintaining a consistent Ra finish?"
The TaeguTec DNMG150408-PC TT8115 is a high-productivity solution designed for ISO P (Steel) machining. The TT8115 grade utilizes a specialized thick-layer CVD Alumina (Al2O3) coating that acts as a thermal barrier, allowing for ultra-high cutting speeds without premature crater wear. The PC (Positive Finishing) chipbreaker is engineered for sharp cutting action, effectively lowering power consumption and preventing workpiece smearing. With a robust 0.8mm radius, this insert provides the mechanical strength required for medium finishing while delivering the precision expected from a dedicated finishing tool.
Key Features
Advanced CVD coating provides superior heat resistance for continuous high-velocity finishing passes.
A positive, sharp rake angle minimizes cutting pressure and ensures elite surface integrity.
Offers increased edge strength over 0.4mm versions while maintaining excellent finish quality.
Technical Specifications
ISO Code Decoding: DNMG150408-PC
55° Rhom
0° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.8mm RE
Pos. Finish
| Unit System | Designation | Thickness (S) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | DNMG150408-PC | 4.76 mm | 0.8 mm |
| Imperial (ANSI) | DNMG432-PC | 0.187" | 0.031" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (ISO P) | 200 - 450 m/min | 0.15 - 0.35 mm/rev |
| Alloy Steel (ISO P) | 180 - 400 m/min | 0.10 - 0.30 mm/rev |
Compatible Toolholders
This DNMG 1504 series insert fits all standard external and internal toolholders such as DDJNR/L 15 or PDJNR/L 15.
Product Applications
- High-velocity finishing of transmission shafts and large gear components.
- Precision CNC finishing of carbon and low-alloy steel workpieces.
- Applications requiring high surface speeds to achieve mirror-like finishes.
- Mass production environments where cycle time reduction is critical.
TaeguTec Grade Benchmarking
| Grade Name | Type | Primary Focus |
|---|---|---|
| TT8115 | CVD Al2O3 | High Velocity: Maximum throughput in continuous steel cuts. |
| TT8125 | CVD TiCN+Al2O3 | Universal: Superior balance of toughness and wear resistance. |
Why Choose TaeguTec?
TaeguTec is a global innovator in advanced carbide technology, providing high-performance solutions for the most demanding CNC environments. The DNMG 150408-PC TT8115 is a flagship product designed for shops that prioritize productivity and precision. With world-class coating technology and precision-ground geometries, TaeguTec inserts deliver predictable tool life and elite surface finishes, reducing your cost-per-part and boosting your machine throughput. Trust the industrial-grade performance of TaeguTec for your high-speed steel turning operations.
Verified Global Feedback
"Productivity Booster"
Switched to TT8115 and were able to increase our speed by 20%. The PC chipbreaker is perfect for finishing steel.
— Precision Machining LLC (USA)"Top Oberflächengüte"
Fantastic surface Ra even at high feed rates. The Alumina coating really handles the heat well.
— CNC-Fertigung Wagner (Germany)"Grande Affidabilità"
Reliable and sharp. We get consistent results every time. Best insert for finishing our alloy steel shafts.
— Meccanica di Precisione (Italy)"Sharp and Fast"
PC geometry is very sharp, reducing noise and heat. Excellent tool for high-speed precision lathes.
— Advanced Tooling Corp (Japan)Frequently Asked Questions
1. Is TT8115 suitable for heavy interrupted cuts?
No. TT8115 is a high-speed grade optimized for continuous cuts. For interruptions, we recommend TT8125 or TT8135.
2. What is the benefit of the PC chipbreaker over standard types?
The PC (Positive Finishing) geometry is sharper, which reduces cutting forces and friction, leading to cooler cuts and superior surface Ra.
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.