TaeguTec DNMG150408MC TT8115 | High-Speed Steel Turning Insert
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TaeguTec DNMG150408MC TT8115
Engineered for Velocity: The Professional Standard for High-Speed Steel Finishing
Product Overview
"Which insert is best for high-speed continuous turning in carbon and alloy steels where heat resistance is critical?"
The TaeguTec DNMG150408MC TT8115 is a premium solution for ISO P (Steel) machining. The TT8115 grade features a specialized CVD coating with a thick Al2O3 layer, providing unparalleled resistance to crater wear and thermal deformation during high-velocity operations. Complementing this is the MC (Medium Chipbreaker) geometry, which balances a reinforced edge with a medium rake angle. This configuration ensures excellent chip breaking and evacuation during medium-to-fine turning, significantly reducing machine downtime and enhancing the surface integrity of high-precision components.
Key Features
Thick CVD Alumina coating allows for extreme cutting speeds while maintaining edge sharpness.
Medium chipbreaker design ensures smooth chip evacuation for both finishing and light-medium turning.
Enhanced substrate toughness combined with wear-resistant coating leads to lower cost-per-part.
Technical Specifications
ISO Code Decoding: DNMG150408MC
55° Rhom
0° Relief
Tolerance
Hole/Sint
12.7mm IC
4.76mm S
0.8mm RE
Medium
| Unit System | Designation | Thickness (S) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | DNMG150408MC | 4.76 mm | 0.8 mm |
| Imperial (ANSI) | DNMG432MC | 0.187" | 0.031" |
Recommended Cutting Parameters
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (Low/Med) | 220 - 500 m/min | 0.15 - 0.45 mm/rev |
| Alloy Steel (ISO P) | 180 - 450 m/min | 0.15 - 0.40 mm/rev |
Compatible Toolholders
This 1504 series DNMG insert fits standard 55° holders such as DDJNR/L 15, PDJNR/L 15, or SDJNR/L 15.
Product Applications
- High-speed finishing of automotive shafts and gear components.
- Medium-duty turning of carbon and alloy steel forging parts.
- Continuous high-velocity machining in dry or wet environments.
- Ideal for mass production lines requiring high throughput and stable tool life.
TaeguTec Grade Comparison
| Grade Name | Coating Type | Machining Conditions |
|---|---|---|
| TT8115 | CVD Al2O3 | High Speed: Continuous finishing for maximum speed. |
| TT8125 | CVD TiCN+Al2O3 | Universal: Balanced for varied steel types and light interruptions. |
Why Choose TaeguTec?
TaeguTec is a global leader in metalworking technology, providing cutting-edge solutions that optimize industrial efficiency. The DNMG 150408MC TT8115 is a pinnacle of their CVD coating expertise, designed specifically to thrive in high-heat, high-velocity environments. By choosing TaeguTec, you are investing in a brand trusted by major automotive and industrial manufacturers to deliver precision, durability, and a lower total cost of production. Upgrade your CNC performance with the speed and reliability of Korean engineering.
Verified Global Feedback
"Increíble Velocidad"
We switched to TT8115 for our finishing line. The surface speed we can achieve now is nearly 30% higher than before without losing tool life.
— Garcia Machining Solutions (Mexico)"Top Precision"
MC chipbreaker handles the chips perfectly on our 4140 steel shafts. Mirror finish every time.
— Precision Tooling Ltd. (USA)"Affidabile e Veloce"
Outstanding performance in high-speed dry cutting. TaeguTec quality is consistently the best for our CNC shop.
— Meccanica di Precisione (Italy)"Solid Productivity"
The TT8115 grade is very stable at high heat. Great for high-volume automotive parts.
— Industrial Machining (Germany)Frequently Asked Questions
1. When should I use TT8115 over TT8125?
Choose TT8115 for continuous finishing at high cutting speeds. Use TT8125 if your process involves vibrations or light interruptions.
2. Can this insert be used with coolant?
Yes. While TT8115 is excellent for dry machining due to its Alumina coating, it performs exceptionally well with high-pressure coolant as well.
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.