TaeguTec CNMG120404ML TT5080 | Tough Cast Iron Turning Insert
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TaeguTec CNMG120404ML TT5080
The Tough-Choice Specialist: High-Stability CVD Grade for Challenging Cast Iron Cuts
Product Overview
"Which carbide insert grade is best for interrupted cuts or machining abrasive cast iron where edge chipping is a constant threat?"
The TaeguTec CNMG120404ML TT5080 is an 80° rhombic turning insert designed to bridge the gap between high speed and extreme toughness. Featuring the TT5080 CVD (Chemical Vapor Deposition) grade, this insert utilizes a specialized alumina coating that provides excellent heat resistance while maintaining a highly shock-resistant substrate. The ML (Medium-Light) chipbreaker is engineered with a positive rake and sharp geometry, significantly reducing cutting forces and vibrations, making it the ideal choice for ductile iron, gray iron, and even heavy-duty steel applications involving unstable setups.
Key Features
Built with a specialized substrate that absorbs mechanical shocks, perfect for interrupted cuts or crusty castings.
Sharp cutting edge reduces the power required from the machine spindle and minimizes workpiece vibration.
Multi-layer coating provides a durable thermal shield, extending tool life during abrasive ISO K machining.
Technical Specifications
Decoding CNMG120404ML
80° Rhom
0° Relief
Tolerance
Fixing
12.7mm IC
4.76mm S
0.4mm RE
Med-Light
| Unit System | Designation | I.C. Size | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120404ML | 12.7 mm | 0.4 mm |
| Imperial (ANSI) | CNMG431ML | 0.500" | 0.016" |
Recommended Cutting Parameters (ISO K)
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Gray Cast Iron (GG25) | 180 - 450 m/min | 0.12 - 0.35 mm/rev |
| Ductile Iron (GGG40) | 140 - 320 m/min | 0.15 - 0.30 mm/rev |
Compatible Holders
Fits all standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 toolholders and boring bars.
Product Applications
- Medium to light turning of cast iron motor housings and gearboxes.
- Machining of ductile iron components with interrupted surfaces.
- Turning operations on unstable workpieces where vibration reduction is critical.
- General-purpose turning of abrasive materials requiring high edge integrity.
TaeguTec Grade Comparison (Cast Iron)
| Grade Name | Core Strength | Best Use |
|---|---|---|
| TT5080 (CVD) | Toughness / Shock Resist | Interrupted: Unstable or heavy scaling. |
| TT5100 (CVD) | Maximum Wear Resist | Continuous: High-speed stable finishing. |
Why Choose TaeguTec?
A premier brand within the IMC Group, TaeguTec is synonymous with reliability in the toughest manufacturing environments. The CNMG 12 series combined with the TT5080 grade represents a strategic choice for shops that cannot afford edge failure. By selecting TaeguTec, you invest in engineered consistency that reduces scrap, protects your spindle, and delivers the lowest total cost-per-part in professional industrial machining.
Verified Global Feedback
"Interrupted Cut King"
We were chipping inserts every 10 parts on ductile iron castings until we switched to TT5080. Now we get a full shift per corner.
— Castings GmbH (Germany)"No More Chatter"
The ML breaker really helps on our lighter lathes. Very sharp, low pressure, and the finish is excellent for a tough grade.
— Precision Lathe Works (USA)"Solid and Predictable"
Consistent performance across a huge batch of gray iron housings. Edge wear was even and predictable.
— Heavy Industrial (Japan)Frequently Asked Questions
1. Is TT5080 better than TT5100?
TT5080 is tougher (better for shock), while TT5100 is more wear-resistant (better for high-speed continuous cuts). Choose TT5080 for interrupted or unstable conditions.
2. Can I use this for Stainless Steel?
While TT5080 can handle some steels, we recommend our dedicated ISO M grades for the best results in stainless steel.