TaeguTec CNMG120404ML TT5100 | Precision Cast Iron Turning Insert
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TaeguTec CNMG120404ML TT5100
High-Velocity Cast Iron Specialist: Sharp ML Geometry with Advanced CVD Wear Resistance
Product Overview
"Which carbide insert grade provides the longest tool life and lowest vibration when machining gray iron at high speeds?"
The TaeguTec CNMG120404ML TT5100 is an 80° rhombic insert engineered for ISO K (Cast Iron) turning. By utilizing the TT5100 CVD (Chemical Vapor Deposition) grade, this insert offers an incredibly hard alumina coating that resists abrasive wear common in cast iron machining. The ML (Medium-Light) chipbreaker features a sharp cutting edge designed to reduce cutting resistance and heat, making it ideal for thin-walled parts or setups where spindle load and vibration must be minimized while maintaining high surface Ra quality.
Key Features
A thick CVD Al2O3 coating specifically designed to withstand the abrasive nature of gray and ductile cast iron.
The sharp positive rake angle allows for smooth shearing action, reducing chatter and machine spindle pressure.
0.4mm radius combined with ML geometry delivers exceptional precision in finishing and light turning cycles.
Technical Specifications
Decoding CNMG120404ML
80° Rhom
0° Relief
Tolerance
Clamping
12.7mm IC
4.76mm S
0.4mm RE
Med-Light
| Unit System | Designation | I.C. (Inscribed Circle) | 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) | 220 - 550 m/min | 0.10 - 0.30 mm/rev |
| Ductile Iron (GGG40) | 160 - 400 m/min | 0.12 - 0.25 mm/rev |
Compatible Holders
Matches all standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external toolholders and boring bars.
Product Applications
- High-speed finishing of gray cast iron engine blocks and rotors.
- Machining of ductile iron pump housings where surface finish is critical.
- Precision turning of abrasive iron parts requiring tight dimensional control.
- Ideal for mass production cycles where consistency and high Vc are priorities.
TaeguTec Cast Iron Grade Benchmarking
| Grade Name | Technology Profile | Primary Application |
|---|---|---|
| TT5100 (CVD) | Black CVD Al2O3 Coating | Wear Resist: Continuous high-speed turning. |
| TT5080 (CVD) | High Toughness Substrate | Toughness: Interrupted and unstable cuts. |
Why Choose TaeguTec?
As a key member of the IMC Group, TaeguTec is a global leader in metalworking technology. The TT5100 grade combined with the ML chipbreaker represents a strategic advantage for manufacturers aiming for high spindle productivity. By selecting TaeguTec, you invest in industrial-grade consistency that reduces machine downtime, prevents scrap, and delivers the lowest total cost-per-part in professional CNC operations.
Verified Global Feedback
"Outstanding for Cast Iron"
Replaced our standard grades with TT5100 for finishing iron rotors. Surface Ra is consistently better across larger batches.
— Precision Foundry (Germany)"No More Chatter"
The ML breaker makes a huge difference on our thin-walled castings. Sharp, clean cuts with zero vibration.
— Automotive Machining (Japan)"Reliable Wear Life"
Very predictable wear. We can run these at high m/min and the edge holds up exceptionally well on abrasive gray iron.
— Tech Machining (USA)Frequently Asked Questions
1. Is TT5100 suitable for Steel (ISO P)?
No. TT5100 is a dedicated Cast Iron grade. For Steel, we recommend the TT8125 or TT8115 series.
2. What is the main benefit of the ML chipbreaker?
The ML breaker is designed for medium-to-light machining. Its sharpness reduces cutting pressure, which is vital for preventing vibration and heat buildup.