TaeguTec CNMG120408FG TT5100 | Precision Cast Iron Finishing Insert
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TaeguTec CNMG120408FG TT5100
Precision Cast Iron Specialist: High-Speed Finishing with Industrial Edge Strength
Product Overview
"Which carbide insert provides the best combination of abrasive wear resistance and superior surface quality for high-velocity cast iron finishing?"
The TaeguTec CNMG120408FG TT5100 is an 80° rhombic turning insert specifically engineered for ISO K (Cast Iron) applications. By pairing the highly wear-resistant TT5100 CVD grade with the FG (Finishing) chipbreaker, this insert excels in high-speed operations. The 0.8mm corner radius provides enhanced edge stability over smaller radii, making it perfect for semi-finishing to finishing cycles where dimensional accuracy and tool life are critical in abrasive gray and ductile iron machining.
Key Features
Thick Al2O3 layer offers incredible resistance to the abrasive wear and heat generated by high-speed cast iron turning.
Specifically optimized for fine finishing, ensuring excellent chip breaking even at light depths of cut to prevent surface scratching.
Offers a robust cutting edge that balances fine surface Ra with the ability to handle slight variations in casting skin.
Technical Specifications
Decoding CNMG120408FG
80° Rhom
0° Relief
Tolerance
Clamping
12.7mm IC
4.76mm S
0.8mm RE
Finish
| Unit System | Designation | I.C. (Inscribed Circle) | Radius (RE) |
|---|---|---|---|
| Metric (ISO) | CNMG120408FG | 12.7 mm | 0.8 mm |
| Imperial (ANSI) | CNMG432FG | 0.500" | 0.031" |
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Gray Cast Iron (GG25) | 250 - 600 m/min | 0.10 - 0.35 mm/rev |
| Ductile Iron (GGG40) | 180 - 450 m/min | 0.12 - 0.30 mm/rev |
Compatible Toolholders
This insert pairs seamlessly with standard DCLNR/L 12, PCLNR/L 12, and MCLNR/L 12 external and internal holders.
Product Applications
- High-speed finishing of automotive cast iron rotors and drums.
- Machining of gray iron pump housings and industrial gearboxes.
- Precision turning of ductile iron components in heavy machinery.
- Ideal for mass production environments where tool life predictability is paramount.
TaeguTec Grade Benchmarking (ISO K)
| Grade Name | Coating Type | Primary Application |
|---|---|---|
| TT5100 (CVD) | Black CVD Al2O3 | Highest Wear Resistance: High speed finishing. |
| TT5080 (CVD) | Gold CVD Al2O3 | High Toughness: Interrupted and unstable cuts. |
Why Choose TaeguTec?
As a key division of the IMC Group, TaeguTec is a global pioneer in metallurgical science. The TT5100 grade with the FG finishing geometry represents the cutting edge of industrial efficiency. When you choose TaeguTec, you invest in engineered consistency that reduces machine downtime, optimizes throughput, and delivers the lowest total cost-per-part in demanding cast iron production lines.
Verified Global Feedback
"Exceptional Life on GG25"
Replaced our standard iron inserts with these. Tool life increased by 35% on high-speed finishing passes. Incredible heat resistance.
— Precision Foundry (Germany)"Mirror Surface Finish"
The FG breaker works wonders. We’re getting a perfect finish on ductile iron parts at speeds we didn't think were possible.
— Automotive Machining (Japan)"Consistent and Stable"
The 0.8mm radius is very robust. It holds the tolerance across the entire batch with very little flank wear.
— Machining Solutions (USA)Frequently Asked Questions
1. Is the TT5100 grade suitable for Steel turning?
No. TT5100 is specifically optimized for abrasive Cast Iron. For Steel turning, please browse our TT8125 or TT8115 grade options.
2. What are the benefits of the 0.8mm radius over 0.4mm?
The 0.8mm radius offers a stronger cutting edge and higher feed capabilities, whereas 0.4mm is better for thin-walled parts or very light finishing.