CNMG 120408 AH120 Wendeplatten - Tungaloy

Take advantage of a PVD-coated carbide grade that combines wear- and chipping resistance with a consistently sharp cutting edge to keep turning processes reliable and productive; order original Tungaloy inserts via Metav Werkzeuge or consult the technical team for compatibility questions.

CNMG 120408 AH120 – Indexable turning insert for external and internal turning, 80° rhombic, Tungaloy

The CNMG120408 AH120 is an ISO-compliant indexable turning insert engineered for dependable external and internal turning where a sharp edge and high process security are required.

• PVD-coated carbide for high wear resistance
• 80° rhombic geometry for robust cutting edge
• 0.8 mm corner radius for precise surface finish
• Double-sided chipbreaker with cylindrical hole

Consistent tool life through a wear-resistant grade

The AH120 grade is a PVD-coated carbide developed for turning applications that demand a balance of sharp cutting edge and long tool life. The coating improves abrasion resistance and reduces thermal sensitivity during continuous machining, which supports stable chip formation and fewer unscheduled tool changes. For production environments this translates into predictable downtimes and improved throughput, because the cutting edge integrity is maintained under varied cutting conditions.

Geometry engineered for stability and surface quality

The 80° rhombic geometry and 0.8 mm corner radius provide a compromise between edge strength and finishing capability. The relatively small corner radius supports fine surface finishes on external contours while the rhombic shape delivers the mechanical robustness needed for interrupted cuts and heavier passes. The insert’s double-sided chipbreaker helps control chips and reduces built-up edge risk, easing downstream handling and improving overall process reliability.

ISO compatibility and system-level advantages

Designed as part of an ISO turning insert system, the plate thickness of 4.76 mm and the size designation (12) ensure straightforward matching with standard holders. Compatibility is determined by form, clearance angle, tolerance class, clamping method, size and thickness; a correctly matched holder and clamping kit will secure the insert reliably. The cylindrical hole and standardised geometry simplify inventory management and allow fast indexing and replacement, reducing fixture downtime and improving operational efficiency.

Application guidance for efficient turning

This insert is intended for general turning tasks where process security and edge sharpness are priorities; select the chipbreaker and grade to match workpiece material and machine stability for best results. The two-sided design provides multiple indexed edges, enabling economical use across batch runs. For heavy or unstable setups, favour conservative cutting parameters and robust holders to exploit the insert’s resistance to chipping while preserving surface quality.

To request original Tungaloy CNMG 120408 AH120 inserts, confirm holder compatibility or obtain application advice, contact Metav Werkzeuge at +49 2822 7131930 or info@metav-werkzeuge.com for direct assistance

Technical data

• Article number: 6854298
• Manufacturer SKU: TUN6854298
• SKU: 6854298-Tungaloy
• Name: CNMG120408 AH120 Tungaloy indexable insert
• Grade: AH120
• Material: Carbide
• Model series: ISO turning inserts

Core specifications

• Geometry: 80° rhombic
• Corner radius: 0.8 mm
• Thickness: 4.76 mm
• Size (inscribed circle): 12
• Clearance angle: 0°
• ISO code: 120408
• Hole: with cylindrical hole

Design & special features

• PVD-coated carbide grade AH120
• Double-sided chipbreaker
• Rhombic plate form
• Intended use: Turning (external and internal)
• Compatible with standard ISO clamping systems

FAQ

What is the main benefit of the AH120 grade?
The AH120 grade in the CNMG120408 AH120 Tungaloy indexable insert offers a wear- and chipping-resistant PVD-coated carbide formulation that maintains a sharp cutting edge and supports process security during turning operations.

Which geometry characteristics define this insert?
The insert features an 80° rhombic geometry, a 0.8 mm corner radius, a 4.76 mm plate thickness and a cylindrical hole, all of which contribute to mechanical stability and reliable clamping.

Is the insert compatible with standard ISO holders?
Yes. The CNMG120408 AH120 conforms to ISO dimensions; compatibility depends on holder form, clearance angle, tolerance class, clamping method, size and thickness and should be checked against the selected holder.

How does the double-sided chipbreaker affect tool economy?
The double-sided chipbreaker allows multiple indexed cutting edges and improved chip control, extending the number of effective tool edges and enhancing economical use across production runs.

Can this insert be used for internal turning as well as external turning?
Yes. The insert is specified for turning and is suitable for both external and internal turning when matched with an appropriate holder and cutting parameters.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.