CNMG 120404 AH120 Wendeplatten - Tungaloy

Benefit from the combination of wear-resistant PVD coating, a sharp cutting edge and ISO compatibility to secure efficient turning operations; order the CNMG120404 AH120 Tungaloy insert via Metav Werkzeuge or request consultancy for machining optimisation.

CNMG 120404 AH120 turning insert — ISO rhombic indexable insert, PVD-coated carbide (Tungaloy)

CNMG 120404 AH120 is an ISO rhombic turning insert designed for reliable external and internal turning where a sharp edge and high process security are required.

• PVD-coated carbide AH120 for wear resistance
• ISO rhombic CNMG 120404 geometry
• Double-sided chipbreaker for chip control
• Cylindrical hole, ISO-compatible fastening

Stable process security thanks to a wear-resistant grade

The AH120 grade is a PVD-coated cemented carbide engineered for consistent performance in turning operations where a sharp cutting edge and low flank wear are priorities. The coated surface improves abrasion resistance and reduces tool-change frequency, which supports longer uninterrupted runs and predictable tool-life. Combined with the rhombic geometry, this results in process security that is particularly valuable in batch production and mixed-lot machining, enabling planners to rely on steady cycle times and reduced rework risk.

Reliable chip control for fewer interruptions

Equipped with a double-sided chipbreaker, the insert delivers controlled chip formation across a range of cutting conditions. Predictable chips reduce the need for manual intervention, lower the risk of surface damage and simplify swarf management. For operations that require consistent surface finishes or automated part handling, this chip control contributes directly to higher throughput and fewer machine stoppages, translating into measurable efficiency gains on the shop floor.

Precision geometry for straightforward integration

The CNMG format provides a robust seating and an effective cutting edge length for medium to heavy turning tasks. The insert features a 0.4 mm nose radius and a plate thickness of 4.76 mm, with a standard 80° included angle in a rhombic form. A cylindrical hole ensures secure fastening with ISO-compatible holders, while the 0° clearance angle supports predictable engagement and wear patterns. These dimensional consistencies make the insert easy to integrate into existing ISO tooling systems and simplify inventory management across multiple machines.

Practical guidance for selection and use

Select the chipbreaker and grade according to workpiece material, machining method and machine stability; the AH120 grade is recommended where a sharp cutting edge and robust fracture resistance are required. The insert is double-sided, enabling economical indexation, and its ISO conformity means replacement and matching with standard external holders or boring bars is straightforward. For customers planning process optimisation, this solution balances tool life, surface quality and part accuracy with clear maintenance benefits.

For demanding turning applications, choose Tungaloy AH120 indexable inserts for reliable process security — contact Metav Werkzeuge for tailored advice or to place an order via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6854296
• Manufacturer SKU: TUN6854296
• SKU: 6854296-Tungaloy
• Designation: CNMG120404
• Grade: AH120
• Material: Carbide
• Model series: ISO turning indexable inserts
• Manufacturer: Tungaloy

Core specifications

• Insert size: 12 mm
• Thickness: 4.76 mm
• Nose radius: 0.4 mm
• Clearance angle: 0°
• Included angle: 80°
• Hole: with cylindrical hole

Special features

• ISO rhombic CNMG geometry
• PVD-coated cutting grade AH120
• Double-sided chipbreaker
• Suitable for external and internal turning
• Compatibility depends on holder form, clearance, tolerance class, fastening, size and thickness

FAQ

What applications suit this insert best?
The AH120 Tungaloy CNMG120404 insert is intended for external and internal turning where a sharp cutting edge and secure, repeatable performance are required.

How does the chipbreaker affect performance?
The double-sided chipbreaker of the CNMG120404 promotes controlled chip formation, improving chip control and reducing the likelihood of surface damage during turning.

Can this insert be used with standard ISO holders?
Yes, the insert follows ISO dimensions and the cylindrical hole and rhombic form make it compatible with ISO clamping systems when the holder matches form, clearance and size.

How often can the insert be indexed?
The insert is double-sided, allowing economical indexing; the exact number of useful edges depends on machining conditions and workpiece material.

Which feature provides the most process stability?
The combination of the PVD-coated AH120 grade and the CNMG geometry delivers the greatest process stability through improved wear resistance and a reproducible cutting edge.

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.