CNMG 120408 AH120 Wendeplatten - Tungaloy

Combining PVD-coated AH120 grade with ISO conformity and a 0.8 mm corner radius delivers stable chip control and extended edge life for turning operations; order the CNMG120408 insert directly via Metav Werkzeuge or consult our advisers for process-specific recommendations.

CNMG120408 AH120 — Tungaloy indexable insert for turning with 0.8 mm corner radius

CNMG120408 AH120 is an ISO-standard, rhombic, PVD-coated carbide insert engineered for reliable external and internal turning applications

• ISO-standard rhombic insert
• PVD-coated carbide AH120 grade
• 0.8 mm corner radius for edge strength
• Double-sided chipbreaker, with cylindrical hole

Stable machining through optimised chip control

The PVD-coated carbide grade AH120 offers a balance of wear resistance and toughness, supporting consistent machining under varied cutting conditions. The insert’s double-sided chipbreaker helps to direct and subdivide chips during both light and moderate cuts, which reduces the risk of clogging and improves surface finish stability. For production environments where process security and repeatability matter, this geometry and coating combination contributes to fewer tool changes and steadier cycle times.

Geometry tuned for repeatable edge performance

As an ISO-compliant rhombic insert, the geometry emphasises repeatable seating and orientation in standard CNMG-compatible holders. The 0.8 mm corner radius increases edge strength and reduces susceptibility to chipping on interrupted cuts, while the 4.76 mm thickness and 12 mm size provide a solid contact face for secure clamping. The insert is supplied with a cylindrical hole to match common clamping systems; compatibility with a holder depends on form, relief angle, tolerance class, fastening type, size and thickness.

Practical system integration and recommended use

The insert forms part of a modular system: an indexable insert, a matching external holder or boring bar, a backing/clamping set and replacement screws. Typical applications include external and internal turning where a sharp cutting edge and process safety are required. Select the chipbreaker and grade to match the workpiece material and machining stability: the AH120 grade is particularly suitable when longer edge life and resistance to edge breakdown are priorities. If uncertainty exists about holder matching or application parameters, consult the technical team for tailored advice.

For application guidance or to order the Tungaloy CNMG120408 AH120 insert directly from Metav Werkzeuge, contact info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6811632
• Manufacturer SKU: TUN6811632
• Sales SKU: 6811632-Tungaloy
• Model series: ISO turning inserts

Core specifications

• Corner radius: 0.8 mm
• Insert size: 12 mm
• Thickness: 4.76 mm
• Relief angle: 0°
• Included angle: 80°
• Hole style: cylindrical

Materials & features

• Material: carbide
• Grade/coating: AH120 (PVD-coated)
• Chipbreaker: double-sided
• Insert shape: rhombic
• Application: turning
• ISO designation: CNMG120408
• Mounting: with hole (cylindrical)

FAQ

What materials is this insert suitable for? The CNMG120408 AH120 insert is designed as a wear- and chipping-resistant grade; the AH120 PVD-coated carbide is suitable across a broad range of steels and common turning materials when paired with the appropriate chipbreaker and machining parameters.

Is the insert indexable on both faces? Yes, the geometry includes a double-sided chipbreaker so the insert can be indexed to present a fresh cutting edge, contributing to economical tool utilisation for the CNMG120408 insert.

Which holder features are required for correct compatibility? Compatibility is determined by insert form, relief angle, tolerance class, fastening method, size and thickness; ensure the chosen holder matches the CNMG120408 dimensions and clamping style (cylindrical hole) for secure seating.

How does the 0.8 mm corner radius affect machining? A 0.8 mm corner radius increases edge strength and distributes cutting forces more evenly, improving resistance to chipping in interrupted cuts and contributing to more consistent surface quality.

Can this insert be used for internal turning? Yes, the insert is suitable for both external and internal turning operations provided the holder geometry and stiffness are appropriate for the intended cut.

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.