CCMT 120408 AH120 Wendeplatten - Tungaloy

Benefit from a combination of PVD-coated AH120 carbide, an 80° rhombic geometry and a precise 0.8 mm nose radius to secure process reliability, consistent edge life and predictable surface quality in turning operations; order directly via Metav Werkzeuge or consult our specialists for application advice.

CCMT 120408 AH120 — Indexable Turning Insert by Tungaloy (PVD-coated carbide, 80°)

CCMT120408 AH120 Tungaloy indexable insert for general turning tasks, designed for external and internal turning with a wear- and fracture-resistant PVD-coated carbide grade.

• ISO rhombic insert, 80° cutting angle
• PVD-coated carbide AH120 for wear resistance
• 0.8 mm nose radius for precise profiles
• Single-side chipbreaker; cylindrical hole + 40°–60° countersink

Consistent process security and extended edge life

The AH120 grade is a PVD-coated carbide developed for stable, wear- and fracture-resistant performance in turning. Its composition promotes stable chip formation and a sharp cutting edge, which together reduce unexpected breakouts and rework. For production environments this translates into fewer tool changes, improved uptime and more consistent component tolerances. The combination of coating and substrate is aimed at maintaining cutting-edge integrity under mixed machining conditions, supporting reproducible cycle times and reduced scrap rates.

Geometry that maintains part quality and repeatability

The 80° rhombic geometry paired with a 0.8 mm nose radius gives a balance of edge strength and profile accuracy. The insert’s 7° relief angle and 4.76 mm thickness provide mechanical support during heavier cuts while still allowing accurate surface finishes on turned profiles. Compatibility with ISO-type holders depends on form, relief angle, tolerance class, attachment and thickness; these matching criteria ensure the insert seats correctly and delivers repeatable results. Clear seating and correct clamping reduce vibration and improve surface integrity on finished parts.

Practical system considerations and installation benefits

The insert is supplied with a cylindrical hole and single-side countersink (40°–60°) to ensure secure clamping and straightforward orientation in the pocket. The one-sided chipbreaker design suits a wide range of turning tasks where chip control and consistent cutting forces are required; select the chipbreaker and grade according to workpiece material, operation type and machine stability. System assembly commonly comprises an ISO turning insert, a matching external holder or boring bar, a support pad/clamping kit and replacement screws to simplify maintenance and keep changeover times short.

Why this insert is a strong choice for production turning

Specified as an ISO-compliant indexable insert, the CCMT120408 AH120 Tungaloy indexable insert delivers a pragmatic combination of process security, predictable tool life and straightforward holder compatibility — important factors for shops aiming to standardise tooling. The robust substrate and coating reduce down‑time from edge failures while the well‑defined geometry aids in achieving surface quality targets with minimal rework. Where consistent throughput and component quality are priorities, this insert supports efficient, repeatable machining cycles.

For application-specific selection and to confirm compatibility with existing toolholders, contact Metav Werkzeuge for tailored advice via info@metav-werkzeuge.com or by phone on +49 2822 7131930 — our consultants will recommend the appropriate grade and chipbreaker for the intended machining scenario.

Technical Data

• Manufacturer article number: 6858981
• Manufacturer SKU: TUN6858981
• SKU: 6858981-Tungaloy
• Model series: ISO turning indexable inserts
• Material: carbide
• Grade/coating: AH120 (PVD-coated)

Facts

• Insert designation: CCMT120408
• Nose radius: 0.8 mm
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Relief angle: 7°
• Cutting angle: 80°

Special features

• Rhombic plate form
• Cylindrical hole + single-side countersink (40°–60°)
• Single-side chipbreaker
• Designed for external and internal turning
• Compatible with ISO holders when matched for form and dimensions
• System components: insert, holder/boring bar, support pad/clamping kit, replacement screws

FAQ

What materials is this insert suitable for?
The AH120 grade is a wear- and fracture-resistant PVD-coated carbide designed for a broad range of materials in turning operations; selection of the exact chipbreaker and cutting parameters should follow the workpiece material and machine stability.

How does the CCMT120408 geometry influence cutting performance?
The 80° rhombic geometry with a 0.8 mm nose radius delivers a compromise between edge strength and profile accuracy, improving surface finish and repeatability when the insert is correctly clamped in an ISO-compatible holder.

Which clamping features ensure correct seating of the insert?
The cylindrical hole with a single-side countersink (40°–60°) secures the insert centrally and provides reliable orientation and clamping in the pocket when used with the appropriate screws and clamping kit.

Can this insert be used for both external and internal turning?
Yes, the insert is intended for external and internal turning; however, the chosen chipbreaker and operational strategy should reflect the workpiece material and machine rigidity for optimal results.

What is the manufacturer article number and SKU for ordering?
The item is listed under manufacturer article number 6858981 and SKU 6858981-Tungaloy for order and inventory reference.

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.