CNMG 120408 GH330 Wendeplatten - Tungaloy

Take advantage of long tool life and consistent chip control thanks to the combination of a wear-resistant carbide grade and an optimised chipbreaker; this ensures steady productivity in turning operations. Order the insert directly via Metav Werkzeuge or consult our advisors for application-specific recommendations.

CNMG120408 GH330 indexable insert for Turning by Tungaloy — ISO CNMG geometry, 0.8 mm radius

CNMG120408 GH330 is an ISO-standard indexable turning insert designed for external and internal turning in a wide range of applications, combining a wear-resistant carbide grade with a double-sided chipbreaker for reliable, repeatable performance

• CNMG120408 geometry, ISO-standardised insert
• GH330 Tungaloy grade for wear and edge stability
• Double-sided chipbreaker for controlled chips
• 0.8 mm corner radius, rhombic form, with cylindrical hole

Consistent machining performance through optimised grade and geometry

The combination of the GH330 Tungaloy grade and the carbide substrate provides a balanced emphasis on wear resistance and edge stability, which reduces unexpected tool changes and contributes to predictable process cycles. The rhombic CNMG geometry with a 0.8 mm corner radius supports robust cutting edges for general-purpose turning while limiting notch wear in interrupted cuts. These characteristics translate into longer intervals between indexings and a reduction in non-productive time, making the insert suitable for production environments that prioritise throughput and reproducibility.

Improved chip control and surface quality with a double-sided chipbreaker

Built with a double-sided chipbreaker, the insert is set up to produce compact, controllable chips under a variety of cutting conditions. The chip control feature lowers the likelihood of entanglement and improves coolant access at the cut, which can enhance surface finish and tool life. A thickness of 4.76 mm and the 0° relief angle combine to offer stable clamping and resistance to bending under load, supporting consistent cutting forces and dimensional accuracy. Explaining technical terms: the double-sided chipbreaker means both faces carry the chip-forming geometry, so the insert is reversible and economical to use.

Seamless integration into existing tool systems and predictable handling

Compatibility with tool holders depends on factors such as form, relief angle, tolerance class, fastening method, size and thickness; the ISO-standardised design simplifies selection for common external and internal turning holders. The insert has a cylindrical hole for secure fastening and an approach angle of 80°, which moderates radial cutting forces and often helps to achieve a steadier cut on general-purpose steels and similar materials. Using ISO-standard inserts reduces inventory complexity and enables quick replacement during planned maintenance, improving shop-floor efficiency and reducing setup variability.

Contact Metav Werkzeuge to verify holder compatibility and secure original Tungaloy inserts and spare screws for uninterrupted production

Technical Data

• Article number: 6802078
• Manufacturer SKU: TUN6802078
• Label: CNMG120408 GH330 Tungaloy-Wendeplatte
• Series: ISO indexable turning inserts
• Material: carbide
• Application: Turning

Facts

• Corner radius: 0.8 mm
• Insert size: 12 mm
• Thickness: 4.76 mm
• Relief angle: 0°
• Approach/included angle: 80°
• Hole: cylindrical

Special features

• GH330 Tungaloy grade
• Double-sided chipbreaker
• Rhombic plate form (CNMG)
• ISO-standardised geometry
• Carbide construction
• With cylindrical hole, reversible insert

FAQ

What materials is this insert suitable for? The CNMG120408 GH330 Tungaloy indexable insert is designed for general turning and performs well across a broad range of materials where a balanced combination of wear resistance and toughness is required.

How does the GH330 grade affect tool life and performance? GH330 is a Tungaloy carbide grade formulated to offer good wear resistance and edge stability; with the CNMG geometry it delivers predictable tool life and reliable edge behaviour in production turning.

Is the insert reversible and how does that save costs? Yes — the double-sided chipbreaker means the insert can be indexed to use multiple cutting edges, reducing the number of inserts needed and lowering tooling costs per component.

What holder features are required for correct compatibility? Compatibility depends on holder form, relief angle, tolerance class, fastening method, size and thickness; the ISO CNMG format and the cylindrical hole ensure secure clamping in standard turning holders.

Does the 0.8 mm corner radius influence cutting behaviour? A 0.8 mm corner radius offers a compromise between edge strength and detail on the workpiece, improving edge durability on interrupted cuts while still allowing good surface finish on general turning tasks.

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.