CNMG 120408 GH330 Wendeplatten - Tungaloy

Benefit from the combination of GH330 wear resistance and a stable rhombic 80° geometry for predictable, high-quality turning results; order directly via Metav Werkzeuge or consult our specialists for holder compatibility and availability.

CNMG 120408 GH330 — Tungaloy indexable turning insert — rhombic 80° geometry, 0° clearance

The CNMG120408 GH330 is an ISO-standard indexable insert designed for precision external and internal turning in CNC and conventional lathes.

• ISO-standard indexable insert
• GH330 grade for wear resistance
• Rhombic 80° geometry, 0° clearance
• Double-sided chipbreaker with cylindrical hole

Consistent cutting performance for demanding turning

The insert is manufactured from carbide and supplied in Tungaloy’s GH330 grade, which combines wear resistance with sufficient toughness to maintain cutting-edge stability under varied turning conditions. The geometry—an 80° rhombic profile with a 0° clearance angle—reduces radial cutting forces and supports stable engagement during both external and internal operations. Thanks to the double-sided chipbreaker, the indexable design delivers repeatable chip control that improves surface finish and reduces the need for rework, translating into lower cycle-time variation for production runs.

Simple, secure integration with standard toolholders

Compatibility with holders is determined by insert form, clearance angle, tolerance class, fixing method, size and thickness; this ISO designation ensures straightforward matching to common tool systems. The insert’s cylindrical hole allows positive clamping, while the 4.76 mm thickness contributes to rigidity and vibration damping at higher feeds. The 0.8 mm radius offers a balance between strength and profile detail, making the component suitable for a wide range of turning tasks where edge life and dimensional consistency are required.

Practical selection guidance for process optimisation

Select the GH330 grade together with an appropriate chipbreaker to suit the workpiece material and machining stability: the grade complements the geometry by emphasising wear life and edge strength. For shops seeking economical performance, the combination of a robust carbide substrate and thoughtful chip control reduces tooling frequency and operator intervention. Where surface quality and repeatability matter, this ISO indexable insert supports predictable results and easier process documentation, helping to decrease scrap rates and improve overall productivity.

For reliable, wear-resistant turning with Tungaloy’s GH330 grade, contact Metav Werkzeuge for selection advice and availability — info@metav-werkzeuge.com | +49 2822 7131930.

Technical data

• Article number: 6802074
• SKU: 6802074-Tungaloy
• Manufacturer SKU: TUN6802074
• Product designation: CNMG120408 GH330 Tungaloy insert

Facts

• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Size: 12
• Angle: 80°
• Clearance angle: 0°

Special features

• Carbide substrate
• Grade GH330
• Double-sided chipbreaker
• Cylindrical hole for positive clamping
• ISO indexable turning insert
• Rhombic insert form

FAQ

What materials is this insert suitable for?
The CNMG120408 in GH330 grade is formulated for a broad range of turning tasks; select the chipbreaker and cutting data according to the specific workpiece material and required stability.

How does the 80° geometry benefit turning operations?
An 80° rhombic geometry lowers radial forces and enhances edge strength, which improves stability in external and internal turning and contributes to consistent surface finish.

Is the insert single- or double-sided?
This indexable insert features a double-sided chipbreaker, providing two usable cutting edges per orientation and helping to extend usable life between indexings.

What does the 0° clearance angle mean for set-up?
A 0° clearance angle gives a neutral relief that can assist in maintaining consistent contact conditions with certain holder geometries; verify holder compatibility by form, size and thickness.

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.