CNMG 120404 GH330 Wendeplatten - Tungaloy

Take advantage of the combination of a GH330 carbide grade, precise 0.4 mm corner radius, and ISO compatibility to raise turning productivity while maintaining edge stability and predictable tool life; order directly via Metav Werkzeuge or consult our specialists for application-specific advice.

CNMG 120404 GH330 CNMG120404 GH330 Tungaloy Turning Insert — rhombic ISO insert, 0.4 mm radius, with cylindrical hole

CNMG120404 GH330 is an ISO rhombic turning insert optimised for external and internal turning operations, offering a balanced mix of wear resistance and toughness for versatile machining.

• ISO rhombic form, 12 mm size
• GH330 carbide grade for wear and toughness
• 0.4 mm corner radius, precise edge
• Double-sided chipbreaker, with cylindrical hole

Higher throughput from a balanced carbide grade

The GH330 grade used in this insert is developed to deliver a dependable balance between wear resistance and toughness, which directly supports longer cutting times and fewer interruptions for insert changes. By combining this carbide formulation with a stable cutting geometry, the insert reduces unexpected edge breakdowns and maintains performance across a wide range of steels and cast materials. The result is measurable productivity gains and more consistent cycle times in batch and single-part production.

Secure clamping and straightforward holder matching

Compatibility with toolholders is governed by the insert’s form, clearance angle, tolerance class, mounting style, size and thickness; matching these parameters ensures reproducible seating and minimises vibration. The rhombic shape and the presence of a cylindrical hole support stable fixation in many ISO-standard holders, while the 0° clearance angle contributes to controlled metal flow at the cutting edge. Clear reference to these characteristics simplifies selection of the correct outer holder or boring bar and reduces setup time.

Geometry tailored for reliable surface finish and chip control

The combination of a 0.4 mm corner radius and a double-sided chipbreaker produces a predictable cutting action that improves surface integrity and chip formation. A small corner radius improves dimensional control on shoulder finishes and short-turning operations, while the double-sided chipbreaker extends the service life by offering two usable cutting edges per side. Together, these features support repeatable part quality and reduced rework, which is particularly valuable in fine-detail turning or when working with varying material batches.

System approach for efficient tool management

Consider the complete system: an ISO turning insert, the appropriate outer holder or boring bar, a compatible backing pad or clamp set, and spare screws. Standardised geometry and the ISO designation simplify inventory management and tool-change routines, allowing production planners to standardise holders across several insert grades. If further process data or cutting parameter guidance is required, Metav Werkzeuge provides technical support and can supply cutting values adapted to the chosen material and operation.

For high-productivity turning with Tungaloy GH330 inserts, contact Metav Werkzeuge for availability and tailored advice — Metav Werkzeuge can assist with application checks and supply logistics.

Technical data

• Article number: 6801989
• Manufacturer SKU: TUN6801989
• SKU: 6801989-Tungaloy
• Manufacturer article number: 6801989
• Series: ISO-Drehwendeschneidplatten

Facts

• Corner radius: 0.4 mm
• Insert thickness: 4.76 mm
• Insert size: 12 mm
• Clearance angle: 0°
• Included angle: 80°
• ISO designation: 120404

Special features

• Material: Hartmetall (carbide)
• Grade: GH330 (Tungaloy)
• Shape: rhombic
• Chipbreaker: double-sided
• Hole: with cylindrical hole
• Intended application: turning

FAQ

What materials is this insert suitable for?
The CNMG120404 GH330 Tungaloy insert is designed primarily for turning operations and offers a broad material capability thanks to the GH330 grade, notably suitable for a variety of steels and mixed production batches.

How does the 0.4 mm corner radius affect machining results?
A corner radius of 0.4 mm provides improved dimensional stability and a better surface finish on shoulders and short-turning features while keeping cutting forces moderate for many general turning tasks.

Is the insert compatible with standard ISO holders?
The ISO designation and rhombic form are intended for compatibility with ISO-standard holders; correct matching requires checking form, clearance angle, size, thickness and mounting style of the chosen holder.

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.