CNMG 120404 GH330 Wendeplatten - Tungaloy

Take advantage of the combination of reliable wear resistance, ISO compatibility and a compact, double-sided design to reduce tool changes and maintain a steady production flow. Order the insert directly via Metav Werkzeuge or consult the technical team for application-specific recommendations.

CNMG 120404 GH330 ISO turning insert for turning — Tungaloy

The CNMG 120404 GH330 is an ISO-indexable, rhombic turning insert designed for external and internal turning applications where a balance of wear resistance and edge stability is required.

• ISO rhombic insert, 80° geometry
• Tungaloy GH330 carbide grade
• 0.4 mm corner radius for versatility
• Double-sided insert with cylindrical hole

Consistent cutting performance for reliable turning

The GH330 grade, developed by Tungaloy, combines wear resistance with sufficient toughness to sustain edge stability during interrupted cuts and variable feed conditions. As an ISO-standard insert, the geometry and tolerances ensure consistent seating and repeatable positioning in holders, which reduces vibration and contributes to a constant surface finish. The carbide substrate offers thermal stability at elevated cutting speeds, and the grade selection supports longer tool life compared with unoptimised alternatives, improving process economy and uptime.

Secure clamping and compatibility reduce setup time

Compatibility with clamping systems is determined by insert form, clearance angle, tolerance class, fixings, size and thickness. The rhombic form with an 80° geometry and a cylindrical hole provides secure mechanical location in many standard external holders and boring bars. The double-sided design halves the cost per usable cutting edge and simplifies inventory, while the standardised dimensions ease holder selection. As a result, set-up repetition is faster and machine availability is higher in serial production.

Geometry and edge preparation for adaptable machining

A 0.4 mm corner radius gives a balanced edge for medium-duty finishing and light roughing, helping to produce stable cutting forces and improved surface quality. The 0° clearance supports positive cutting action in conventional turning orientations and allows selection of appropriate chipbreaker and feed parameters for different operations. For operators less familiar with indexable geometry: the corner radius affects edge strength and finish, the clearance angle prevents rubbing behind the edge, and the insert angle controls radial engagement and tool strength. Selecting the correct chipbreaker and grade tailors the insert to the material and machining strategy.

System thinking for smoother production planning

ISO inserts function as part of a system: the insert, matching outer holder or boring bar, the support/clamping set and replacement screws form a complete machining package. Standardised inserts such as this one simplify procurement and spare-part management, freeing resources for process optimisation rather than constant tool reordering. The combination of a proven grade and carbide substrate delivers economical performance across varied turning tasks while supporting predictable tool-change intervals and lower overall tooling cost.

Contact Metav Werkzeuge for application-specific guidance on the Tungaloy CNMG 120404 GH330 turning insert and for information on stock availability — eMail: info@metav-werkzeuge.com; Tel: +49 2822 7131930

Technical data

• Article number: 6802005
• SKU: 6802005-Tungaloy
• Manufacturer SKU: TUN6802005
• Model series: ISO turning inserts

Core specifications

• Size: 12
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Clearance angle: 0°
• Geometry angle: 80°

Design & special features

• Shape: rhombic
• Hole: with cylindrical hole
• Sidedness: double-sided
• Grade: GH330
• Material: carbide

FAQ

What materials is this insert suited for?
The CNMG 120404 GH330 insert is a versatile carbide grade intended for turning; selection of a matching chipbreaker and machining parameters determines suitability for specific materials.

How is the insert clamped in the toolholder?
The rhombic form with a cylindrical hole and ISO dimensions enables secure mechanical clamping in compatible external holders and boring bars designed for CNMG inserts.

Can the insert be indexed to use multiple edges?
Yes, the CNMG geometry is double-sided; indexing the insert provides additional cutting edges and improves cost-efficiency per edge.

What does the 0.4 mm corner radius mean for surface finish?
A 0.4 mm corner radius offers a balance between edge strength and surface quality, supporting stable cutting forces and a consistent finish in medium-duty turning operations.

Is the GH330 grade suitable for interrupted cuts?
The GH330 grade from Tungaloy is formulated to balance wear resistance and toughness, offering good edge stability under conditions that include light interruptions.

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.