CNGA 120408 LX21 Wendeplatten - Tungaloy

Take advantage of the combination of ISO‑standard compatibility, Tungaloy LX21 carbide performance and precise geometry for reliable turning results; order directly via Metav Werkzeuge or consult our specialists for application-specific recommendations.

CNGA 120408 LX21 — ISO turning insert by Tungaloy

The CNGA120408 LX21 Tungaloy insert is an ISO‑standard rhombic indexable cutting insert designed for external and internal turning in general turning applications.

*ISO-standard rhombic insert for turning *Tungaloy LX21 carbide grade for stable wear *0° clearance angle for versatile cutting *0.8 mm corner radius for precise profiling

Higher cutting performance with stable wear resistance

The CNGA120408 LX21 Tungaloy insert brings the benefits of a purpose‑designed carbide grade to demanding turning tasks: LX21 balances wear resistance and edge toughness to extend tool life without sacrificing surface finish. As an indexable insert conforming to ISO geometries, it enables consistent removal rates and repeatable part quality, contributing to predictable cycle times and reduced machine downtime. The rhombic form combined with the chosen grade supports economical batch production and shorter set‑up intervals.

Precision geometry for accurate profiles and repeatability

A small 0.8 mm corner radius and a plate thickness of 4.76 mm ensure accurate contouring and stable edge behaviour when machining narrow shoulders or fine features. The 0° clearance allows flexible approach angles while maintaining a sharp cutting edge for close‑tolerance profiles. These geometric attributes translate into fewer reworks and consistent dimensional control in both roughing and finishing passes, especially when machining components that demand repeatable radii and surface integrity.

Clear guidance on holder compatibility and system setup

Compatibility with standard tool holders is determined by the insert’s form, clearance angle, tolerance class, fastening style, size and thickness; selecting a holder that matches these parameters secures clamping stability and correct rake contact. The product integrates into common ISO turning systems alongside a suitable external holder or boring bar, and when combined with the correct clamping set and replacement screws it forms a reliable machining assembly that supports process stability and machinability.

Practical system thinking for production efficiency

The insert’s rhombic shape with a cylindrical hole simplifies positioning and indexing during tool changes, while the carbide substrate and the LX21 formulation reduce tooling consumption over longer production runs. Suppliers typically recommend matching the plate to a holder and underlay/clamping set engineered for the intended cutting forces; this system approach reduces vibration, improves insert life and enhances surface finish, helping to lower total cost per part and increase throughput.

For availability of Tungaloy LX21 inserts and application advice tailored to specific materials or cycle requirements, contact Metav Werkzeuge for technical consultancy at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6801834
• SKU: 6801834-Tungaloy
• Manufacturer SKU: TUN6801834
• Model series: ISO turning indexable inserts
• Material: Carbide

Facts

• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Plate size: 12 mm
• Clearance angle: 0°
• Insert angle: 80°

Special features

• Rhombic plate form
• Cylindrical hole
• LX21 Tungaloy grade
• Carbide substrate
• For external and internal turning
• ISO compatibility for standard holders
• No chipbreaker
• System components: holder, underlay/clamping set, spare screws

FAQ

What materials is this insert suitable for? The CNGA120408 LX21 Tungaloy indexable insert is formulated for general turning and provides good wear resistance and edge stability across a broad range of engineering materials when the correct grade and geometry are selected.

How does the 0.8 mm corner radius affect machining? A 0.8 mm corner radius offers a compromise between robustness and profile detail: it helps maintain edge strength for medium‑duty cuts while producing defined radii on turned features.

Is the insert compatible with standard ISO holders? Compatibility is achieved when holder form, clearance angle, tolerance class, fastening method, size and thickness match the insert; the CNGA120408 conforms to ISO geometry to facilitate correct holder pairing.

What does LX21 mean for cutting performance? The LX21 designation denotes a Tungaloy carbide grade that combines wear resistance and toughness suited to turning operations, enhancing tool life and stability during repetitive machining.

Does the insert include a chipbreaker? This variant is supplied without a chipbreaker; selection of a chip control feature should be based on workpiece material, cutting conditions and chip evacuation requirements.

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.