CNMG 120412 NS520 Wendeplatten - Tungaloy

Take advantage of the combination of NS520 cermet performance, precise CNMG geometry and ISO compatibility for consistent finishing results; order directly via Metav Werkzeuge or request technical advice for optimal tool selection.

CNMG 120412 NS520 turning indexable insert — Tungaloy, ISO turning insert, rhombic form, 80°

The CNMG120412 NS520 is an ISO-standard turning indexable insert developed for fine to light finishing of Stahl, delivering consistent surface quality and even wear in serial production.

• Consistent surface finish and dimensional control
• NS520 cermet grade for high-quality finishing
• Rhombic CNMG form with 80° included angle
• Double-sided chipbreaker; cylindrical hole

Precision finishing for reliable surface quality

The rhombic geometry combined with the NS520 cermet composition is engineered for finishing operations that demand tight tolerances and a superior surface appearance. The insert’s 1.2 mm corner radius and 80° included angle support stable cutting conditions and reduce vibration in marginal setups, which results in fewer rework cycles and predictable part conformity. Cermet substrates deliver a fine edge and consistent wear pattern, so dimensional control is maintained over longer tool lives compared with unoptimised alternatives.

Seamless compatibility within ISO tooling systems

As an ISO-normed component, the insert is designed to match holders and adaptors when form, relief angle, tolerance class, mounting method, size and thickness are respected. The component is supplied with a cylindrical hole, enabling secure clamping and straightforward replacement. Compatibility checks should be performed against the chosen toolholder specification; when correctly combined, the system enables rapid index changes and minimises machine downtime, supporting continuous, efficient production.

Consistent edge life for predictable production

The NS520 coating and cermet chemistry promote even wear and maintain a sharp cutting edge during finishing passes. This results in repeatable surface quality and reduces scrap rates across batches. The double-sided chipbreaker design provides two usable edges per index, improving cost-efficiency and inventory rotation. For operations where finish and repeatability are priorities, this combination supports steady throughput and lowers total machining cost per part.

Application guidance for external and internal turning

Optimised for external and internal turning, the insert performs best in finishing to light material removal on Stahl, where surface integrity and dimensional accuracy are crucial. Select the double-sided chipbreaker and the NS520 grade when aiming for a balance between surface finish and tool life; for more robust interrupted cuts or unstable set-ups, consider alternate geometries or grades. The insert thickness (4.76 mm) and standard CNMG shape allow straightforward integration into common turning systems, while the cylindrical hole aids fixation stability during finishing cycles.

For tailored advice on using the Tungaloy CNMG 120412 NS520 in specific turning setups or to request an order through Metav Werkzeuge, please contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for expert assistance and fast availability

Technical Data

• Article number: 6802145-Tungaloy
• Manufacturer SKU: TUN6802145
• Manufacturer article number: 6802145
• Model series: ISO-Drehwendeschneidplatten

Facts

• Corner radius: 1.2 mm
• Included angle: 80°
• Relief angle: 0°
• Plate thickness: 4.76 mm
• Inscribed circle/size: 12 mm

Special features

• Material: Hartmetall
• Grade: NS520 cermet
• Chipbreaker: double-sided
• Hole: with cylindrical hole
• Geometry: rhombic (CNMG)
• Application: Turning (finishing to light machining of Stahl)

FAQ

Which materials is this insert best suited for?
The CNMG120412 NS520 insert is optimised for finishing operations on Stahl, offering enhanced surface quality and even wear for steel components.

How does the NS520 grade influence performance?
NS520 is a cermet grade designed for fine to light machining; the grade promotes a sharp cutting edge, improved surface finish and consistent tool wear when used for finishing applications.

Is the insert compatible with standard ISO CNMG holders?
Compatibility depends on holder form, relief angle, tolerance class, mounting and size; the insert is ISO-standard and will fit CNMG-design holders that match the specified dimensions and clamping method.

What benefits does the double-sided chipbreaker provide?
The double-sided chipbreaker offers two usable edges per index, increasing edge utilisation, improving cost-efficiency and simplifying inventory management in production.

How should the corner radius be selected for finish work?
The 1.2 mm corner radius on this insert balances edge strength and surface finish; it is suitable for achieving high-quality surfaces while maintaining robust edge performance in finishing cuts.

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.