CNGG 120402 NS520 Wendeplatten - Tungaloy

Benefit from ISO conformity and the NS520 cermet grade for consistent surface finish and predictable wear; the rhombic insert with a 0.2 mm corner radius and cylindrical hole delivers secure clamping and compatibility with standard holders. Order the insert directly via Metav Werkzeuge or consult the technical team for application advice and holder matching.

CNGG120402 NS520 CNGG indexable insert for turning — Tungaloy

The CNGG120402 NS520 is an ISO‑standard rhombic indexable insert designed for external and internal turning, optimised for finishing and light machining of steel.

• ISO‑standard CNGG form, consistent fit
• NS520 cermet for fine surface finish
• 0.2 mm corner radius for accurate profiles
• Cylindrical hole, secure clamping

Predictable performance for productive turning

The ISO‑standard geometry ensures repeatable seating and interchangeability across compatible holders, enabling stable cycle times and predictable tool changes. With the NS520 composition — a cermet or coated cermet grade — the insert is tailored for finishing and light machining of steel where surface integrity and dimensional accuracy matter. The indexable insert concept reduces downtime through quick insert changes and helps to maintain a continuous production flow while preserving component tolerances.

Achieve consistent surface quality with controlled wear

For operations where surface finish and uniform wear are priorities, the combination of a cermet grade and the insert geometry yields tangible benefits. Cermet materials balance wear resistance and polishability, so components emerge with improved surface texture and minimal edge breakdown over longer runtimes. The result is fewer reworks and a more consistent first‑pass quality, particularly on turned parts requiring tight dimensional control and refined surface appearance.

Secure seating and accurate profile generation

The rhombic plate form paired with an 80° approach angle and 0° clearance creates a stable cutting position for profile accuracy. The 0.2 mm corner radius supports fine detail and prevents premature corner chipping when machining contours, while the cylindrical hole ensures reliable clamping and correct axial location in holders designed for ISO‑CNGG plates. The plate thickness of 4.76 mm and 12 mm size harmonise with common clamping systems; compatibility must be checked against holder form, tolerance class and fastening method before installation.

Flexible chip control and selection guidance

Equipped with a double‑sided chipbreaker, the insert allows reversal and continued use of both cutting edges to extend service life and optimise cost per edge. Selecting the right chipbreaker, grade and holder stability is critical: the NS520 grade favours finish passes and light cuts, whereas alternative grades would be chosen for roughing or higher feed rates. For complex parts or mixed‑material batches, Metav Werkzeuge’s technical advisers can provide tailored recommendations to match process stability with the required surface and dimensional outcomes.

Contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930 to review the suitability of the Tungaloy CNGG120402 NS520 insert for specific applications and to request ordering and compatibility support

Technical details

• Article number: 6801853
• Manufacturer item number: 6801853
• Manufacturer SKU: TUN6801853
• SKU: 6801853-Tungaloy
• Model series: ISO-Drehwendeschneidplatten

Core data

• Shape: rhombic
• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.2 mm
• Approach angle: 80°
• Clearance angle: 0°
• Hole: cylindrical

Materials & features

• Material: cemented carbide
• Grade/coating: NS520 (cermet / coated cermet)
• Chipbreaker: double‑sided
• Application: turning
• System: ISO indexable insert, compatible with appropriate holders

FAQ

What materials is this insert designed to machine?
The NS520 grade is optimised for machining steel in finishing and light cutting operations; the CNGG form is suited to common steel turning tasks requiring good surface finish.

How to verify holder compatibility with the insert?
Compatibility depends on insert form, clearance angle, tolerance class, clamping style, size and thickness; confirm the holder is specified for ISO CNGG geometry before fitting the insert.

What advantages does the NS520 cermet offer?
NS520 provides enhanced surface finish and even wear behaviour compared with some carbide grades, making it suitable for finishing passes where component appearance and dimensional stability are important.

Can the insert be used on both sides?
Yes, the double‑sided chipbreaker permits turning over to the second cutting edge, extending usable life per insert and improving cost efficiency.

Is the insert supplied ready to mount?
The plate is delivered as an ISO indexable insert with a cylindrical hole for clamping; ensure the correct screws and clamp or seat are used as specified by the holder manufacturer.

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.