SNMG 120408 NS520 Wendeplatten - Tungaloy

Benefit from a finishing-focused cermet grade combined with ISO‑standard SNMG geometry for consistent surface quality and predictable wear behaviour; obtain the SNMG inserts directly via Metav Werkzeuge or consult our specialists for application matching.

SNMG 120408 NS520 indexable turning insert – for turning, Tungaloy

A SNMG120408 NS520 cermet indexable insert designed for finishing and light cutting operations in turning, offering stable wear and improved surface integrity.

• Cermet grade NS520 for finishing
• ISO SNMG geometry for broad compatibility
• Double-sided insert with cylindrical hole
• 0° clearance angle for precise contact

Achieve reliable finishing and repeatable dimensions

The insert is engineered around the NS520 cermet composition to deliver a balance between surface quality and tool life. In finishing passes, the fine-grained cermet helps maintain a consistent edge, reducing the need for rework and supporting tighter tolerances. The SNMG form follows ISO standards, so compatibility with a wide range of external holders and boring bars is predictable; selection is based on holder shape, clearance, tolerance class, attachment method, size and thickness. This makes the insert a pragmatic choice for job shops and production lines that prioritise dimensional control and consistent component finish.

Secure clamping and operational stability for turning

Designed as a double-sided plate with a cylindrical hole, the insert provides secure seating and the opportunity to index the second cutting edge when required. The square plate form and 90° included angle allow stable engagement in both external and internal turning operations, while the small 0.8 mm corner radius supports fine contour work and controlled cutting edge contact. Together, these attributes reduce vibration and support predictable chip formation, which is particularly useful when optimising cycle times without compromising surface integrity.

Material behaviour and process advantages of NS520 cermet

The NS520 grade suits finishing to light machining of steels, focusing on smooth wear patterns and excellent surface finish. Compared with coarse grades, this cermet promotes uniform abrasion rather than chipping, which helps preserve nominal dimensions over multiple indexings. The insert is available in uncoated or coated cermet variants depending on the chosen specification, allowing process engineers to select the best option for cutting speed and workpiece material. Where improved edge life and consistent results are required, the NS520 grade reduces unexpected downtime and contributes to predictable tool-change intervals.

Practical selection and process integration

When integrating the insert into an existing tool set, check holder compatibility for form, free angle, tolerance class, fastening method, size and thickness. The ISO designation simplifies filter and search operations when specifying tooling kits for a given machine station. For finishing cycles, pair this insert with a rigid holder and stable workholding to exploit the cermet’s tendency for even wear; when light machining is needed, the same geometry allows flexibility in feed and speed adjustments without sacrificing surface quality.

Contact Metav Werkzeuge to discuss application matching for the Tungaloy NS520 SNMG inserts; our consultants will recommend the correct holder interface and grade choice — eMail: info@metav-werkzeuge.com — Phone: +49 2822 7131930

Technical data

• Article number: 6806718
• Manufacturer SKU: TUN6806718
• SKU: 6806718-Tungaloy
• Brand: Tungaloy

Facts

• ISO designation: 120408
• Geometry: SNMG (square plate)
• Inscribed circle: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Included angle: 90°
• Clearance angle: 0°
• Hole: with hole
• Hole style: cylindrical

Special features

• Grade: NS520 (cermet / coated cermet)
• Double-sided indexable plate
• Designed for external and internal turning
• ISO‑standardised turning insert
• Focus on finishing and light machining of steel

FAQ

How does this insert differ from standard carbide finishing inserts?
The NS520 cermet insert combines cermet edge properties with the SNMG ISO geometry; unlike many standard carbide grades, NS520 focuses on even wear and superior surface finish during finishing passes.

Is the SNMG120408 NS520 compatible with existing SNMG holders?
Yes, the SNMG120408 NS520 follows ISO SNMG geometry; compatibility depends on holder form, clearance, tolerance class, fastening and thickness, all of which should be checked against the holder specification.

Can the insert be used for both external and internal turning?
The SNMG120408 with its square form and 90° included angle is suitable for external and internal turning applications where finishing or light machining is required.

What is the corner radius and why does it matter?
The insert has a corner radius of 0.8 mm which supports fine contouring and helps manage cutting forces during finishing, improving part surface quality and dimensional stability.

Is the NS520 available coated?
The NS520 is offered as a cermet grade and can be supplied as a coated cermet variant depending on the selected specification and application needs.

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.