CNMG 120408 NS520 Wendeplatten - Tungaloy

Take advantage of the combination of NS520 cermet finishing performance, ISO compatibility and a fine 0.8 mm corner radius for consistent surface quality and dimensional control. Order the insert directly via Metav Werkzeuge or ask our consultants if needed.

CNMG120408 NS520 Tungaloy indexable insert — cermet finishing grade, 0.8 mm radius

A CNMG120408 NS520 indexable insert designed for precision finishing and light turning operations on ISO-compliant turning systems

• ISO-compliant CNMG geometry for broad compatibility
• NS520 cermet grade for superior surface finish
• 0.8 mm corner radius for fine profile control
• Double-sided chipbreaker, cylindrical hole design

Predictable finishing and improved surface quality

The NS520 grade is a cermet or coated cermet cutting material developed for finishing to light machining of steel, focusing on outstanding surface finish and dimensional accuracy. Cermet grades combine ceramic hardness with metallic toughness to reduce built-up edge and deliver uniform wear across the cutting edge; the result is fewer reworks and more predictable batch quality. The CNMG geometry with a finely specified corner radius supports precise profile control on external and internal contours, while the double-sided design increases usable life per insert.

ISO compliance and holder compatibility explained

The insert follows ISO specifications for turning plates, which streamlines integration into existing tool systems. Compatibility is determined by the plate form, relief (clearance) angle, tolerance class, fastening method, size and thickness; these parameters must match the chosen holder or boring bar for secure clamping and repeatable results. The 0° clearance angle and rhombic CNMG shape suit neutral cutting positions where stability and even wear matter. The cylindrical hole provides reliable location and clamping repeatability on compatible seats.

Productive application advice for turning operations

Use this grade and geometry for finishing passes or light semi-finishing where surface appearance and tight tolerances are required. The double-sided chipbreaker helps control chip flow during interrupted cuts and lighter feeds, while the balanced edge preparation of NS520 supports consistent tool life. For best results, select a holder with appropriate rigidity and vibration damping, and pair the insert with cutting parameters optimised for cermet performance to extend life and reduce scrap.

Contact Metav Werkzeuge to specify holders and secure original Tungaloy CNMG120408 NS520 inserts for precise finishing applications

Technical Data

• Article number: 6802040
• SKU: 6802040-Tungaloy
• Manufacturer SKU: TUN6802040
• Model series: ISO-Drehwendeschneidplatten

Facts

• Corner radius: 0.8 mm
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Relief/clearance angle: 0°
• Included angle: 80°
• ISO code: 120408

Special features

• Cutting material: cermet / coated cermet
• Geometry: rhombic CNMG
• Chipbreaker: double-sided
• Hole: with cylindrical hole
• Application: turning (external and internal)
• Compatibility depends on form, relief angle, tolerance class, clamping, size and thickness

FAQ

Which materials is this insert designed for?
The CNMG120408 NS520 insert is intended primarily for finishing to light machining of steel, with the NS520 cermet grade optimised for surface quality and consistent wear.

Can this insert be used for both external and internal turning?
Yes, the rhombic CNMG geometry and neutral relief make the insert suitable for external and internal turning operations when matched to an appropriate holder.

Is the insert double-sided and indexable?
The CNMG plate features a double-sided chipbreaker and is indexable; both sides may be used subject to correct orientation and secure clamping.

How should compatibility with a tool holder be checked?
Compatibility should be verified by matching plate form, relief/clearance angle, tolerance class, fastening method, size and thickness to the holder specification before assembly.

What surface quality and tool life can be expected?
Using the NS520 cermet grade delivers improved surface finish and uniform wear when applied as a finishing or light machining grade under appropriate cutting conditions.

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.