CNMG 120408 NS9530 Wendeplatten - Tungaloy

Take advantage of the insert’s sharp cutting edge, high surface-quality finish and reliable chip control for consistent finishing operations; order CNMG120408 NS9530 Tungaloy inserts via Metav Werkzeuge or consult our specialists for application advice.

CNMG120408 NS9530 Tungaloy indexable turning insert — uncoated cermet, 0.8 mm corner radius

A CNMG120408 NS9530 Tungaloy ISO indexable turning insert engineered for finishing steel in continuous-turning operations with a focus on surface quality and low cutting forces

• CNMG120408 ISO format insert
• Uncoated cermet grade NS9530 for steel
• 0.8 mm corner radius for fine finishing
• Double-sided chipbreaker and cylindrical hole

Consistent fine finishes with low cutting forces

The rhombic CNMG-style geometry combined with the uncoated cermet NS9530 offers a distinct advantage when the primary goal is superior surface finish. The 0.8 mm corner radius reduces edge pressure and keeps vibration low, which translates to improved dimensional consistency on external and internal profiles. For finishing cuts and continuous feeds, the sharp cermet edge reduces cutting forces and helps maintain tool life while producing a smoother micro‑finish. This makes the insert particularly suitable for steel turning when small depth‑of‑cut strategies are applied.

Reliable chip control for uninterrupted production

Built with a double-sided chipbreaker and a cylindrical hole for secure clamping, the insert ensures predictable chip formation during continuous machining. The chip control geometry supports even, short chips that evacuate reliably, reducing the risk of surface marking and downtime caused by chip entanglement. In practical terms, this means fewer interruptions in batch or serial production and a more stable process window for high‑quality finishing operations on standard steels.

Easy integration into ISO tool systems and holder compatibility

The insert conforms to the ISO CNMG120408 designation, so compatibility with indexable holders is determined by form, relief angle, tolerance class, fastening type, size and thickness. The 4.76 mm thickness and rhombic shape allow straightforward replacement in common external holders and boring bars designed for CNMG plates. Where holders accept ISO‑standard rhombic inserts, swapping to this grade provides an immediate upgrade in surface finish without the need for special clamping hardware.

Application benefits of the NS9530 grade

The NS9530 grade is a finishing sort developed for low cutting forces and a sharp edge, optimised for continuous cuts and small feed-depths. As an uncoated cermet, it delivers excellent edge stability and a high resistance to built-up edge on steels, which is why it is frequently selected for parts requiring tight surface specifications. The material selection favours sustained surface quality over aggressive stock removal, positioning the insert as a specialist solution within a finishing toolset.

Contact Metav Werkzeuge for tailored application advice or to order CNMG120408 NS9530 inserts; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6998261
• Manufacturer SKU: TUN6998261
• SKU: 6998261-Tungaloy
• Designation: CNMG120408 NS9530 Tungaloy-Wendeplatte
• Model series: ISO indexable turning inserts

Core specifications

• Corner radius: 0.8 mm
• Insert size: 12 mm
• Thickness: 4.76 mm
• Relief angle: 0°
• Hole: with cylindrical hole

Features / Applications

• Uncoated cermet grade NS9530
• Rhombic insert geometry (CNMG)
• Double-sided chipbreaker
• Suitable for finishing of steel
• ISO CNMG120408 compatibility
• Intended for external and internal turning

FAQ

What materials is this insert intended for? The CNMG120408 NS9530 Tungaloy uncoated cermet is intended primarily for finishing operations on steel, optimised for continuous cutting and small depths of cut.

Is the insert coated or uncoated? This variant is an uncoated cermet in grade NS9530, designed for a sharp cutting edge and low cutting forces on steels.

What is the corner radius and how does it affect the finish? The corner radius is 0.8 mm, providing a balance between edge strength and the ability to achieve fine surface finishes on turned components.

How does chip control work with this insert? Chip control is achieved via the double-sided chipbreaker; it produces short, manageable chips suited to continuous finishing cuts and reduces the risk of surface damage.

Which holders are compatible with this insert? Compatibility is governed by the ISO CNMG120408 geometry; holders matching the CNMG form, relief angle, tolerance and thickness are suitable for secure clamping and correct positioning

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.