CNMG 120404 NS9530 Wendeplatten - Tungaloy

Take advantage of a finishing-grade insert that combines sharp cutting edges, consistent surface quality and straightforward holder compatibility for an efficient turning process; order directly through Metav Werkzeuge or consult our specialists for application advice.

CNMG 120404 NS9530 turning insert by Tungaloy — uncoated cermet, 0° rake

The CNMG120404 NS9530 Tungaloy indexable insert is a rhombic ISO turning insert designed for finishing steel with a sharp cutting edge and low cutting forces.

• ISO rhombic CNMG geometry
• Uncoated cermet grade NS9530
• 0° rake angle for finishing
• Double-sided chipbreaker, with hole

Superior surface finish for finishing cuts

The uncoated cermet grade NS9530 is formulated for low cutting forces and a consistently fine surface finish when performing finishing cuts on steel. Its edge geometry promotes stable contact and reduced built-up edge formation during continuous cutting, which results in fewer downstream grinding or polishing steps. For operations where surface quality matters, choosing a finishing-grade insert reduces cycle time and improves first-pass part acceptance.

Geometry that supports stable machining and repeatability

The CNMG form with an 80° included angle and a 0.4 mm corner radius provides a reliable compromise between strength and edge definition. The 0° relief (rake) contributes to predictable cutting behaviour on small depths of cut, while the rhombic plate shape ensures compatibility with a wide range of ISO holders. These geometrical features translate into reproducible performance on batch production runs and help maintain consistent part dimensions over longer tool life.

Material and grade benefits explained

Being an uncoated cermet, the grade focuses on edge integrity and excellent finished part appearance rather than aggressive wear resistance at high temperatures. This makes the insert particularly suitable for continuous finishing passes on steel where thermal loads are moderate and surface integrity is critical. The absence of a coating can also simplify edge preparation and minimise the risk of coating-related chipping when light, precise cuts are required.

Practical use and holder compatibility

The ISO designation reflects standardised dimensions and tolerances, so compatibility with the correct external holder or boring bar is determined by plate form, relief angle, tolerance class, fastening method, size and thickness. The insert is double-sided and supplied with a cylindrical hole for secure mounting; matching the insert to a suitable clamping set and fastener completes a robust system for turning tasks. Selecting the appropriate chipbreaker and grade ensures productivity while preserving part quality.

For precise finishing on steel components, contact Metav Werkzeuge for application support and secure supply of Tungaloy CNMG inserts — order enquiries and technical guidance are available via Metav Werkzeuge.

Technical data

• Article number: 6998144
• Manufacturer SKU: TUN6998144
• Model series: ISO turning indexable inserts
• ISO designation: 120404
• Designation: CNMG120404

Facts

• Inscribed circle: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Included angle: 80°
• Rake/relief angle: 0°

Special features

• Grade: NS9530
• Cutting material: uncoated cermet
• Plate form: rhombic
• Chipbreaker: double-sided
• Hole: with cylindrical hole
• Typical application: finishing on steel

FAQ

What materials is this insert intended for? The NS9530 cermet grade is designed primarily for finishing operations on steel, delivering low cutting forces and high surface quality with the CNMG120404 geometry.

How does the 0° rake affect performance? A 0° rake provides predictable cutting behaviour for finishing passes; the CNMG120404 geometry with a 0° relief helps maintain edge strength while producing a fine surface finish.

Is the insert compatible with standard ISO holders? Yes, the ISO designation and rhombic form mean the insert is compatible with holders that accept CNMG plates, subject to matching by form, thickness and fastening method.

What are the measurable dimensions of the insert? The insert has a 12 mm inscribed circle, 4.76 mm thickness and a 0.4 mm corner radius, as specified for CNMG120404 grade NS9530.

Which chipbreaker should be used for finishing? The supplied double-sided chipbreaker is intended for controlled chip formation during finishing; selecting the correct chipbreaker variant and cutting parameters ensures the best surface and productivity.

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.