CNMG 120412 NS9530 Wendeplatten - Tungaloy

Take advantage of the combination of uncoated cermet performance, precise ISO compatibility, and edge geometry optimised for finishing, ensuring consistent surface quality and efficient production. Order directly via Metav Werkzeuge or ask our consultants for application support.

CNMG120412 NS9530 Tungaloy — CNMG ISO turning insert for finishing (turning)

CNMG120412 NS9530 Tungaloy is a dedicated finishing insert for external and internal turning applications, designed to deliver low cutting forces and superior surface finish on steel.

• Uncoated cermet grade NS9530
• Sharp cutting edge for fine finishes
• Edge radius 1.2 mm for stable cuts
• ISO CNMG shape with cylindrical hole

High-precision finishing for steel turning

The NS9530 grade is an uncoated cermet developed for finishing on steel, offering a sharp cutting edge that reduces cutting forces and promotes an excellent surface finish. The substrate and cutting-edge geometry support continuous cutting and small depths of cut, which helps to minimise vibration and tool chatter during light passes. For machinists seeking stable, repeatable finishes, the combination of a 1.2 mm edge radius and the cermet composition produces a fine surface without excessive feed rates, translating into measurable improvements in part quality and reduced rework.

Compatibility, clamping and mounting benefits

Issued as an ISO CNMG120412 insert, the shape and dimensions conform to standard holders; compatibility is determined by form, clearance, tolerance class, fastening, size and thickness. The insert is rhombic with an included angle of 80° and a cylindrical hole, enabling secure location and simple indexing in standard CNMG holders or boring bars. The specified thickness 4.76 mm and 0° clearance angle are typical for CNMG finishing applications and ensure a dependable seating and repeatable positioning when combined with the correct clamping set and replacement screws.

Machining performance: efficiency and predictable results

Choosing an uncoated cermet like NS9530 for finishing brings specific process advantages: lower cutting forces, reduced tendency to build-up edge, and enhanced surface integrity on steel. These characteristics often permit slightly higher cutting speeds in continuous operations while keeping feed rates modest for optimal finish. The double-sided chipbreaker increases versatility and cost-effectiveness, as each indexed side presents a fresh cutting edge. For production environments where consistent part appearance and tight tolerances are required, this configuration supports predictable cycle times and reduced inspection effort.

Practical handling and recommended use cases

The insert suits applications that prioritise surface appearance and dimensional control, such as shaft finishing, bearing journals and fine external profiles. Given the sharp, finishing-oriented geometry, it performs best with light depths of cut and steady feed to maintain edge integrity. When selecting a system, pair the insert with a rigid external holder or boring bar and ensure correct seat support and torque on the fastening screw. Spare parts for the system typically include the appropriate underlay, clamp kit and replacement screws to keep tool changeover swift and repeatable.

For finishing turning tasks, consult Metav Werkzeuge for application-specific advice or request the Tungaloy CNMG120412 NS9530 through our sales team at info@metav-werkzeuge.com or by phone at +49 2822 7131930 to ensure optimal holder selection and process settings.

Technical data

• Manufacturer article number: 6944544
• SKU: 6944544-Tungaloy
• Model series: ISO turning inserts
• Designation: CNMG120412

Facts

• Insert size: 12 mm
• Thickness: 4.76 mm
• Edge radius: 1.2 mm
• Included angle: 80°
• Clearance angle: 0°
• Hole: with cylindrical hole

Special features

• Grade: NS9530 (uncoated cermet)
• Substrate: cemented carbide
• Application: finishing on steel; continuous cuts and small depths of cut
• Chipbreaker: double-sided
• Shape: rhombic

FAQ

What applications suit this insert best?
The Tungaloy CNMG120412 NS9530 insert is intended for finishing operations on steel, such as shaft faces, journals and fine external profiles where a high surface finish is required.

Is this insert compatible with standard CNMG holders?
Yes, the ISO CNMG120412 geometry and the cylindrical hole make the insert compatible with standard CNMG external holders and boring bars that accept CNMG-size inserts.

How does the NS9530 grade affect cutting parameters?
The NS9530 uncoated cermet offers a sharp cutting edge and lower cutting forces, allowing emphasis on feed control and surface quality rather than heavy material removal; speeds can be adjusted according to machine stability and workpiece material.

Can both sides of the insert be used?
The insert features a double-sided chipbreaker, enabling indexing to a fresh cutting edge on both usable faces to extend service life and lower cost per edge.

What support components are required for mounting?
A matching CNMG external holder or boring bar, suitable underlay/locating pad, clamp kit and the correct replacement screw are required to ensure secure mounting and repeatable 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.