TPMN 160308 NS740 Wendeplatten - Tungaloy

Take advantage of the combination of ISO conformity, a cermet NS740 grade for fine finishing and a compact 0.8 mm corner radius to improve surface finish and dimensional control in turning operations; order directly via Metav Werkzeuge or consult the technical team for application advice.

TPMN 160308 NS740 — Tungaloy triangular indexable insert for turning, cermet grade, 60°

TPMN 160308 NS740 is a triangular ISO indexable insert designed for finishing to light turning of steel, offering consistent surface quality and predictable wear in production and job-shop environments.

• Cermet grade NS740 for fine finishing
• ISO triangular form with 60° cutting angle
• 0.8 mm corner radius for accurate profiling
• 11° clearance and 3.18 mm plate thickness

Superior finishing performance for turning operations

This indexable insert combines a cermet-based cutting grade with an ISO triangular geometry to focus on surface finish and dimensional accuracy in finish and light machining of steel. The NS740 grade is oriented toward stable, even wear rather than high-volume stock removal, which helps maintain tolerances across batches. In practice, this means fewer part reworks and more repeatable outcomes when turning shafts, shoulders and profiles where surface quality and control are critical. The triangular format with a 60° cutting angle supports a range of external and internal turning setups in standard holders.

Predictable tool life and consistent edge behaviour

The blend of a cermet substrate and the grade-specific treatment provides predictable wear behaviour, promoting longer intervals between index changes and predictable part quality over time. The modest 0.8 mm corner radius is engineered to balance edge strength and profile fidelity, reducing the risk of scalloping while keeping cutting forces manageable. Where best results matter, operators will appreciate that the insert’s design focuses on repeatable geometry rather than aggressive material removal, enabling more stable process windows for finishing passes.

Easy integration with standard ISO tool systems

Compliance with ISO dimensions and the TPMN form ensures straightforward compatibility with a wide range of external holders and boring bars; compatibility is determined by form, clearance angle, tolerance class, clamping method, size and thickness. The absence of a central hole and chipbreaker simplifies clamping considerations and keeps the insert suitable for holders designed for unholed triangular inserts. This modular approach aids rapid changeover and stock standardisation across toolrooms that rely on ISO formats for efficient inventory and quick tool swaps.

Practical benefits for production and job-shop use

Adopting this insert supports process stability and consistent part finish without complex setup changes. The 3.18 mm plate thickness and 11° clearance reduce the risk of interference in confined setups, while the triangular shape provides three usable cutting corners per index, offering cost-effective utilisation. For applications prioritising surface quality and consistent tolerancing—such as bearing journals, stepped shafts and small-diameter profiles—the insert helps streamline finishing cycles and simplifies scrap reduction strategies.

For tailored recommendations on using Tungaloy finishing inserts and to secure stock, contact Metav Werkzeuge for immediate assistance and ordering at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6850521
• Manufacturer SKU: TUN6850521
• SKU: 6850521-Tungaloy

Dimensions / Core data

• Size: 16 mm
• Thickness: 3.18 mm
• Corner radius: 0.8 mm
• Cutting angle: 60°
• Clearance angle: 11°

Design & features

• Material: cemented carbide
• Grade: cermet / coated cermet NS740
• Shape: triangular
• Chipbreaker: none
• Hole: without hole
• Application: turning (external and internal)
• Series: ISO turning indexable inserts

FAQ

What types of turning is this insert best suited for?
The TPMN 160308 NS740 Tungaloy indexable insert is intended for finish to light turning of steel, where surface quality and dimensional control are priorities rather than heavy stock removal.

Can the insert be used in standard ISO triangular holders?
Yes. The TPMN form follows ISO dimensions and is compatible with holders that match the insert’s form, clearance angle, tolerance class, clamping method, size and thickness.

How does the NS740 grade affect tool life and finish?
NS740 is a cermet-oriented grade focused on even wear and high surface quality; with the TPMN 160308 geometry this leads to predictable tool life during finishing passes and consistent part finish.

Is a chipbreaker included and how does that influence chip control?
This insert has no chipbreaker; chip control depends on cutting parameters and holder geometry. The lack of a chipbreaker simplifies clamping and is typical for inserts aimed at finishing.

Which materials can be machined with this insert?
The TPMN 160308 NS740 is optimised for steel machining in finishing and light-turning operations; selection of grade and cutting data should reflect workpiece material and stability.

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.