TNMA 160408 T5115 Wendeplatten - Tungaloy

Take advantage of the proven combination of CVD-coated carbide and a stable 60° triangular geometry for reliable chip control and consistent turning results; the insert’s 0.8 mm nose radius and cylindrical hole ensure secure clamping and repeatable performance. Order directly via Metav Werkzeuge or consult the team for application-specific advice.

TNMA 160408 T5115 — ISO triangular indexable insert for turning, Tungaloy

TNMA160408 T5115 is an ISO-standard triangular indexable insert engineered for external and internal turning in cast iron applications, featuring a 60° cutting geometry and a secure central hole for reliable clamping.

• ISO TNMA 160408 triangular geometry
• CVD-coated carbide grade T5115
• 0.8 mm nose radius, 60° cutting angle
• With cylindrical hole for secure clamping

High-efficiency cutting with controlled wear and stable edge

The triangular indexable insert offers a balance between productivity and tool life thanks to its CVD coating on a tough carbide substrate. This surface treatment enhances wear resistance while preserving the cutting-edge stability required when machining abrasive materials such as cast iron. The geometry reduces the need for aggressive feeds, which supports longer tool life and steadier surface finish on workpieces. Engineers benefit from predictable wear behaviour and fewer unscheduled tool changes, improving overall process efficiency.

Integration into existing turning systems with clear compatibility criteria

Compatibility with a toolholder is determined by the insert’s form, clearance angle, tolerance class, attachment, size and thickness. The TNMA form and 16 mm inscribed circle fit ISO-standard holders, while the 4.76 mm plate thickness and central cylindrical hole allow secure mounting and precise seating. Specifying the correct tolerance class and holder variant ensures repeatable clamping forces and minimal vibration, which in turn improves dimensional accuracy during both external and internal turning operations.

Grade selection and application benefits for cast-iron turning

The T5115 grade is a universal choice for cast iron, offering an even balance between abrasion resistance and edge strength. For workshops seeking stable chip formation and consistent surface quality, this grade reduces the risk of premature chipping and helps maintain cycle times across batches. When combined with a 0° clearance angle and 60° cutting geometry, the insert supports versatile machining strategies—from roughing to finishing—without frequent grade changes.

Practical notes on geometry and process optimisation

A 0.8 mm nose radius provides a compromise between edge strength and surface finish: larger radii increase corner life but demand higher cutting forces, while smaller radii favour fine finishes at the cost of edge robustness. The triangular shape permits multiple indexings, lowering tooling costs per part. Absence of a chipbreaker on this variant means the machining strategy should account for chip evacuation; the choice of feeds and speeds, and the stability of the setup, will determine chip form and process reliability.

Contact Metav Werkzeuge for tailored tooling advice and available stock of Tungaloy TNMA160408 T5115 inserts; technical consultation and order processing are handled directly by Metav Werkzeuge, email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6850295

• SKU: 6850295-Tungaloy

• Manufacturer's SKU: TUN6850295

• Manufacturer article number: 6850295

Facts

• Inscribed circle: 16 mm

• Plate thickness: 4.76 mm

• Nose radius: 0.8 mm

• Cutting angle: 60°

• Clearance angle: 0°

• ISO designation: TNMA160408

Special features

• Material: carbide

• Coating: CVD-coated

• Grade: T5115

• Shape: triangular

• Hole: with cylindrical hole

• Chipbreaker: none

• Typical application: turning

• Compatible with ISO-standard holders

FAQ

What materials is this insert intended for?
The T5115 grade is formulated primarily for cast iron machining; the TNMA160408 insert provides a balanced wear resistance and edge stability suitable for that material.

How does the insert mount to a holder?
Mounting uses the central cylindrical hole and ISO-standard seating; the triangular TNMA form and 4.76 mm thickness ensure correct positioning in compatible external or internal turning holders.

Is there a chipbreaker on this insert?
This variant is supplied without a chipbreaker; process parameters and clamping stability should be selected to ensure effective chip evacuation.

What advantages does the CVD coating provide?
The CVD coating increases abrasion resistance while maintaining a tough cutting edge on the carbide substrate, which promotes longer tool life and consistent surface quality.

Can the insert be indexed multiple times?
Yes, the triangular geometry allows several indexings to use fresh cutting edges, reducing tooling cost per edge compared with single-edge solutions.

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.