VNMA 120408 T515 Wendeplatten - Tungaloy

The combination of CVD-coated cemented carbide, a rhombic 12 mm geometry and a 0.8 mm corner radius ensures reliable performance in cast iron turning and simple integration into ISO tool systems; order the insert directly via Metav Werkzeuge or contact the consultants for tailored cutting data.

VNMA120408E T515 ISO turning insert — rhombic 12 mm, CVD-coated carbide by Tungaloy

VNMA120408E T515 is an ISO‑standard turning insert designed for economical external and internal turning of cast iron using compatible ISO holders and boring bars.

• CVD-coated carbide grade T515
• Designed for efficient cast iron turning
• Rhombic insert, 12 mm size, 35° lead angle
• Cylindrical hole for secure clamping

Consistent geometry for stable turning and predictable results

The rhombic insert shape with a 35° lead angle and a 0.8 mm corner radius provides a predictable cutting edge for both roughing and light finishing passes. These geometry choices reduce cutting forces in interrupted cuts and improve tool life by distributing wear over a defined edge length. The 0° clearance specification supports close control of the tool–workpiece engagement, while the rhombic form helps maintain accessibility in both external and internal turning. For engineers seeking reproducible surface quality, the defined geometry translates into fewer reworks and a more stable process.

Coating and grade designed for economical cast iron machining

The T515 grade is a CVD‑coated cemented carbide developed for cost‑efficient machining of cast iron materials. The chemical vapour deposition layer provides thermal resistance and maintains a sharp cutting edge under typical grey and nodular cast iron conditions, promoting consistent cutting speeds and extended tool life. When matched to a stable set‑up and appropriate cutting parameters, the coated substrate reduces the need for frequent insert changes and supports higher productivity levels without compromising surface finish.

System compatibility and secure clamping for reliable handling

As an ISO‑standard insert, compatibility depends on form, clearance angle, tolerance class, fastening method, size and thickness. This insert features a cylindrical hole for positive location and reliable clamping in compatible holders, a plate thickness of 4.76 mm and a 12 mm plate size, which align with many common ISO toolholders and boring bars. The package concept includes the ISO insert, matching outer holder or boring bar, shims/clamping sets and spare screws in typical systems, enabling straightforward replacement and inventory management in production environments.

Practical application guidance to improve process efficiency

Use this insert primarily for external and internal turning of cast iron, selecting the appropriate chipbreaker and grade according to stability and the presence of interrupted cuts. For less rigid set‑ups, favour conservative cutting depths and reduced feed rates to protect the edge; in stable conditions higher cutting speeds can be exploited thanks to the CVD coating. The insert’s design supports predictable chip flow when a matching chip control geometry is chosen, contributing to shorter cycle times and reduced machine downtimes for tool changes.

Contact Metav Werkzeuge for specific cutting data, stock availability and tailored application advice on the Tungaloy VNMA120408E T515 turning insert — phone +49 2822 7131930 or email info@metav-werkzeuge.com

Technical data

• Article number: 6760171

• SKU: 6760171-Tungaloy

• Manufacturer SKU: TUN6760171

• Model series: ISO‑turning inserts

• ISO designation: 120408

• Designation: VNMA120408E

• Label: VNMA120408E T515

Facts

• Corner radius: 0.8 mm

• Plate size: 12 mm

• Plate thickness: 4.76 mm

• Lead angle: 35°

• Clearance angle: 0°

• Hole: with hole

Special features

• Material: cemented carbide

• Coating: CVD

• Grade: T515

• Plate shape: rhombic

• Hole style: cylindrical hole

• Intended for: external and internal turning

• System components: ISO insert, compatible outer holder or boring bar, shims/clamping set, spare screws

FAQ

What materials is this insert optimised for?
The T515 grade is optimised for machining cast iron; the CVD‑coated cemented carbide substrate supports efficient cutting of grey and nodular cast irons.

Which holders are compatible with the VNMA120408E insert?
Compatibility is determined by form, clearance angle, tolerance class, fastening, size and thickness; the VNMA120408E fits ISO‑compliant holders that accept a rhombic 12 mm insert with a cylindrical hole.

What is the purpose of the cylindrical hole in the insert?
The cylindrical hole provides positive location and secure clamping when used with matching screws and clamping sets, improving repeatability in tool changes.

Is there a chipbreaker on this insert?
This designation is supplied without an integrated chipbreaker; chip control should be achieved by selecting an appropriate holder geometry or a matching chip control insert variant.

How does the T515 coating affect cutting parameters?
The CVD coating increases thermal resistance and edge stability, allowing for productive cutting speeds in cast iron while maintaining acceptable tool life and surface finish.

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.