TNMG 220408 AH120 Wendeplatten - Tungaloy

Efficient, process-secure turning operations are supported by the combination of a PVD-coated AH120 carbide grade and the proven TNMG geometry, delivering a sharp cutting edge and stable machining performance; order directly via Metav Werkzeuge or consult the technical advisers for application-specific guidance.

TNMG 220408 AH120 Tungaloy indexable insert — PVD-coated carbide, 60° triangular insert for turning

The TNMG220408 AH120 indexable insert is designed for ISO-conforming external and internal turning where a sharp cutting edge and high process security are required.

• TNMG220408 geometry, 60° triangular insert
• AH120 PVD-coated carbide for wear resistance
• Double-sided chipbreaker for stable chip control
• Cylindrical hole for secure clamping

High-performance grade for reliable metalcutting

The combination of the AH120 grade and a PVD-coated carbide substrate provides resistance to wear and edge chipping under continuous operation. This insert geometry is engineered for consistent cutting behaviour in general turning applications, offering a sharp cutting edge that supports reproducible surface quality and dimensional stability. The result is a measurable reduction in tool-change frequency and greater process uptime when paired with a suitably rigid holder and correct cutting parameters.

ISO compatibility and secure clamping for repeatable accuracy

Designed as an ISO-standard turning insert, the geometry and tolerance class ensure compatibility with a wide range of external holders and boring bars. The cylindrical clamping hole and the triangular shape with a 60° lead angle enable secure fixation and quick indexability; the insert is double-sided, allowing reversal to a fresh cutting edge and thereby improving cost efficiency per edge. Important mounting parameters such as form, relief angle, tolerance grade, fastening method, size and thickness determine holder compatibility and should be matched accordingly.

Practical edge geometry and application guidance

A corner radius of 0.8 mm delivers a balance between edge strength and the ability to achieve finer surface finishes; it is suitable where a defined profile and stable cutting forces are needed. The 0° relief angle on this series supports predictable chip flow when combined with the double-sided chipbreaker, which moderates chips for safer evacuation and consistent machining. For system setup, an ISO insert is typically used with a corresponding external holder or boring bar, plus the appropriate clamp plate and replacement screws. For further specification queries or help selecting the right grade and chipbreaker for a specific workpiece and stability condition, technical support is available via info@metav-werkzeuge.com or +49 2822 7131930.

For reliable turning with Tungaloy performance, contact Metav Werkzeuge for application advice and ordering; technical consultants are available to recommend the suitable holder combination and cutting data

Technical data

• Article number: 6812074
• SKU: 6812074-Tungaloy
• Manufacturer SKU: TUN6812074
• Model series: ISO turning indexable inserts
• Material: carbide
• Grade/coating: AH120 (PVD-coated)
• Application: Turning
• Label: TNMG220408 AH120 Tungaloy indexable insert

Facts

• Insert angle: 60°
• Insert size: 22 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Hole: with cylindrical hole

Special features

• Triangular insert form
• Double-sided chipbreaker
• Cylindrical clamping hole
• ISO-standardised turning insert
• PVD-coated carbide grade AH120
• Suitable for external and internal turning
• Compatible with external holders and boring bars

FAQ

What types of turning operations suit this insert?
The TNMG220408 AH120 Tungaloy indexable insert is intended for both external and internal turning where a sharp edge and process security are priorities.

How does the AH120 grade improve tool life?
The AH120 PVD-coated carbide grade offers enhanced wear and chipping resistance, which extends edge life under continuous turning loads for the TNMG220408 geometry.

Is this insert reversible or indexable?
Yes, the insert is double-sided; the design permits indexing to a second cutting edge, improving cost efficiency per insert.

Which holder features are required for correct compatibility?
Holder compatibility is determined by insert form, relief angle, tolerance class, fastening method, size and thickness; the cylindrical hole supports secure clamping.

What surface finish can be expected with a 0.8 mm corner radius?
A 0.8 mm corner radius balances edge strength and finish quality, enabling good surface results when combined with appropriate cutting data and a stable setup.

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.