CNGA 120408 DX140 Wendeplatten - Tungaloy

The combination of high-speed PCD performance, ISO-standard geometry and simple holder compatibility delivers consistently long tool life and fast cycle times for aluminium and non-ferrous work. Benefit from the DX140 grade’s abrasion resistance and specify the insert directly through Metav Werkzeuge or consult the technical team for matching holders and clamping sets.

CNGA120408 DX140 — Indexable turning insert for high-speed aluminium and non-ferrous machining, Tungaloy

The CNGA120408 DX140 is an ISO-standard indexable turning insert with a PCD cutting layer designed for external and internal turning of aluminium, non-ferrous metals and abrasive non-metals.

• PCD grade DX140 for high cutting speeds
• Long tool life in abrasive non-metal machining
• ISO CNGA120408 geometry for holder compatibility
• Rhombic 80° form with 0° clearance angle

Productivity gains from PCD technology

The PCD-coated cutting edge delivers markedly higher cutting speeds and prolonged service intervals compared with conventional carbide grades. The PCD layer in the DX140 grade resists abrasive wear, which means fewer tool changes and more uninterrupted machining time. For production environments where cycle time and repeatability matter, this results in measurable productivity gains. The PCD microstructure also produces a consistent edge, maintaining surface finish quality over extended runs.

System compatibility and correct clamping

ISO geometry and standard dimensions ensure straightforward integration into conventional turning toolholders. The rhombic 80° form and central fixing hole require matching by form, free angle, tolerance class, size and thickness to guarantee secure clamping and repeatable positioning. Where tool performance matters, select a holder with the appropriate seat and torque specification; correct assembly preserves the PCD edge and prevents micro-movements that shorten life. Clear guidance on holder selection minimises downtime from incorrect mounting.

Application advice and material suitability

This grade is optimised for machining aluminium, other non-ferrous metals and abrasive non-metals; it performs best at higher cutting speeds and with steady feed rates. Because the substrate is a robust carbide support beneath the PCD, the insert tolerates interruptions in cooling strategy and can be used with minimum quantity lubrication (MQL) or conventional flood coolant, depending on the component and machine. Choose feeds and speeds aligned to aluminium machining charts and adapt depth of cut to part rigidity for optimal chip control and surface integrity.

Operational benefits, economics and handling

The rhombic shape with a 0.8 mm corner radius provides a balance between edge strength and form accuracy, suited to general finishing and medium stock removal in non-ferrous components. The long tool life of the DX140 grade reduces tooling spend per part and lowers handling frequency, producing a favourable cost-per-component. Inserts are indexed quickly when an edge is worn, and the ISO standard form minimises inventory complexity. For guidance on cutting data, holder pairing or clamping torque, the Metav Werkzeuge technical advisors are available to help specify the correct assembly and spare clamping kits.

Contact Metav Werkzeuge for tailored advice on Tungaloy DX140 inserts and assistance in selecting the correct holder and clamping set for efficient turning operations

Technical data

• Article number: 6801836
• SKU: 6801836-Tungaloy
• Manufacturer SKU: TUN6801836
• Model series: ISO-Drehwendeschneidplatten
• ISO designation: 120408

Core specifications

• Cutting angle: 80°
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Clearance angle: 0°

Materials & features

• Grade/coating: DX140 (PCD)
• Substrate: carbide
• Plate form: rhombic
• Hole: with cylindrical hole
• Chipbreaker: none
• Application: turning; external and internal
• Typical workpiece materials: aluminium, non-ferrous metals, abrasive non-metals

FAQ

What materials is this insert best suited for?
The CNGA120408 DX140 insert from Tungaloy is optimised for aluminium, other non-ferrous metals and abrasive non-metals where PCD performance provides long tool life.

How does the DX140 grade compare to conventional carbide?
DX140’s PCD cutting layer offers superior abrasion resistance and higher cutting speeds than conventional carbide, resulting in longer service life and improved surface finish.

Which holders are compatible with the CNGA120408 geometry?
Compatibility depends on form, free angle, tolerance class, fastening, size and thickness; choose an ISO-compatible turning holder designed for CNGA inserts and verify seat and clamping specifications.

Is a chipbreaker included with this insert?
This insert is supplied without a chipbreaker; chip control should be achieved via cutting parameters and the chosen toolholder geometry.

What is the recommended corner radius and its use?
The insert has a 0.8 mm corner radius, offering a compromise between edge strength and contour accuracy suitable for finishing and medium stock removal in non-ferrous turning.

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.