CGEU R2020- AH771 Wendeplatten - Tungaloy

Take advantage of the combination of PVD-coated carbide AH771 and ISO-standard geometry for consistent process security and extended tool life; order the insert directly via Metav Werkzeuge or consult our specialists for application support.

CGEU R2020-AH771 ISO Turning Insert (CGEUR2020-) – Tungaloy

The CGEUR2020- AH771 Tungaloy insert is an ISO-standard, rhombic turning insert designed for external and internal turning where a sharp cutting edge and process reliability are required

• ISO standard rhombic R2 insert
• PVD-coated carbide AH771 grade
• 30° clearance angle for stable cutting
• Cylindrical hole with 40°–60° countersink

High productivity through stable cutting geometry

The combination of an ISO-standard rhombic geometry and a 30° relief ensures stable chip formation and repeatable cutting conditions in serial and single-part production. The PVD coating on the carbide substrate reduces flank wear and supports a sharp cutting edge, which in turn maintains dimensional accuracy and surface finish over longer tool life. This results in fewer tool changes and improved uptime, supporting a predictable production flow without sacrificing cutting performance.

Compatibility and secure clamping for reliable positioning

Compatibility with a toolholder is determined by the insert’s form, clearance angle, tolerance class, fastening, size and thickness. The rhombic R2 shape and the cylindrical hole with double-sided countersink (40°–60°) allow secure clamping in common ISO holders and boring bars, reducing the risk of movement under load. Clear specification of these parameters simplifies holder selection and minimises set-up time, contributing to consistent results across different machines and operators.

AH771 grade and coating explained for application choice

The AH771 grade is a PVD-coated carbide developed for resistance to wear and chipping while preserving a sharp cutting edge. The coating enhances heat resistance and reduces adhesion of built-up edge, which is particularly beneficial when processing varied batch materials. Selecting the appropriate chipbreaker and this grade helps to match the insert to workpiece material, machining method and setup rigidity, ensuring process security and consistent component quality.

Practical system benefits and simple maintenance

As part of a conventional ISO insert system—insert, matching external holder or boring bar, shim/clamp set and replacement screws—this element is quick to replace, keeping maintenance intervals short. The geometry and coating combination improves tool life and surface quality, which reduces rework and downstream inspection. The CGEUR2020- AH771 insert is therefore suitable for operations that prioritise productivity, repeatability and cost-effective machining in turning applications.

Contact Metav Werkzeuge for application advice and availability of Tungaloy turning inserts; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6860518-Tungaloy
• Manufacturer article number: 6860518
• Manufacturer SKU: TUN6860518
• Model series: ISO turning inserts
• Material: Carbide

Numbers / Core technical data

• Plate thickness: 2.38 mm
• Clearance angle: 30°
• Geometry angle: 80°
• Plate size: R2
• Countersink angle: 40°–60°

Designs / Special features

• ISO designation: CGEUR2020-
• Shape: Rhombic
• Grade/coating: AH771, PVD-coated carbide
• Chipbreaker: Double-sided
• Hole: Cylindrical hole with double-sided countersink
• Application: Turning (external and internal)

FAQ

What machining operations is this insert intended for? The insert is intended for external and internal turning operations; the grade and chipbreaker should be selected to suit the workpiece and cutting conditions.

How is compatibility with holders defined? Compatibility is determined by the insert’s form, clearance angle, tolerance class, fastening, size and thickness; the CGEUR2020- geometry matches common ISO holder standards.

What are the benefits of the AH771 grade? AH771 is a PVD-coated carbide grade offering wear and chipping resistance while maintaining a sharp cutting edge, providing enhanced process reliability in turning.

What clamping style does the insert use? The insert features a cylindrical hole with a double-sided countersink (40°–60°) for secure clamping in standard ISO-compatible holders.

Which SKU identifies this Tungaloy insert? The Tungaloy turning insert is listed under SKU 6860518-Tungaloy and manufacturer article number 6860518.

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.