CNMG 120408 AH905 Wendeplatten - Tungaloy

Take advantage of a wear‑ and chipping‑resistant PVD coating combined with precise rhombic geometry to maintain process security and extend tool life in turning operations; order directly via Metav Werkzeuge or consult our specialists for material‑specific recommendations.

CNMG 120408 AH905 turning insert by Tungaloy — PVD‑coated, 80° rhombic geometry

CNMG 120408 AH905 is an ISO‑standard indexable insert designed for general turning tasks where a sharp cutting edge and consistent process security are required

PVD‑coated carbide grade AH905
Double‑sided chipbreaker for stable cuts
ISO rhombic insert, 80° cutting edge
Cylindrical hole, 4.76 mm thickness

Reliable cutting performance and extended tool life

The combination of a PVD‑coated surface and a carbide substrate produces a robust cutting edge that resists abrasive wear and edge chipping. The AH905 grade is engineered to deliver process security in production environments where consistency matters, so fewer interruptions and less rework occur. This means a stable cutting performance over longer tool life, translating into predictable cycle times and improved cost efficiency per component. The emphasis here is on measurable reliability rather than marketing claims.

Simple integration into ISO turning tool systems

As an ISO standard insert, compatibility is achieved through matching the insert shape, clearance angle, tolerance class, fastening method, size and thickness with the chosen holder or boring bar. The CNMG120408 features a cylindrical hole and is double‑sided, allowing economical use of both cutting edges before replacement. These design choices reduce tool change frequency and support consistent clamping behaviour in the toolholder, which in turn minimises setup variability and shortens downtime during production changeovers.

Geometry that controls chip formation and surface finish

The rhombic plate form with an 80° included angle and a corner radius of 0.8 mm promotes reliable tool engagement and defined chip flow. A 0° clearance angle and the included double‑sided chipbreaker are intended to produce manageable chips when paired with the correct feed, speed and workpiece material. For external and internal turning applications, selecting the appropriate chipbreaker and matching AH905 to the workpiece material ensures a balance between surface quality and cutting stability, particularly where sharp edges and repeatable results are demanded.

For application guidance or stock enquiries for the Tungaloy CNMG 120408 AH905 insert, contact Metav Werkzeuge for tailored advice and immediate availability.

Technical data

• Manufacturer article number: 6859436
• SKU: 6859436-Tungaloy
• Manufacturer SKU: TUN6859436
• Model series: ISO turning indexable inserts
• Grade/coating: AH905, PVD-coated
• Material: Carbide

Facts

• Corner radius: 0.8 mm
• Plate size: 12 mm
• Thickness: 4.76 mm
• Included angle: 80°
• Clearance angle: 0°
• Hole style: cylindrical, with hole

Special features

• Rhombic insert geometry
• Double-sided chipbreaker
• ISO-compatible mounting
• Wear- and chipping-resistant grade
• Suitable for external and internal turning

FAQ

What workpiece materials is this insert suitable for?
The AH905 grade of this Tungaloy turning insert is designed for broad applicability; select the chipbreaker and cutting data according to the specific workpiece material to achieve optimal results.

Can the insert be used on both external and internal turning operations?
Yes, the CNMG 120408 AH905 insert is suitable for external and internal turning when combined with the appropriate holder and machining parameters.

How does the double‑sided design affect cost efficiency?
A double‑sided insert like CNMG 120408 enables two cutting edges per index, improving edge utilisation and reducing the frequency of insert replacement.

What geometrical parameters help with surface finish control?
The 80° rhombic form, 0.8 mm corner radius and the integrated chipbreaker support consistent chip control and contribute to improved surface quality in many turning applications.

Is the CNMG 120408 AH905 compatible with standard ISO toolholders?
Yes, compatibility with standard ISO holders depends on correctly matching insert form, size, thickness and fastening; the ISO designation ensures broad compatibility across suitable holders.

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.