CNGG120408M-MN3 WNN10 Wendeplatten - Walter Tools

Taking advantage of the robust WNN10 grade and the MN3 chipbreaker, this insert delivers consistent chip control and extended tool life for demanding turning operations; combine reliable geometry and a negative rake for heavy cuts. Order the CNGG120408M-MN3 WNN10 turning insert directly via Metav Werkzeuge or ask our consultants if needed.

CNGG120408M-MN3 WNN10 indexable turning insert — Rhombic 80°, MN3 chipbreaker by Walter Tools

The CNGG120408M-MN3 WNN10 is a coated carbide indexable turning insert designed for robust metalcutting where stable chip formation and repeatable edge performance are required, especially in medium to heavy turning applications

• Rhombic 80° geometry for stable cutting
• MN3 chipbreaker for secure chip control
• Coated carbide grade WNN10 for long tool life
• Negative rake 0° for heavy cuts

Consistent performance for productive turning

The combination of the WNN10 coating and the MN3 chipbreaker gives a balance between tool life and chip control that supports increased process stability. As a purpose-designed indexable insert, the geometry promotes reliable seating and repeatable cutting forces, which helps reduce vibration and improve surface finish. The negative 0° rake provides a robust cutting edge suited to interrupted cuts and heavier depths of cut, while the 80° rhombic shape ensures good strength at the corner and flexibility in approach angles.

Clear benefits for production efficiency and part quality

Built for productivity, this insert reduces the need for frequent tool changes by combining durable coated carbide with a proven chipbreaker form. Stable chips minimise downtime from clogging and rework, translating to fewer interruptions on the machine and improved cycle times. The corner radius 0.8 contributes to a strong cutting edge and consistent surface integrity, making the component a suitable option when predictable results and minimized scrap rates matter most in batch production.

Selection guidance and application considerations

The insert is supplied in the CNGG120408M-MN3 geometry with thickness code 04 and a plate size of 12, tolerance class G, and should be matched to the application using Walter’s product matrix for optimal grade selection. The part belongs to the Walter cutting-grade open series and is intended for users who require dependable, easily indexed inserts for turning tasks. For machining parameter setup and clamping advice, consult the grade documentation and machine tool guidelines to ensure cutting data and insert seating are optimised for the job.

Contact Metav Werkzeuge for tailored grade and parameter recommendations on Walter Tools inserts — eMail info@metav-werkzeuge.com or call +49 2822 7131930 to discuss the right specification for the application

Technical data

• SKU: CNGG120408M-MN3-WNN10-WALTER
• Label: Drehwendeschneidplatte CNGG120408M-MN3 WNN10 Walter Tools
• Designation: CNGG120408M-MN3 WNN10
• Product type: Drehwendeschneidplatte
• Manufacturer: Walter Tools

Facts

• Shape: Rhombus 80°
• Size: 12
• Thickness code: 04
• Corner radius: 0.8
• Free angle: 0° (negative)
• Chipbreaker: MN3
• Grade: WNN10 (coated carbide)
• Tolerance class / execution: G

Special features

• Part of Walter cutting-grade open series
• Coated carbide grade for extended wear resistance
• Negative-rake geometry for robust edge strength
• Designed for stable chip formation and repeatable seating

FAQ

What applications suit this insert best? The CNGG120408M-MN3 WNN10 turning insert is intended for medium to heavy turning where stable chip control and a robust cutting edge are required; suitability for specific materials should be checked against Walter’s product matrix.

How does the MN3 chipbreaker affect machining? The MN3 chipbreaker on this Walter Tools insert promotes secure chip control and reduces the risk of built-up edge, which helps maintain consistent surface finish and lowers the chance of machine interruption.

Can the 0° (negative) rake be used for interrupted cuts? Yes, the negative 0° rake increases edge strength and is suitable for interrupted and heavy cuts, providing greater resistance to mechanical shock during turning operations.

Which parameter data should be used when fitting this insert? Use the cutting data recommended in the Walter grade documentation and align feed and speed with the insert’s intended application; the CNGG120408M-MN3 geometry and WNN10 grade require optimisation per workpiece material as shown in the product matrix.

Manufacturer/Responsible: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from Walter Tools.