CNGA120408TM-M2 WBH10 Wendeplatten - Walter Tools

High-performance CBN grade and rhombic 80° geometry provide stable edge life and consistent chip formation under hard-turning conditions; combined with a negative 0° rake and a 0.8 mm corner radius, this insert is engineered for reliable machining of hardened steels. Order the insert directly via Metav Werkzeuge or ask our consultants for application support.

CNGA120408TM-M2 WBH10 – indexable turning insert (CBN) for hardened steels, Walter Tools

CNGA120408TM-M2 WBH10 is an indexable turning insert designed for hard turning and finish operations in hardened steels, offering high wear resistance and predictable tool life.

• CBN grade WBH10 for hard turning
• Rhombus 80° insert geometry
• Negative 0° rake for stable cutting
• 0.8 mm corner radius for edge strength

Consistent performance when machining hardened materials

The CBN-based grade WBH10 is formulated for the demands of hardened steels and delivers superior wear resistance and edge stability compared with conventional carbide grades. CBN (cubic boron nitride) is a superabrasive that remains dimensionally stable under elevated temperatures, which reduces flank wear and extends cutting intervals. For production environments where tool life and repeatability affect throughput, this insert gives a measurable improvement in process reliability and reduces the frequency of tool changes.

Precision geometry that improves chip control and surface integrity

The Rhombus 80° geometry combined with the M2 chipbreaker and a negative 0° rake provides a balanced cutting action that supports secure chip formation and lowers the risk of built-up edge. A 0.8 mm corner radius increases edge robustness, helping to maintain consistent surface finish across interrupted or unstable cuts. These geometry choices enable predictable engagement with the workpiece, which in turn supports longer intervals between inspections and fewer unplanned stoppages.

Integration into machining processes and recommended applications

Designed for the Walter CBN / Hartstoff series, this insert is intended primarily for hard turning tasks and is also suitable for pre-hardened steel applications where high wear resistance is required. The insert’s tolerance class G and execution A ensure interchangeability in standard toolholders configured for CNGA-style plates. For process setup, select appropriate cutting parameters consistent with CBN tooling and the rigidity of the machine; the result is reduced tool wear and a more stable machining process that supports consistent part quality. For specific machining recommendations, consult Metav Werkzeuge’s technical advisers.

For demanding hard-turning requirements with Walter Tools’ WBH10 CBN grade, contact Metav Werkzeuge for tailored selection and delivery at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• SKU: CNGA120408TM-M2-WBH10-WALTER
• ISO designation: CNGA120408TM-M2 WBH10
• Series: Walter CBN / Hartstoff
• Grade: WBH10
• Manufacturer: Walter Tools

Facts

• Size: 12 mm
• Thickness code: 04
• Corner radius: 0.8 mm
• Rake angle: 0° (negative)
• Tolerance class: G

Special features

• Geometry: Rhombus 80°
• Chipbreaker: M2
• Suitable for: Hardened steels (H)
• Suitable for: Pre-hardened steel
• Execution: A

FAQ

Which materials are suitable for this insert?
The CNGA120408TM-M2 WBH10 insert is specified for hardened steels (ISO group H) and is also applicable to pre-hardened steel tasks where CBN performance is required.

What is the main advantage of the WBH10 grade?
WBH10 is a CBN-based grade that offers high wear resistance and stable cutting behaviour in hard-turning applications, extending tool life compared with conventional grades.

How does the Rhombus 80° geometry affect machining?
The Rhombus 80° form provides a versatile cutting edge and favourable approach angles for turning, supporting secure chip formation and good surface integrity in finishing passes.

Is the insert suitable for interrupted cuts?
The larger 0.8 mm corner radius and negative rake create a robust cutting edge that can withstand the mechanical shocks of interrupted cuts better than smaller radii.

What toolholder type is required for this insert?
This CNGA-style insert fits standard indexable turning toolholders designed for CNGA plates; ensure holders are rated for CBN tooling and the required clamping torque.

Hersteller: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen

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