VNGA160408TM-2 WBH20 WBH20 Wendeplatten - Walter Tools

Take advantage of the combination of high wear resistance, consistent chip control and robust geometry for efficient hard-machining processes; order the insert directly via Metav Werkzeuge or consult our specialists for application support.

VNGA160408TM-2 WBH20 — Drehwendeschneidplatte (CBN) by Walter Tools, CBN grade for hard turning

The VNGA160408TM-2 WBH20 is an indexable insert designed for hard machining applications, delivering wear-resistant cutting performance for hardened steels and pre‑hardened materials.

• CBN grade WBH20 for hard turning
• Rhombus 35° geometry for versatile use
• Negative 0° rake for robust cutting action
• Corner radius 0.8 mm for improved surface finish

Reliable performance in hard turning operations

The insert uses a CBN cutting grade WBH20, developed for the demands of hardened steels and hard machining. As a result, the component offers stable chip formation and excellent wear resistance, which reduces the frequency of index changes and contributes to uninterrupted production. The CBN substrate is especially effective where conventional carbide grades wear rapidly, so the insert supports longer cutting campaigns and more predictable tool-life planning.

Geometry designed for process stability and surface quality

With a Rhombus 35° shape and a 0° (negative) relief angle, the insert provides a robust cutting edge that tolerates heavier feeds and interrupted cuts. The 0.8 mm corner radius balances edge strength with achievable surface quality, while the integrated chipbreaker 2 helps to control swarf formation under high contact pressures. These geometric choices translate into fewer surface defects and reduced rework for parts produced from hard materials.

Wide applicability across hardened and pre‑hardened steels

This grade is specified for ISO group H and is suitable for a range of hard turning tasks including pre‑finished and finish turning of pre‑hardened steel and fully hardened components. The insert’s construction, noted as part of the Walter CBN / Hartstoff series, makes it a reliable option when consistent results and repeatability are required across serial production or repair work where material hardness and abrasive wear are critical factors.

Operational benefits: productivity and predictable costs

By choosing a wear‑resistant CBN insert like this one, shops gain longer tool life and reduced downtime for index changes, which improves overall throughput and lowers effective machining costs per component. The stable performance supports higher feeds or more aggressive cutting strategies where the machine and fixture rigidity allow, increasing productivity without compromising dimensional control. As a rational investment, the insert helps to make hard machining processes more economical and easier to plan.

For demanding hard turning tasks the Walter Tools WBH20 insert is recommended — contact Metav Werkzeuge for application advice and availability at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number / SKU: VNGA160408TM-2-WBH20-WALTER
• Product type: Drehwendeschneidplatte (indexable insert)
• Series: Walter CBN / Hartstoff
• Grade: WBH20
• Execution: A
• ISO designation: VNGA160408TM-2 WBH20

Facts

• Corner radius: 0.8 mm
• Inscribed circle / size: 16
• Thickness: 04
• Relief angle: 0° (negative)
• Chipbreaker: 2
• Tolerance class: G

Special features

• Cutting material: CBN (WBH20)
• Geometry: Rhombus 35°
• Suitable for: hardened steel, pre‑hardened steel
• Application: hard machining, finishing and semi‑finishing
• Insert designation: VNGA160408TM-2

FAQ

What materials is this insert intended for?
The VNGA160408TM-2 WBH20 insert is intended primarily for hardened steels (ISO group H) and is also suitable for many pre‑hardened steel applications.

What advantage does the WBH20 CBN grade offer?
The WBH20 CBN grade delivers superior wear resistance and consistent edge stability in hard turning, which results in longer tool life and more predictable machining cycles.

How does the Rhombus 35° geometry affect cutting?
The Rhombus 35° shape provides a versatile cutting edge that supports different turning strategies while maintaining clamping stability and repeatable cutting conditions.

Is the insert suitable for finishing operations?
Yes — with a 0.8 mm corner radius and controlled chipbreaking, the insert enables good surface quality for finishing and semi‑finishing of hard components.

Can the insert handle interrupted cuts or heavier feeds?
The negative 0° relief and robust CBN grade make the insert tolerant of interrupted cuts and higher cutting forces, provided machine and workholding rigidity are sufficient.

Manufacturer: Walter Tools / Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany

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