VBGW160408TM-2 WBH20C Wendeplatten - Walter Tools

Take advantage of the combination of CBN cutting performance, durable geometry and precise edge control for consistent results in hard turning applications; order via Metav Werkzeuge or consult the specialists for application-specific setup.

VBGW160408TM-2 WBH20C indexable turning insert — CBN grade for hard machining, Walter Tools

The VBGW160408TM-2 WBH20C is an indexable turning insert engineered for machining hardened steels and other highly abrasive materials, offering a wear-resistant cutting edge in a rhombic 35° geometry.

• CBN grade for hard turning
• Optimised for hardened steels H
• Rhombic 35° chip geometry
• 0.8 mm corner radius for stability

Reliable cutting with coated CBN for hard materials

The insert uses the WBH20C CBN grade, developed for demanding hard machining tasks where high abrasion and temperature resistance are required. CBN (cubic boron nitride) provides a much higher hardness than conventional carbides and maintains edge integrity under high contact stresses, which reduces flank wear and extends index life. For manufacturing environments that prioritise predictable tool change intervals and stable component tolerances, this material grade supports repeatable performance across series production runs.

Geometry engineered for repeatable surface quality

The Rhombic 35° geometry combined with a 0.8 mm corner radius and a 5° relief angle promotes stable cutting forces and consistent chip formation. The modest corner radius balances strength and achievable surface finish, reducing the risk of edge chipping during interrupted cuts. The geometry and chipbreaker configuration ensure controlled swarf evacuation, which helps maintain dimensional accuracy and reduces secondary finishing effort when processing hardened components.

Tailored application scope and process benefits

Designed primarily for the ISO group H (hardened steels), this insert is suitable for hard turning and finishing of steels that have been through heat treatment. The coated CBN grade performs well when machining high-hardness steels and, depending on process parameters, may also be applied to certain cast materials or superalloys. The result is improved process stability and often fewer rework cycles, which supports productivity gains in small-batch and series manufacturing alike.

Practical integration into tool systems and workflows

The designation VBGW160408TM-2 identifies a standard clamping form and size that integrates into common turning toolholders, simplifying inventory and changeover. The combination of a wear-resistant cutting material and robust geometry contributes to extended index life and reduced unplanned stoppages. For production planning, the predictable behaviour of the insert under high-wear conditions helps to align maintenance intervals and minimise overall machining cost per component.

For process advice on Walter Tools CBN inserts or to discuss application-specific parameters, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 — our specialists will provide tailored recommendations.

Technical Data

• Article number: VBGW160408TM-2-WBH20C-WALTER
• Designation: VBGW160408TM-2 WBH20C
• Series: Walter CBN / Hartstoff

Facts

• Plate size: 16 mm
• Plate thickness: 4.0 mm
• Relief angle: 5°
• Corner radius: 0.8 mm
• Chipbreaker: 2
• Tolerance class: G

Special features

• Grade: WBH20C (CBN-coated cutting material)
• Geometry: Rhombic 35°
• Series description: Walter CBN / Hartstoff
• Application group: H (hardened steels)
• Pre-hardened steel: suitable
• Execution: W

FAQ

Which materials is this insert designed for?
The VBGW160408TM-2 WBH20C from Walter Tools is designed primarily for hardened steels (ISO group H) and is intended for hard machining tasks; depending on process conditions, it can also be applied to certain cast materials or superalloys.

What does the WBH20C grade indicate?
WBH20C is Walter Tools’ CBN cutting-material grade formulated for high wear resistance and thermal stability, optimised for machining hard, abrasive steels.

How does the 0.8 mm corner radius affect performance?
A corner radius of 0.8 mm provides a robust cutting edge that reduces chipping risk and supports stable surface finish during finishing and semi-finishing operations on hardened components.

What are the key geometric identifiers of the insert?
The insert features a Rhombic 35° shape, size 16, a 5° relief angle and chipbreaker type 2, which together influence cutting direction, chip control and holder compatibility.

Is this insert suitable for finishing operations?
Yes — the CBN grade and controlled geometry make it well suited for finishing and precision hard turning, where consistent dimensional accuracy and surface quality are required.

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

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