DNGA150404TM-2 WBH20 WBH20 Wendeplatten - Walter Tools

Take advantage of the combination of CBN cutting material, Rhombic 55° geometry and a 0.4 mm corner radius for stable, repeatable hard turning results; order the DNGA150404TM-2 WBH20 insert directly via Metav Werkzeuge or ask the consultants if additional machining data is required

DNGA150404TM-2 WBH20 Walter Tools — CBN turning insert, Rhombic 55° for hard turning

DNGA150404TM-2 WBH20 is a CBN indexable insert engineered for hard turning applications in hardened materials, delivering wear resistance and process stability

• CBN grade WBH20 for hard machining
• Rhombic 55° insert geometry
• 0° negative rake for robust cutting
• Corner radius 0.4 mm for edge strength

Consistent wear resistance for hardened materials

The WBH20 grade is a CBN cutting material designed specifically for hardened steel applications, which demands exceptional abrasion resistance and thermal stability. As a consequence, the insert ensures longer tool life and more predictable tool-change intervals in processes where workpiece hardness and cutting forces are elevated. The material’s microstructure supports stable edge integrity, reducing flank wear and helping to maintain dimensional tolerance during extended cycle times. This makes the insert particularly suitable for components that require repeatable accuracy in serial production.

Geometry engineered for stability and surface quality

The Rhombic 55° shape combined with a 0° negative rake provides a robust cutting edge that resists chipping under heavy loads while preserving surface finish. The 0.4 mm corner radius enhances edge strength and distributes cutting forces, which improves resistance to plastic deformation at the cutting edge. Because the insert presents a stable contact geometry, chip formation is predictable and vibrations are minimised, contributing to consistent part finish and reducing the need for rework. These geometric choices optimise the balance between tool life and the achievable surface quality in demanding hard-turning operations.

Application focus and production benefits

Designed for hard and pre-hardened components, the insert supports process reliability and efficiency in finishing and semi-finishing passes. The combination of CBN material and the insert’s form reduces cycle-time variability and can lower overall machining costs by extending the intervals between regrinds or replacements. In addition, the insert’s series alignment with Walter CBN / Hartstoff indicates suitability for a broad range of hard alloys and, where appropriate, high-strength cast materials. Process planners appreciate the predictable wear curve and the reduced scrap rates that follow from a stable, wear-resistant cutting edge.

Contact Metav Werkzeuge for application advice and to request the DNGA150404TM-2 WBH20 insert and compatible tooling recommendations

Technical data

• Article number: DNGA150404TM-2-WBH20-WALTER
• Designation: DNGA150404TM-2 WBH20
• Type: Drehwendeschneidplatte
• Brand: Walter Tools
• Grade: WBH20

Facts

• Inscribed circle: 15 mm
• Thickness: 0.4 mm (04)
• Corner radius: 0.4 mm
• Free rake angle: 0° (negative)
• Tolerance class: G

Special features

• Cutting material: CBN (WBH20)
• Series: Walter CBN / Hartstoff
• Geometry: Rhombic 55°
• Chip former: 2
• Suitable for: hardened steel; pre-hardened steel

FAQ

What materials is this insert intended for?

The DNGA150404TM-2 WBH20 insert is engineered for hardened steel and pre-hardened steel; the CBN cutting material provides the wear resistance required for hard turning tasks.

Which geometry and edge specifications are included?

The insert features a Rhombic 55° form, a 0° negative rake and a 0.4 mm corner radius, optimised for stable cutting and improved edge strength.

Can the insert be used for finishing operations on hardened components?

Yes. The CBN grade and the insert geometry are suited to finishing and semi-finishing hardened components where surface quality and dimensional control are important.

How does the WBH20 grade affect tool life and process stability?

WBH20’s CBN composition offers high abrasion resistance and thermal stability, which extends tool life and delivers more predictable, repeatable machining results in hard turning.

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

Protected trademarks and product names are the property of their respective owners. Brand names are mentioned for clarification only; there is no affiliation between Metav Werkzeuge and Walter Tools. The offered article is original, factory‑new merchandise from the manufacturer.