TNGA160408TM-3 WBH20 WBH20 Wendeplatten - Walter Tools

Benefit from the combination of high wear resistance, stable edge life and reliable hard‑machining performance; the insert supports consistent productivity when turning hardened steels — order the TNGA160408TM-3 WBH20 directly via Metav Werkzeuge or consult the technical team for application advice.

TNGA160408TM-3 WBH20 — Indexable turning insert, CBN grade for hardened steels (Walter Tools)

The TNGA160408TM-3 WBH20 is an indexable turning insert engineered for hard‑machining tasks, providing a robust cutting edge for the efficient machining of hardened steels and similar demanding materials.

• CBN grade WBH20 for hard turning
• Triangle 60° insert, 16 mm inscribed circle
• 0.8 mm corner radius for stable cutting edge
• Negative 0° rake angle for high cutting forces

Predictable performance for hardened materials

The use of CBN as the cutting material in this insert delivers high abrasion resistance, which directly translates into longer tool life and fewer interruptions for tool changes. Designed specifically for the machining of hardened steels, the geometry permits secure engagement at elevated cutting pressures; this means production runs with consistent dimensional results and reduced rework. The combination of a wear‑resistant grade and a robust edge form ensures steady performance even under the thermal and mechanical stresses typical of hard turning.

Robust geometry that stabilises cutting forces

A triangle 60° shape with a 0.8 mm corner radius gives the insert a sturdy cutting profile, improving edge stability and reducing chipping risk. The negative 0° rake angle supports high feed and depth‑of‑cut applications by shifting loads into the insert body rather than the edge, which is advantageous for interrupted cuts or heavy cross sections. For process planners this means a reliable balance between productivity and component quality, with the cutting geometry tailored to hold form tolerance under complex machining cycles.

Clear application range and simplified selection

This indexable insert is aimed at hard machining: workpiece groups classified under hardened steel are the primary target. The insert’s designation and grade simplify tool selection for applications where high wear resistance is essential, removing guesswork from the choice of cutting material. For operators less familiar with CBN technology: CBN (cubic boron nitride) is a superhard cutting material that sustains sharpness at high temperatures and is especially effective where conventional carbide wears rapidly.

Practical benefits for production and maintenance

Using a dedicated CBN turning insert reduces the frequency of tool changeovers and the need for complex dressing procedures, resulting in lower process downtime and improved throughput. The insert’s standardised dimensions and proven grade ensure repeatable clamping and indexing in established toolholders, supporting predictable maintenance intervals and easier spare‑part management. Where surface finish and edge integrity are critical, the insert contributes to consistent outcomes across batches, aligning with lean production and quality assurance targets.

For precision hard‑machining applications rely on Walter Tools expertise — order the TNGA160408TM-3 WBH20 through Metav Werkzeuge or contact Metav Werkzeuge’s technical advisers at info@metav-werkzeuge.com or +49 2822 7131930 for tailored recommendations

Technical data

• Article number: TNGA160408TM-3-WBH20-WALTER
• Designation: TNGA160408TM-3 WBH20

Facts

• Insert form: Triangle 60°
• Inscribed circle / size: 16
• Thickness: 04
• Corner radius: 0.8 mm
• Rake / clearance: 0° (negative)

Special features

• Series: Walter CBN / hard material
• Grade / sort: WBH20 (CBN cutting material)
• Intended for: hardened steels (H)
• Chipbreaker: 3

FAQ

What materials is this insert suitable for?
The insert is specified for the machining of hardened steels; the WBH20 CBN grade is optimised for high wear resistance when turning hardened steels.

How does the CBN grade WBH20 compare to carbide for hard turning?
WBH20 (CBN) offers substantially higher thermal and abrasion resistance than carbide in hardened material applications, yielding longer tool life and more consistent dimensional control for hard turning operations.

What is the geometry and how does it affect cutting?
The triangular 60° form with a 0.8 mm corner radius and negative 0° rake provides a sturdy edge suited to high cutting loads and intermittent cuts, improving edge stability and reducing chipping.

Is this insert compatible with standard TNGA toolholders?
The designation TNGA160408TM‑3 indicates the standardised insert geometry for matching TNGA toolholders; compatibility with the corresponding Walter toolholder family is expected.

Can this insert be used for finishing passes?
Yes; due to the stable edge and CBN wear resistance, the insert can maintain surface quality in finishing and semi‑finishing passes on hardened steels.

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

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