RNGN120400TM-S WBK30 WBK30 Wendeplatten - Walter Tools

Take advantage of the combination of a CBN cutting grade (WBK30), a 0° negative rake and a compact round geometry to ensure stable, wear-resistant turning of hardened components. Order the RNGN120400TM-S WBK30 directly via Metav Werkzeuge or contact the consultants for an application check.

RNGN120400TM-S WBK30 indexable turning insert – CBN grade for hardened steels | Walter Tools

The RNGN120400TM-S WBK30 is an indexable turning insert developed for demanding, high-wear machining tasks on hardened steels and similar alloys, offering a round profile for profiling and shoulder operations.

• CBN grade WBK30 for hardened materials
• Negative rake 0° for stable cutting
• Round insert, ø12 mm, 0.4 mm thickness
• Chipbreaker S for consistent chip control

Consistent performance for hardened workpieces

The CBN-based WBK30 grade is engineered for applications where conventional carbides wear rapidly. As a superhard cutting material, CBN sustains sharpness under high contact temperatures and abrasive conditions, enabling longer tool life and reduced indexing frequency. This makes the insert particularly suitable for repeated runs on hardened steels and certain high-temperature alloys, where consistent dimensional results are required.

Stable cutting geometry that reduces process variation

A 0° negative rake produces a robust cutting edge and lowers the risk of chipping during interrupted cuts. The round plate geometry provides predictable engagement across a range of angles and supports smooth load distribution, which contributes to lower vibration and improved surface integrity on turned parts. For shops seeking reproducible outcomes, the combination of negative rake and round shape reduces scrap and rework.

Reliable chip control with dedicated breaker design

The chipbreaker S is optimised to form manageable chips under heavy wear conditions; it supports continuous evacuation and prevents entanglement on long cuts. Controlled chip formation not only improves operator safety but also protects the workpiece surface and downstream equipment. When paired with appropriate cutting parameters, the chipbreaker enhances throughput by maintaining stable cutting forces over extended cycles.

Compact dimensions for versatile turning operations

The insert’s round profile with a nominal 12 size and a plate thickness indicated as 04 suits profiling, light shoulder cuts and finishing passes where a small contact radius is advantageous. The combination of a small corner radius and a zero corner value allows close radiusing and detail work without compromising edge stability. This geometry supports flexible tool setups across different turret stations.

Material guidance and application note

CBN grades are specialised: suitability for specific materials such as certain cast irons, superalloys or alloyed steels should be verified against the product matrix provided by the manufacturer. The grade in this insert emphasises high wear resistance and process reliability, but final cutting data must be selected according to component hardness and machine capability to achieve optimal results.

For machining tasks that demand long tool life on hardened steels, contact Metav Werkzeuge to discuss the Walter Tools RNGN120400TM-S WBK30 insert and to arrange a tailored application review; eMail info@metav-werkzeuge.com or call +49 2822 7131930 for consultancy and ordering options

Technical data

• SKU: RNGN120400TM-S-WBK30-WALTER
• Designation: RNGN120400TM-S WBK30
• Product type: Drehwendeschneidplatte / indexable turning insert
• Manufacturer: Walter Tools

Core data

• Size: 12
• Thickness: 04
• Free rake: 0° (negativ)
• Corner radius: 0
• Tolerance class: G

Special features

• Cutting grade: WBK30 (CBN)
• Plate shape: Round
• Chipbreaker: S
• Series: Walter Schneidstoffsorte - Serie offen
• Sorteneinsatz note: suitability must be checked with product matrix

FAQ

What materials is this CBN grade optimised for? The WBK30 CBN grade is optimised for hardened steels and other high-wear materials; suitability for specific alloys should be confirmed using the product matrix for the RNGN120400TM-S WBK30 insert.

How does the 0° negative rake affect cutting stability? A 0° negative rake increases edge strength and reduces chipping risk; the RNGN120400TM-S geometry therefore provides more stable cutting in interrupted or heavy engagement operations.

Is the round insert suitable for profiling and finishing? Yes, the round profile and small corner radius enable close radiusing and versatile profiling, while maintaining a robust cutting edge for finishing passes.

What benefit does the chipbreaker S provide? The chipbreaker S promotes consistent chip formation and evacuation under high-wear conditions, improving process reliability and protecting surface finish during longer cycles.

Where can cutting data and application support be obtained? Cutting data and application guidance are available from Metav Werkzeuge; the product matrix and manufacturer recommendations should be consulted before finalising machining parameters.

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