WNMA080412-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Benefit from a robust combination of Tiger·tec Silver coating and the RK5 chipbreaker tailored for abrasive cast iron. The result is predictable tool life and stable chip formation that supports uninterrupted production. Order the insert directly via Metav Werkzeuge or consult their team for optimum grade selection and process parameters.

WNMA080412-RK5 WKK20S — Indexable turning insert, Tiger·tec Silver coating, for cast iron | Walter Tools

The WNMA080412-RK5 WKK20S is an indexable trigon insert designed for efficient machining of cast iron components in demanding production environments.

• Tiger·tec Silver coating for improved wear resistance
• RK5 chipbreaker optimised for cast iron machining
• Trigon 80° form with 1.2 mm corner radius

Increased process reliability for abrasive cast iron work

The combination of the Tiger·tec Silver coating and the WKK20S grade delivers a clear benefit where abrasive wear is the main challenge. The coated carbide substrate provides a hardened contact surface that resists flank and crater wear, which translates into longer in‑service intervals and fewer tool changes. With the RK5 chipformer tuned for cast iron, the insert promotes stable chip formation, reducing the risk of unexpected interruptions and helping to maintain consistent cycle times.

Robust geometry for secure cutting and consistent finishes

The trigon 80° form and 1.2 mm corner radius offer a balance between edge strength and geometric versatility. The 0° (negative) relief geometry contributes to a more robust cutting edge, which is advantageous under intermittent cut conditions typical of many cast iron components. This geometry supports predictable surface quality and repeatable outcomes in series production, enabling process planners to rely on consistent part tolerances without frequent tool adjustments.

Easy specification and integration into production tooling

The insert follows the standard ISO designation and a compact size code for straightforward machine compatibility. As a coated carbide indexable insert with the RK5 chipbreaker, it is suitable where short, breaking chips and abrasive wear dominate the machining process. Documentation of grade and series simplifies tool management: recorded as part of the Tiger·tec Silver family and identified by the WNMA080412-RK5 WKK20S label, the component can be aligned with existing holder inventories and tool‑management systems for fast replacement and traceability.

Contact Metav Werkzeuge for tailored Walter Tools Tiger·tec Silver insert recommendations and to secure the right WNMA080412-RK5 WKK20S solution for cast iron production

Technical Data

• SKU: WNMA080412-RK5-WKK20S-WALTER
• Label: Drehwendeschneidplatte WNMA080412-RK5 WKK20S Walter Tools
• Manufacturer: Walter Tools
• Product type: Indexable turning insert
• Series: Tiger-tec Silver
• Grade: WKK20S
• Chipbreaker: RK5

Facts

• Insert form: Trigon 80°
• Corner radius: 1.2 mm
• Relief angle: 0° (negative)
• Size code: 08
• Thickness code: 04
• Tolerance class: M
• Execution: A

Special features

• Coated carbide (Tiger·tec Silver)
• Optimised for cast iron (ISO group K)
• Designed for abrasive wear and breaking chips
• Stable chip formation and predictable tool life
• Robust edge geometry for interrupted cuts

FAQ

What materials is this insert suitable for?
The WNMA080412-RK5 WKK20S is specified for cast iron (ISO group K); the WKK20S grade and Tiger·tec Silver coating are optimised for abrasive cast materials.

How does the RK5 chipbreaker affect performance?
The RK5 chipbreaker is engineered to produce short, controlled chips in cast iron, improving evacuation and reducing the likelihood of chip entanglement during turning operations.

Can this insert be used for stainless steel or aluminium?
The insert is formulated for cast iron applications; alternative grades and chipformers should be selected for stainless steel or aluminium to achieve optimal wear behaviour and surface finish.

What does the 0° (negative) relief mean in practice?
The 0° (negative) relief provides a stronger cutting edge for heavy or interrupted cuts, enhancing edge stability under mechanical stress typical of cast iron machining.

How is the geometry identified for tool setup?
The trigon 80° form, 1.2 mm corner radius and the ISO-style designation WNMA080412-RK5 give clear indexable insert geometry for correct clamping and toolholder selection.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only and do not imply any affiliation with our company. The offered item is original, brand-new merchandise from the manufacturer.