WNMG080412-MW5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, a WKK20S wear grade tuned for cast iron and a robust Trigon 80° geometry to achieve productive, repeatable turning results; order directly via Metav Werkzeuge or contact the team for application advice.

WNMG080412-MW5 WKK20S — Turning insert, Tiger·tec Silver, for cast iron — Walter Tools

WNMG080412-MW5 WKK20S is a negative‑rake, trigon‑shaped turning insert designed for reliable machining of cast iron components

• Tiger·tec Silver coating for high wear resistance
• Optimised for cast iron machining
• Trigon 80° geometry for stable cuts
• 1.2 mm corner radius for robust cutting edge

Consistent chip control and longer tool life for cast iron production

The combination of the WKK20S grade and the Tiger·tec Silver coating targets the abrasive wear characteristics and short, brittle chips typical of cast iron. The insert’s micro‑structured coating reduces flank and crater wear, which translates into longer tool life and fewer interruptions on the shop floor. For production environments where cycle time and component quality are critical, this wear‑resistant formulation enables stable cutting parameters and predictable change intervals without compromising surface finish.

Geometry that stabilises cutting and reduces vibration

With its Trigon 80° form and a 1.2 mm corner radius, the insert offers a robust edge that tolerates interrupted cuts and tool deflection better than finer radii. The 0° negative rake provides a stronger cutting edge for heavy cuts and interrupted feed conditions, while the MW5 chipbreaker is configured to promote controlled chip fragmentation when machining grey and nodular cast irons. These design choices reduce chatter and enhance dimensional stability, supporting repeatable tolerances and fewer rework cycles.

Practical advantages in production and process reliability

The insert’s tolerance class M and execution G indicate consistent manufacturing quality and interchangeability in standard toolholders. The product is specifically matched to the K (cast iron) workpiece group, which simplifies grade selection for mixed‑material shops. Fewer tool changes and steadier productivity contribute to lower overall machining costs and better machine availability. For customers seeking process security, the insert’s predictable wear patterns and established grade technology minimise variation between batches.

For tailored advice on integrating this Walter Tools insert into existing toolpaths, or to request application data sheets and cutting parameter recommendations, contact Metav Werkzeuge — the team is ready to support selection and supply.

Technical Data

• Article number: WNMG080412-MW5-WKK20S-WALTER
• SKU: WNMG080412-MW5-WKK20S-WALTER
• Product type: Turning insert
• Series: Tiger·tec Silver
• Grade: WKK20S

Facts

• Size code: 08
• Thickness code: 04
• Corner radius: 1.2 mm
• Rake angle: 0° (negative)
• Geometry: Trigon 80°
• Chipbreaker: MW5

Special features

• Coating: Tiger·tec Silver
• Wear grade: WKK20S (coated carbide)
• Suitable workpiece group: cast iron (K)
• Tolerance class: M
• Execution: G
• Designed for abrasive wear resistance and short, breaking chips

FAQ

What materials is this insert intended for?
The WNMG080412-MW5 WKK20S insert is designed primarily for machining cast iron; the WKK20S grade is optimised for the abrasive wear and chip forms typical of cast materials.

What are the key geometry advantages of this insert?
The Trigon 80° shape and 1.2 mm corner radius provide a robust cutting edge and improved stability in interrupted cuts, while the 0° negative rake enhances edge strength for heavier machining.

Which chipbreaker does the insert use and why is it relevant?
This insert uses the MW5 chipbreaker, which promotes controlled chip fragmentation when turning cast iron, improving evacuation and reducing the risk of entanglement.

How does the Tiger·tec Silver coating affect performance?
The Tiger·tec Silver coating enhances wear resistance and heat tolerance, resulting in longer tool life and more consistent surface finish in abrasive turning operations.

What is the full product identifier for ordering or referencing?
Reference the article number WNMG080412-MW5-WKK20S-WALTER when ordering to ensure the correct Tiger·tec Silver WKK20S turning insert is supplied.

Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned for explanatory purposes only. There is no connection between our company and the mentioned brands. The offered article is original, factory‑new goods of the manufacturer (Walter Tools).

Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen