WCMT06T308-RK4 WKK20S RK4 Wendeplatten - Walter Tools

Benefit from the combination of the Tiger·tec Silver coating, optimised chip control and robust Trigon geometry to achieve consistent results when machining cast iron; Order the WCMT06T308-RK4 WKK20S directly via Metav Werkzeuge or ask our consultants if needed.

WCMT06T308-RK4 WKK20S — Trigon 80° Turning/Boring Insert, Tiger·tec Silver (Walter Tools)

The WCMT06T308-RK4 WKK20S is a trigon indexable insert engineered for precision boring and turning in cast iron applications, combining a coated cemented carbide grade with a purpose-built chipbreaker for short, manageable swarf.

• Tiger·tec Silver coating for longer life
• Optimised for cast iron machining
• Trigon 80° geometry for stability
• 0.8 mm corner radius for durable edges

High-efficiency machining of cast iron components

The Tiger·tec Silver grade delivers a balance between wear resistance and toughness, which translates into longer tool life and fewer insert changes during production. Designed specifically for machining cast iron, the grade and coating address the abrasive wear and the often short, breaking chips typical of these materials. By relying on a coated cemented carbide grade, process planners can expect improved consistency in batch production and reduced downtime related to tooling, supporting a more economical machining cycle.

Geometry that improves process stability and surface quality

The Trigon 80° form and the 7° relief angle create a stable cutting geometry that resists chatter and allows secure clamping in toolholders for boring and turning operations. The 0.8 mm corner radius supports a stronger cutting edge that tolerates intermittent cuts and interrupted surfaces often encountered in cast components. Together with the RK4 chipbreaker, this geometry promotes optimised chip control, reducing the risk of recutting and helping to maintain surface integrity on the workpiece.

Practical selection and application advantages

Specifying the WKK20S grade within the Tiger·tec Silver family means a grade tuned to the demands of cast iron: abrasion-resistant yet not overly brittle. The RK4 chipbreaker is configured for the typical segmentation of cast iron swarf, making it easier to handle chips and maintain coolant flow. For manufacturing lines seeking repeatable performance, the combination of a robust grade, targeted chipbreaker and Trigon form supports process reliability and predictable tool-change intervals, which in turn facilitates planning for productivity and cost-efficiency.

For application guidance or to request a recommendation for specific cast iron operations with Walter Tools inserts, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for rapid technical support

Technical data

• Article number: WCMT06T308-RK4-WKK20S-WALTER
• Designation: WCMT06T308-RK4 WKK20S
• Manufacturer: Walter Tools

Facts

• Relief angle: 7°
• Corner radius: 0.8 mm
• Insert size: 06
• Plate thickness: T3
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK20S (coated cemented carbide)
• Chipbreaker: RK4
• Geometry: Trigon 80°
• Application: Cast iron (K)

FAQ

What materials is this insert designed for?
The WCMT06T308-RK4 WKK20S is intended primarily for cast iron machining and is optimised for the abrasive wear and chip forms common to that material group.

How does the RK4 chipbreaker affect performance?
The RK4 chipbreaker is designed to produce short, breaking chips in cast iron, improving chip evacuation and reducing the risk of recutting in interrupted or unstable cuts.

What are the key geometry features to consider when selecting a toolholder?
Select a toolholder that supports Trigon 80° inserts and secures the insert firmly to exploit the 7° relief angle and 0.8 mm corner radius for process stability and improved surface quality.

Is the WKK20S grade part of a larger product family?
Yes, the grade belongs to the Tiger·tec Silver series, offering a coated cemented carbide solution aimed at balancing wear resistance and toughness for cast iron applications.

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

Protected trademarks and trade names remain the property of their respective owners. Brand names and protected product designations are mentioned for clarification only and do not imply any affiliation between our company and the named brands. The offered item is an original, factory-new product from the manufacturer (Walter Tools).