WNMA060408-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Reliable wear resistance and optimised chip control deliver consistent performance in cast-iron turning; robust geometry and the Tiger·tec Silver grade reduce tool changes and downtime. Order the insert via Metav Werkzeuge or request application advice from our consultants.

WNMA060408-RK5 WKK20S indexable turning insert by Walter Tools — Tiger·tec Silver grade for cast iron, Trigon 80°

A precision indexable turning insert designed for cast-iron machining, the WNMA060408-RK5 WKK20S offers a combination of a resilient geometry and a specialist chipformer for reliable production turning.

• Tiger·tec Silver coating for long tool life
• Optimised RK5 chipformer for brittle chips
• Trigon 80° geometry for robust cutting
• 0.8 mm corner radius for enhanced edge strength

Greater uptime through hardened grade technology

The Tiger·tec Silver coating paired with the WKK20S grade is engineered to withstand the abrasive wear typical of cast-iron applications. This coated carbide formulation is aimed at maintaining a stable cutting edge under intermittent contact and high abrasion, so tool life is extended and tool-change intervals are reduced. The result is improved machine utilisation and lower process costs per component, which supports more predictable production planning.

Stable cutting with a dedicated chip control system

An RK5 chipformer and Trigon 80° shape offer mechanical strength and reliable chip breaking for the short, brittle chips produced when machining cast iron. The insert’s 0.8 mm corner radius increases edge robustness and resists premature chipping on interrupted cuts. The 0° (negative) free angle provides a geometrical advantage for heavy or interrupted turning, giving stable cutting forces and predictable tool behaviour in demanding operations.

Practical performance for workshop and production environments

As an indexable insert in the Tiger·tec Silver series, this trigon insert balances wear resistance with consistent surface finish and dimensional stability. The combination of geometry and grade supports higher cutting speeds and steady feed choices where abrasive cast-iron grades are common. Documentation and specification are straightforward, so integration into existing tool holders is uncomplicated and setup time is minimised, helping to keep throughput steady in serial and job-shop environments.

Contact Metav Werkzeuge for application-specific recommendations on Walter Tools Tiger·tec Silver inserts and to arrange a tailored machining assessment

Technical data

• Article number: WNMA060408-RK5-WKK20S-WALTER
• Designation: WNMA060408-RK5 WKK20S
• Product type: indexable turning insert
• Manufacturer: Walter Tools

Facts

• Geometry: Trigon 80°
• Corner radius: 0.8 mm
• Free angle: 0° (negative)
• Size: 06
• Thickness: 04
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK20S (coated carbide)
• Chipformer: RK5
• Suitable for: cast iron (ISO group K)
• Shape: Trigon 80°

FAQ

What materials is this insert designed for? This insert is designed primarily for machining cast iron; the WKK20S grade and Tiger·tec Silver technology are tuned for abrasive cast-iron conditions.

Which chipformer does the insert use and why is it important? The insert features the RK5 chipformer, which is optimised for the short, brittle chips typical of cast-iron machining and contributes to consistent chip evacuation.

Is the geometry suitable for interrupted cuts? Yes. The Trigon 80° shape with a 0° (negative) free angle and 0.8 mm corner radius provides the edge strength required for interrupted and heavy cutting conditions.

Can this insert be used on standard indexable turning holders? The insert follows common ISO designation and is intended for compatible holders; verification of seat and clamping specifications is recommended before installation.

What are the main benefits in production settings? The coated grade and robust geometry increase tool life and process reliability, leading to fewer tool changes, reduced downtime and better overall productivity.

Die Walter AG (brand presentation: Walter Tools) with headquarters in Tübingen is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Swedish Sandvik group. Protected trademarks and trade names are the property of their respective owners. Brand names and protected designations are used for explanatory purposes only. There is no affiliation between our company and the mentioned brands. The offered item is an original, factory-new product of the manufacturer.