WNMA100616-RK5 WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of high wear resistance, a controlled RK5 chipbreaker and the stable Trigon 80° geometry for reliable cast iron turning; order the WNMA100616-RK5 WKK20S via Metav Werkzeuge or consult the technical advisers for process integration.

WNMA100616-RK5 WKK20S — Trigon 80° turning insert with RK5 chipbreaker by Walter Tools

WNMA100616-RK5 WKK20S is a Trigon 80° turning insert designed for efficient machining of cast iron components in production and batch turning applications

• Trigon 80° geometry for stable cutting
• RK5 chipbreaker for controlled chip formation
• Tiger‑tec Silver coating for wear resistance
• Suitable for cast iron machining (ISO group K)

Reliable performance for abrasive cast iron work

The combination of the WKK20S grade within the Tiger‑tec Silver family and the dedicated RK5 chipbreaker delivers a wear‑resistant cutting edge well suited to the short, often brittle chips typical of cast iron. The coated carbide formulation is optimised to resist abrasive wear and to maintain a consistent edge over longer cycle times, which reduces index changes and tool consumption. In practice, this means fewer interruptions for insert changes and a steadier surface finish across series production, supporting overall process stability and predictable tool cost per part.

Geometry that promotes stability and repeatability

The Trigon 80° plate form together with a 0° (negative) relief angle provides a geometry that resists edge chipping under interrupted cuts and heavy engagement. A corner radius of 1.6 mm balances edge strength and achievable surface finish, making the insert suitable for medium‑ to heavy‑duty turning operations where rigidity and repeatable dimensions are priorities. These geometric choices translate into improved vibration resistance and a reduced risk of thermal degradation at the cutting edge, both of which contribute to consistent component tolerances in automated turning centres.

Designed for productivity and process security

Tolerance class M and execution A indicate a production‑grade insert that fits typical clamping systems with consistent repeatability. The coated grade and chipbreaker combination supports higher metal removal rates while preserving edge life, so cycle times can be shortened without sacrificing reproducibility. As a result, the insert aids in achieving a favourable cost‑per‑part calculation in medium‑volume manufacturing, while the standardised geometry simplifies tool management and spare stock planning across machining cells.

Practical application notes for material selection

This insert is expressly tuned for ISO group K materials; it handles the abrasive nature of grey and nodular cast irons by generating short, breakable chips and by providing a robust edge that tolerates the variable inclusions often found in cast materials. For finishing passes where a finer surface is required, the corner radius and Trigon profile allow controlled cut engagements; for more aggressive roughing, the RK5 chipbreaker maintains chip control and helps avoid chip tangling. The WNMA100616‑RK5 WKK20S complements machining strategies that prioritise throughput and repeatable quality in cast iron components.

Contact Metav Werkzeuge for application advice or to request the WNMA100616‑RK5 WKK20S from Walter Tools; technical consultants are available via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: WNMA100616-RK5-WKK20S-WALTER
• Label: Turning insert WNMA100616-RK5 WKK20S Walter Tools
• Product type: Turning insert
• Brand: Walter Tools
• Series: Tiger‑tec Silver
• Grade: WKK20S

Facts

• Geometry: Trigon 80°
• Relief angle: 0° (negative)
• Corner radius: 1.6 mm
• Inscribed circle / size: 10 mm
• Thickness: 06
• Tolerance class: M
• Execution: A

Special features

• Chipbreaker: RK5
• Coating technology: Tiger‑tec Silver
• Grade composition: Coated carbide (WKK20S)
• Material application: Suitable for cast iron (ISO group K)
• Designed for short, brittle chip formation in cast materials

FAQ

What materials is this insert suitable for?
The WNMA100616‑RK5 WKK20S is formulated for ISO group K materials and is especially suitable for machining cast iron, where the Tiger‑tec Silver coating and RK5 chipbreaker manage abrasive wear and chip control.

How does the RK5 chipbreaker affect machining?
The RK5 chipbreaker on this Trigon insert promotes short, consistent chips and improves process security during interrupted or heavy cuts, reducing the risk of chip tangling and protecting the cutting edge.

Can this insert be used for finishing and roughing?
Yes; the 1.6 mm corner radius and Trigon 80° geometry provide a compromise between strength for roughing and the ability to achieve a good surface finish in finishing passes when cutting parameters are adjusted.

What is the exact product reference for ordering?
Order reference: WNMA100616‑RK5 WKK20S (Walter Tools). Use this SKU to ensure the correct grade, chipbreaker and geometry are supplied.

Is this grade compatible with high‑speed turning?
The WKK20S grade is optimised for cast iron applications and supports productive cutting conditions; recommended cutting parameters should be checked against machine capability and the specific cast material to determine high‑speed suitability.

The Walter AG (brand: Walter Tools), headquartered 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 remain the property of their respective owners and are mentioned here for explanatory purposes only. There is no affiliation between Metav Werkzeuge and the mentioned brands beyond the distribution of original, factory‑new products.

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