CNMA120408-RK7 WKK10S Wendeplatten - Walter Tools

Take advantage of the WKK10S grade together with the Tiger·tec Silver coating and the RK7 chipbreaker for consistent chip control and extended edge life when machining cast iron; the rhombic 80° geometry and 0.8 mm corner radius help to maintain surface quality and reduce tool changes. Order or request application advice directly via Metav Werkzeuge for reliable integration into production.

CNMA120408-RK7 WKK10S — Indexable turning insert, Tiger·tec Silver for cast iron (Walter Tools)

The CNMA120408-RK7 WKK10S is a rhombic 80° indexable turning insert engineered for productive machining of cast iron, combining a wear-resistant coated grade with an RK7 chipbreaker for predictable chip formation.

• Tiger·tec Silver coated grade WKK10S
• RK7 chipbreaker for controlled chips
• Rhombic 80° geometry for versatile cuts
• 0.8 mm corner radius for robust edge

Maximise life in abrasive cast iron operations

The combination of the WKK10S grade and the Tiger·tec Silver coating targets the typical abrasive wear and the frequently short, brittle chips encountered when machining cast iron. This coated carbide composition offers improved abrasion resistance, extending edge life and reducing interruptions for tool changes. For production environments where uptime and predictable tool performance matter, the coated grade helps to keep cycle times stable and tooling costs more predictable.

Confident chip control and stable cutting performance

The dedicated RK7 chipbreaker is shaped to break and evacuate the short chips produced from iron materials, improving process reliability and reducing the risk of chip entanglement. The rhombic 80° geometry provides a versatile approach angle that supports a wide range of turning tasks, from shoulder work to general turning. The negative 0° relief geometry strengthens the cutting edge, making the insert especially suitable for heavy cuts and interrupted cut conditions in cast iron workpieces.

Robust edge geometry that balances strength and finish

With an inscribed circle 12 mm and a thickness 4 mm, the insert offers a compact footprint while delivering a stable cutting platform. The 0.8 mm corner radius provides an effective compromise between edge resilience and surface finish, permitting both productive roughing and acceptable medium finishing without immediate edge failure. Classified to tolerance M, the insert supports repeatable seating and consistent results in toolholders calibrated to standard insert dimensions.

Contact Metav Werkzeuge for tailored application advice and stock information on Walter Tools Tiger·tec Silver WKK10S inserts: info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• Article number: CNMA120408-RK7-WKK10S-WALTER
• SKU / label: CNMA120408-RK7 WKK10S Walter Tools
• Product type: Indexable turning insert
• Series: Tiger·tec Silver
• Manufacturer: Walter Tools

Core dimensions

• Inscribed circle: 12 mm
• Thickness: 4 mm
• Corner radius: 0.8 mm
• Relief / clearance: 0° (negative)
• Tolerance class: M

Features & applications

• Coating: Tiger·tec Silver
• Grade: WKK10S (coated carbide)
• Chipbreaker: RK7
• Shape: Rhombus 80°
• Application group: Cast iron (ISO group K)
• Execution: A
• ISO designation: CNMA120408-RK7 WKK10S

FAQ

What materials is this insert suitable for?
This insert is optimised for cast iron (ISO group K); the WKK10S grade and Tiger·tec Silver coating are tailored to resist abrasive wear typical of cast materials.

How does the RK7 chipbreaker improve machining?
The RK7 chipbreaker promotes short, easily controlled chips when turning cast iron, enhancing evacuation and reducing the risk of chip-related surface marks or machine stoppages.

What are the key dimensions of the insert?
The insert has an inscribed circle of 12 mm, a thickness of 4 mm and a corner radius of 0.8 mm, providing a compact, rigid cutting edge for demanding operations.

Is the geometry suitable for roughing or finishing?
The negative 0° relief and 0.8 mm corner radius make the insert well suited to heavy roughing and medium finishing in cast iron applications, offering a balance of edge strength and surface quality.

Who manufactures this insert and how is it identified?
The insert is produced by Walter Tools and is identified as CNMA120408-RK7 WKK10S (SKU CNMA120408-RK7-WKK10S-WALTER).

Manufacturer/Responsible: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany
Protected trademarks and trade names belong to their respective owners. Brand names are mentioned for descriptive purposes only and do not imply any affiliation. The item offered is an original, factory-new product of the manufacturer.