CNMA190616-RK7 WKK10S Wendeplatten - Walter Tools

Efficient machining of cast iron is achieved by the combination of the Tiger‑tec Silver coating and the RK7 chipbreaker, delivering stable chip formation and extended tool life; order the insert directly via Metav Werkzeuge or consult our advisers for application-specific cutting data.

CNMA190616-RK7 WKK10S indexable turning insert — Tiger‑tec Silver grade, for cast iron, Walter Tools

The CNMA190616-RK7 WKK10S is a rhombic 80° indexable turning insert in the Tiger‑tec Silver series, configured for robust, repeatable performance in cast-iron turning operations

• Tiger‑tec Silver coating for wear resistance
• RK7 chipbreaker for controlled chip formation
• Rhombic 80° geometry for versatile turning
• 1.6 mm corner radius for robust cutting edge

Durable coating for abrasive cast-iron work

The Tiger‑tec Silver coating combined with the WKK10S grade represents a coated carbide solution tuned specifically for cast-iron applications. This composition targets the predominantly abrasive wear mechanisms encountered when machining grey and nodular cast irons, delivering wear resistance that supports longer tool life and fewer insert changes. The result is a measurable improvement in process stability, with fewer unplanned interruptions and more predictable tool-change intervals.

Consistent chip control and edge stability

The RK7 chipbreaker is designed to generate short, controllable chips typical for cast-iron cutting conditions, aiding swarf evacuation and reducing the risk of entanglement. The insert’s negative relief at 0° provides a robust cutting geometry that tolerates interrupted cuts and heavy engagement, helping to maintain the integrity of the cutting edge under tough conditions. Together, chip control and edge strength contribute directly to improved surface finish consistency and safer chip handling in production environments.

Geometry and dimensions for flexible turning strategies

The rhombic 80° form and the inscribed size of 19 with a plate thickness 06 make this insert suitable for a wide range of turning set-ups, from general-purpose turning to more demanding roughing passes. The 1.6 mm corner radius increases edge robustness and allows higher cutting depths where required without compromising component tolerances. These dimensional choices balance rigidity and accessibility, enabling stable cutting in both manual and CNC lathe operations.

Application range and productivity benefits

Engineered for the ISO group K (cast iron), this insert covers both wear-resistant and more ductile cast-iron grades, reflecting the grade’s intended use across varied cast components. By combining a modern coating system with an industrial chipbreaker geometry, the insert supports higher machining productivity through extended interval life and reduced downtime for insert changes. Used in standard turning cycles, the component helps maintain consistent results and reduces process variability over extended production runs.

Contact Metav Werkzeuge for application advice on Walter Tools CNMA190616-RK10S CNMA190616-RK7 WKK10S or to request cutting data and availability

Technical data

• SKU: CNMA190616-RK7-WKK10S-WALTER
• Article designation: CNMA190616-RK7 WKK10S
• Manufacturer: Walter Tools

Key figures

• Inscribed circle / size: 19
• Plate thickness: 06
• Corner radius: 1.6 mm
• Relief angle: 0° (negative)
• Plate form: Rhombus 80°
• Tolerance class: M

Special features

• Series: Tiger‑tec Silver
• Grade: WKK10S
• Chipbreaker: RK7
• Material group suitability: cast iron (K)
• Execution: A

FAQ

Which materials is this insert suitable for?
The CNMA190616-RK7 WKK10S insert from Walter Tools is optimised for machining cast iron (ISO group K), addressing both abrasive and more ductile cast-iron grades.

What are the main geometry benefits of this insert?
The rhombic 80° form and 1.6 mm corner radius provide a combination of accessibility and edge strength, making the insert suitable for general turning and heavier engagements.

How does the RK7 chipbreaker affect machining performance?
The RK7 chipbreaker promotes short, controllable chips and reliable evacuation when turning cast iron, improving process safety and surface consistency.

Is the grade suitable for continuous production?
Yes, the Tiger‑tec Silver coating and the WKK10S grade offer enhanced wear resistance for extended tool life, supporting continuous production cycles with fewer insert changes.

Can this insert withstand interrupted cuts?
The 0° negative relief and the robust edge geometry increase resistance to chipping, making the insert appropriate for operations that include interrupted cuts.

Manufacturer/Responsible: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen, Germany; The Walter AG (brand presentation: Walter Tools) is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik Group. Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only. There is no connection between our company and the named brands. The offered article is an original, brand-new item from the manufacturer.