CCMT09T304-RK4 WKK20S RK4 Wendeplatten - Walter Tools

Take advantage of the combination of high process reliability, cast iron-optimised grade and a consistent chip control that reduces rework and extends tool life. Order the insert directly via Metav Werkzeuge or consult our specialists for application-specific advice.

CCMT09T304-RK4 WKK20S indexable turning insert – Tiger-tec Silver, RK4 chipbreaker by Walter Tools

The CCMT09T304-RK4 WKK20S is a coated carbide turning insert designed for productive cast iron machining with stable chip formation and long tool life

• Optimised for cast iron machining
• Tiger-tec Silver coated carbide grade
• RK4 chipbreaker for short, controlled chips
• Rhombus 80° geometry for versatile turning

Consistent results on abrasive cast iron components

The Tiger-tec Silver coating combined with the WKK20S grade is formulated to resist the abrasive wear typical of cast iron. This results in a clearly extended tool life and a more predictable wear pattern, which benefits batch production and tight-tolerance runs. The RK4 chipbreaker is tailored for the short, brittle chips produced by grey and nodular cast iron, reducing the risk of chip entanglement and improving surface integrity. In practical terms, these characteristics mean fewer interruptions for tool changes and a more stable process window, which supports higher throughput and consistent surface finish on critical diameters.

Geometry and edge specification for accurate finishing

The Rhombus 80° insert form and the 7° clearance angle combine to offer a reliable cutting geometry for general turning and finishing operations. The small 0.4 mm corner radius supports fine edge finishes and modest approach depths while preserving edge strength for repeatable results. With a compact T3 thickness and the established CCMT09T304-RK4 outline, the insert suits standard tool holders and clamping systems used in lathes and turning centres, enabling straightforward retrofit into existing tool inventories. The designation reflects a balance between robustness and the ability to achieve close tolerances on components where form and surface quality are decisive.

Operational advantages: process safety and inventory efficiency

Specifying a grade optimised for cast iron machining reduces scrap and rework. The WKK20S carbide offers a universal toughness level that copes with fluctuating cast iron microstructures while the coating minimises adhesion and flank wear. The tolerance class M ensures consistent dimensions between indexable edges, aiding rapid re-indexing and predictable cycle times. For purchasing and stock management, the standardised form factor and compatibility with widely used holders simplify logistics and reduce downtime. Overall, the insert supports a cost-effective machining strategy through lower tooling consumption per part and a reliable, repeatable cutting performance.

Select the Walter Tools Tiger-tec Silver grade for demanding cast iron turning — contact Metav Werkzeuge for tailored recommendations and immediate availability at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: CCMT09T304-RK4-WKK20S-WALTER
• Designation: CCMT09T304-RK4 WKK20S
• Series: Tiger-tec Silver
• Grade: WKK20S
• Manufacturer: Walter Tools

Facts

• Plate form: Rhombus 80°
• Plate size: 09
• Plate thickness: T3
• Corner radius: 0.4 mm
• Free angle: 7°
• Chipbreaker: RK4
• Tolerance class: M

Special features

• Coated carbide grade optimised for cast iron
• Stable chip formation for short, breaking chips
• Productive wear resistance and consistent edge life
• Suitable for turning and boring applications on cast iron

FAQ

What materials is this insert suitable for? The CCMT09T304-RK4 WKK20S insert is optimised for machining cast iron; the WKK20S grade and chipbreaker geometry are tuned to abrasive, short-chip behaviour typical of these materials.

How does the RK4 chipbreaker improve machining? The RK4 chipbreaker controls chip form for short, easily managed chips in cast iron turning, reducing chip-related interruptions and improving surface quality with consistent cutting forces.

Can this insert be used for finishing operations? Yes, the small 0.4 mm corner radius and Rhombus 80° geometry make the insert suitable for light finishing cuts where surface integrity and dimensional accuracy are required.

Is the CCMT09T304-RK4 compatible with standard tool holders? The CCMT-shaped insert and standard size designation mean it fits most conventional tool holders for indexable turning, allowing easy replacement and inventory harmonisation.

What process benefits does the Tiger-tec Silver coating provide? The Tiger-tec Silver coating enhances wear resistance and reduces built-up edge tendencies on cast iron, delivering longer tool life and more predictable performance in production environments.

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

Walter Tools: The Walter AG (brand: Walter Tools) is part of the Sandvik Group and is a leading manufacturer of precision metalworking tools. Protected trademarks and product names are the property of their respective owners. The mentioned brand names are used for explanation only. There is no affiliation between Metav Werkzeuge and the named manufacturers. The offered item is original, factory-new goods of the manufacturer.