CNMA190624-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the proven combination of a Tiger·tec Silver coated carbide grade and an RK5 chipbreaker for consistently productive cast iron turning; order directly through Metav Werkzeuge or consult their technical team for application advice.

CNMA190624-RK5 WKK20S indexable turning insert for cast iron – Walter Tools (Rhombic 80°, 2.4 mm corner radius)

The CNMA190624-RK5 WKK20S is an indexable turning insert tailored for cast iron machining, offering a robust coated carbide grade and a specialised chip control geometry for stable production turning.

• Tiger·tec Silver coated carbide grade
• Optimised RK5 chipbreaker for cast iron
• Rhombic 80° geometry, 2.4 mm corner radius
• Negative 0° rake for stable turning

Consistent productivity through coating and chip control

The coated carbide grade Tiger·tec Silver in combination with the WKK20S specification is engineered for the abrasive wear typical of cast iron. This material pairing reduces flank wear rates and extends the number of effective indexings, translating into longer periods between insert changes and less downtime. The integrated RK5 chipbreaker controls short, brittle chips common with cast iron, improving evacuation and raising process reliability. For production environments, this means improved component throughput and a more predictable tool-life curve.

Rigidity and surface quality from geometry and negative rake

The rhombic 80° shape together with a 2.4 mm corner radius increases cutting edge strength and contact area, which supports heavier feeds and secure engagement in interrupted cuts. The negative 0° rake geometry further enhances edge robustness, making the insert particularly suitable where stability under load is essential. These geometric choices result in repeatable surface finishes and reduced vibration, giving a measurable improvement in machining quality for turned cast iron components.

Integration benefits and economical handling

Delivered in the CNMA190624-RK5 format, the insert complies with common toolholder standards and the tolerance class M specification, facilitating straightforward tool changeover and interchangeability. The plate thickness and shape are optimised to balance edge strength with accessibility in tight pockets. By standardising on a coated grade and a proven chipbreaker, workshops can reduce inventory complexity while maintaining high process security. For additional machining parameters or holder compatibility, Metav Werkzeuge provides technical data sheets and application guidance.

Contact Metav Werkzeuge to discuss how the CNMA190624-RK5 WKK20S can enhance cast iron turning performance; call +49 2822 7131930 or email info@metav-werkzeuge.com

Technical Data

• Article number: CNMA190624-RK5-WKK20S-WALTER
• Manufacturer: Walter Tools
• Product type: Drehwendeschneidplatte
• Series: Tiger-tec Silver
• Grade: WKK20S
• ISO designation: CNMA190624-RK5 WKK20S

Facts

• Corner radius: 2.4
• Plate size: 19
• Plate thickness: 06
• Free angle: 0° (negative)
• Tolerance class: M

Special features

• RK5 chipbreaker
• Coating: Tiger·tec Silver
• Material application: cast iron
• Plate form: Rhombus 80°
• Execution: A

FAQ

Which materials is this insert intended for?
The CNMA190624-RK5 WKK20S is optimised for machining cast iron, with the WKK20S grade tailored to handle abrasive wear and short, breaking chips.

What chip control does the insert provide?
This insert uses the RK5 chipbreaker, designed to produce short chips and reliable evacuation when turning cast iron.

What are the key geometric characteristics affecting performance?
The insert features a rhombic 80° form, a 2.4 mm corner radius and a negative 0° free angle for increased edge strength and stability.

Which coating and grade are used on the insert?
The cutting grade is a coated carbide from the Tiger·tec Silver family, specified as WKK20S for robust performance in cast iron.

Is the CNMA190624-RK5 compatible with standard toolholders?
The CNMA190624-RK5 designation matches common holder interfaces for this insert family; confirm holder compatibility against the ISO designation before assembly.

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

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