CNMA190616-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver coating, a robust RK5 chipbreaker and the rhombic 80° geometry for reliable, productive cast‑iron machining; order the insert via Metav Werkzeuge or consult their specialists for application support.

CNMA190616-RK5 WKK20S — indexable turning insert for cast iron, Tiger‑tec Silver | Walter Tools

The CNMA190616-RK5 WKK20S is an indexable turning insert engineered for efficient machining of cast‑iron components in general turning applications.

• Tiger‑tec Silver coated grade WKK20S
• Optimised RK5 chipbreaker for cast iron
• 0° negative rake for stable cutting
• Rhombic 80° form with 1.6 mm corner radius

Longer tool life and consistent performance for cast‑iron turning

The combination of the Tiger‑tec Silver coating and the WKK20S grade delivers a coated‑carbide surface optimised for the abrasive wear typical of cast‑iron machining. This grade is tuned to cope with short, breaking chips and high abrasion, which reduces flank wear and extends tool life. The result is a more predictable process with fewer tool changes and improved machine uptime, making the insert a cost‑effective choice for series production where repeatable performance matters.

Geometry and chip control that improve productivity

The rhombic 80° shape and 0° negative rake create a sturdy cutting edge that resists mechanical shock and vibration during heavy interrupted cuts. The RK5 chipbreaker has been designed specifically for cast‑iron applications to promote controlled chip formation and evacuation, reducing the risk of chip entanglement and workpiece damage. The 1.6 mm corner radius balances edge strength with surface finish, enabling stable feeds and reliable component tolerances across a range of turning tasks.

Process security, ease of use and brand reliability

Built to Walter Tools standards, this indexable insert supports consistent cutting results in abrasive cast‑iron environments and simplifies tooling logistics by matching common ISO insert designations. The insert is available in the CNMA190616-RK5 designation and fits standard toolholders for rhombic 80° inserts. For operators seeking stable metal removal and lower tooling costs per part, the insert offers a pragmatic combination of wear resistance and chip control, backed by a manufacturer with a strong reputation in precision tooling.

Contact Metav Werkzeuge today to discuss optimal cutting parameters for cast‑iron applications or to request a tailored quotation for the CNMA190616-RK5 WKK20S indexable insert

Technical data

• Article number: CNMA190616-RK5-WKK20S-WALTER
• Designation: CNMA190616-RK5 WKK20S
• Series: Tiger‑tec Silver
• Grade: WKK20S
• Manufacturer: Walter Tools

Facts

• Insert size: 19
• Thickness: 06
• Shape: Rhombus 80°
• Corner radius: 1.6 mm
• Rake angle: 0° negative
• Chipbreaker: RK5
• Applicable material group: cast iron (K)

Special features

• Coated carbide grade optimised for abrasive wear
• Designed for short, breaking chips typical of cast iron
• Robust geometry for interrupted cuts
• Fits ISO CNMA toolholder systems
• Walter Tools quality and production standards

FAQ

What materials is this insert suitable for?
The CNMA190616-RK5 WKK20S insert is optimised for machining cast iron; the WKK20S grade and the RK5 chipbreaker address abrasive wear and short chip forms typical of cast‑iron workpieces.

What are the key geometric properties of the insert?
The insert features a rhombic 80° form, a 1.6 mm corner radius and a 0° negative rake, providing a stable cutting edge and good versatility for general turning.

Which chipbreaker is used and why?
The RK5 chipbreaker is specified for controlled chip formation in cast‑iron machining, improving chip evacuation and reducing the risk of workpiece damage.

Is the insert coated and what benefits does the coating bring?
Yes, it uses the Tiger‑tec Silver coating technology on a coated‑carbide substrate, which enhances resistance to abrasive wear and contributes to longer tool life in demanding cast‑iron operations.

What designation should be referenced when ordering replacement inserts?
Order using the ISO designation CNMA190616-RK5 WKK20S or the SKU CNMA190616-RK5-WKK20S-WALTER to ensure the correct grade and chipbreaker are supplied.

Manufacturer: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen, Germany

Protected trademarks and trade names remain the property of their respective owners. Brand names and protected trade names are mentioned solely for explanatory purposes. There is no connection between our company and the mentioned brands. The offered article is original, factory‑new goods from the manufacturer (Walter Tools).