DNMA150608-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of durable Tiger‑tec Silver coating, RK5 chip control and robust edge geometry for reliable cast‑iron turning; order the insert directly via Metav Werkzeuge or request application advice from the consultants.

DNMA150608-RK5 WKK20S indexable turning insert, Tiger‑tec Silver, for cast iron — Walter Tools

The DNMA150608-RK5 WKK20S is an indexable turning insert developed for productive machining of cast iron components, combining a Tiger‑tec Silver coated grade with an RK5 chipbreaker for stable cutting.

Tiger‑tec Silver coating for extended tool life
RK5 chipbreaker optimised for cast iron machining
Rhombus 55° geometry for flexible turning operations
0.8 mm corner radius for consistent edge strength

Consistent chip control for abrasive cast‑iron machining

The combination of the Tiger‑tec Silver coating and the RK5 chipbreaker delivers dependable chip formation when machining abrasive cast iron. The coated carbide grade WKK20S is tuned to withstand the frequent, short breaking chips typical of grey and nodular cast irons, so cycle times remain stable and manual chip handling is reduced. This technical configuration supports a lower rate of unexpected tool changes and contributes to a more predictable production flow.

Stable cutting edge and repeatable part quality

The Rhombus 55° geometry together with a 0.8 mm corner radius and a negative rake angle of 0° provides good edge security and repeatable dimensional results. The insert’s tolerance class M ensures consistent fit in standard toolholders, which helps maintain part accuracy across tool indexings. For operations where edge robustness and predictable wear behaviour matter, this geometry and grade combination reduces the risk of edge chipping and supports consistent surface finishes.

Economical use in automated and manual turning centres

As an indexable insert in the Tiger‑tec Silver family, this item reduces scrap and tooling overheads by offering multiple usable edges and a coating that extends life under demanding conditions. The insert thickness (06) and 15 mm size make it compatible with a wide range of toolholders designed for this DIN/ISO format, enabling simple integration into existing tool inventories. Further technical support and application data are available from Metav Werkzeuge to assist with process optimisation.

Material scope and production benefits

The cutting grade is explicitly assigned to ISO group K for cast iron, making it suitable for abrasive grey cast iron and applications where short, brittle chips predominate. The combination of coating technology and substrate hardness supports improved wear resistance and a stable cutting edge, which in turn can reduce downtime and improve overall process efficiency. Use of this insert promotes predictable tool performance and contributes to lower cost per component through extended edge life.

Contact Metav Werkzeuge for tailored application advice and to order the DNMA150608-RK5 WKK20S indexable turning insert from Walter Tools

Technical data

• SKU: DNMA150608-RK5-WKK20S-WALTER
• Designation: DNMA150608-RK5 WKK20S
• Product type: indexable turning insert (turning insert)
• Brand: Walter Tools
• Series: Tiger‑tec Silver

Core data

• Size: 15 mm
• Thickness: 6 mm
• Corner radius: 0.8 mm
• Rake angle: 0° (negative)
• Geometry: Rhombus 55°
• Tolerance class: M

Special features

• Grade: WKK20S
• Chipbreaker: RK5
• Coating: Tiger‑tec Silver (coated carbide)
• Material application: cast iron (ISO group K)
• Execution: A

FAQ

Is this insert suitable for all types of cast iron?
The DNMA150608-RK5 WKK20S is designed for ISO group K and is suitable for many cast iron types, including abrasive grey cast iron and common nodular grades, where the RK5 chipbreaker provides controlled chip formation.

What makes the Tiger‑tec Silver grade advantageous for cast‑iron turning?
The Tiger‑tec Silver coating on the WKK20S grade improves wear resistance against the abrasive nature of cast iron and supports longer edge life compared with uncoated carbide grades.

Can the insert be used in standard toolholders for DNMA formats?
Yes, the DNMA150608-RK5 WKK20S conforms to the standard DNMA format and the tolerance class M ensures compatibility with conventional DNMA toolholders.

How does the RK5 chipbreaker affect machining stability?
The RK5 chipbreaker is optimised for cast iron to produce short, manageable chips and to maintain a stable cutting load, which helps to reduce vibration and improves process predictability when using the DNMA150608-RK5 WKK20S.

What benefits does the 0.8 mm corner radius deliver for production parts?
A 0.8 mm corner radius enhances edge strength and reduces the risk of chipping, supporting consistent surface quality and dimensional repeatability over several indexings of the insert.

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

Protected trademarks and trade names are the property of their respective owners. Brand names such as Walter Tools are used for clarification only. There is no connection between Metav Werkzeuge and the named brands. The offered item is original, brand‑new goods from Walter Tools.