CCMT060204-RK4 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of high wear resistance, precise chip control and a robust geometry to maintain productivity in cast iron turning; order directly via Metav Werkzeuge or consult our specialists for application-specific recommendations.

CCMT060204-RK4 WKK20S – Turning and boring indexable insert, Tiger‑tec Silver, for cast iron (Walter Tools)

The CCMT060204-RK4 WKK20S is an indexable turning and drilling insert designed for productive cast iron machining, offering a rhombic 80° form for versatile tool engagement.

• Tiger‑tec Silver coating for high wear resistance
• Optimised for cast iron (ISO group K)
• RK4 chipbreaker for controlled chip formation
• 0.4 mm corner radius, 7° clearance angle

High productivity and consistent tool life for cast iron components

The combination of the WKK20S grade and the Tiger‑tec Silver coating targets the abrasive wear typical of cast iron, delivering a predictable edge life that supports stable cycle times. As a coated carbide cutting grade optimised for ISO group K (cast iron), the insert provides reliable performance in interrupted cuts and in processes that produce short, brittle chips. The result is reduced tool-change frequency and more consistent part tolerances, which improves overall process economy without compromising surface quality.

Geometry and chip control explained for dependable cutting

The rhombic 80° shape paired with a 0.4 mm corner radius and a 7° clearance angle gives a balance between strength and precision: the larger corner radius increases edge robustness for roughing while still enabling acceptable finishes for finishing passes. The RK4 chipbreaker is engineered to break and evacuate chips efficiently in cast iron turning, reducing the risk of built-up edge and machine downtime. Clearances and radii are fine-tuned to allow stable cutting forces and repeatable contact conditions in indexable-tool systems.

Coating technology and application scope for process assurance

The insert is supplied in the Walter Tools Tiger‑tec Silver series and is a coated carbide type, specifically formulated for abrasive cast iron work. The coating enhances thermal and chemical resistance at the cutting edge, supporting higher cutting parameters and thus better productivity. Tolerance class M and the standard designation ensure interchangeability with common toolholders that accept CCMT plates. For application support or parameter recommendations when machining grey or nodular cast iron, Metav Werkzeuge’s technical team can advise on optimal feeds, speeds and coolant strategies to match production goals.

Contact Metav Werkzeuge for tailored cutting data, grade comparisons or batch supply options for Walter Tools Tiger‑tec Silver inserts and receive expert recommendations from our application consultants.

Technical Data

• Article number: CCMT060204-RK4-WKK20S-WALTER
• Designation: CCMT060204-RK4 WKK20S
• Manufacturer: Walter Tools
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte
• Grade: WKK20S
• Series: Tiger‑tec Silver

Core data

• Corner radius: 0.4 mm
• Clearance angle: 7°
• Plate form: Rhombus 80°
• Plate size: 06
• Plate thickness: 02
• Tolerance class: M

Special features

• Coating: Tiger‑tec Silver
• Material: coated carbide (cutting grade)
• Chipbreaker: RK4
• Application: Cast iron (ISO group K)

FAQ

What materials is this insert suitable for?
The CCMT060204-RK4 WKK20S is specified for machining cast iron (ISO group K) and its WKK20S grade and Tiger‑tec Silver coating are tuned to abrasive conditions typical of those materials.

How does the RK4 chipbreaker benefit production?
The RK4 chipbreaker provides reliable chip shaping and evacuation in cast iron turning, which reduces interruptions and contributes to consistent cycle times with the CCMT060204-RK4 insert.

What does the 0.4 mm corner radius mean for surface finish?
A 0.4 mm corner radius increases edge strength for robust cutting while allowing acceptable surface finishes; it is a compromise between durability and achievable finish quality.

Is this insert compatible with common CCMT toolholders?
The insert follows the CCMT designation and tolerance class M, making it compatible with standard toolholders designed for CCMT indexable plates.

Can Metav Werkzeuge advise on cutting data for this grade?
Yes, Metav Werkzeuge provides application support and can recommend feeds, speeds and coolant strategies for the WKK20S grade in cast iron operations.

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

Protected trademarks and trade names are the property of their respective owners. Mention of brand names serves exclusively for explanation and product identification; there is no affiliation between Metav Werkzeuge and the trademark holders. The offered article is an original, brand‑new product of the manufacturer.