WNMA080404-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

High wear resistance, predictable chip control and a robust Trigon geometry combine to reduce tool changes and keep production flowing. The Tiger·tec Silver grade and RK5 chipbreaker deliver repeatable performance in abrasive cast‑iron turning; order the insert directly via Metav Werkzeuge or contact our consultants for application advice.

WNMA080404-RK5 WKK20S – Trigon 80° indexable turning insert, Tiger·tec Silver (Walter Tools)

The WNMA080404-RK5 WKK20S is a Trigon 80° indexable turning insert designed for reliable cast‑iron machining, offering a negative 0° relief and an RK5 chipbreaker for consistent chip formation

• Tiger·tec Silver coating for extended tool life
• Optimised for cast iron (ISO K)
• Trigon 80° form with 0.4 mm corner radius
• RK5 chipbreaker for reliable chip control

Stronger process control through tailored grade and chip management

The combination of Tiger·tec Silver coating and the WKK20S grade addresses the main challenges when machining cast iron, namely abrasive wear and short, brittle chips. The coated carbide composition improves resistance to flank and crater wear, which in turn reduces the frequency of tool changes and contributes to a steadier production rhythm. The RK5 chipbreaker is engineered to break chips reliably in cast‑iron applications (ISO K), ensuring predictable chip flow and safer swarf handling. The negative 0° relief provides a sturdier cutting edge for interrupted cuts and heavier engagement, translating technical characteristics into measurable uptime benefits.

Geometry and tolerance for consistent accuracy and surface quality

The insert’s Trigon 80° form delivers a stable cutting edge with improved rigidity compared with sharper point styles, making it suitable for a range of turning tasks where stability matters. The 0.4 mm corner radius balances edge strength and achievable surface finish, while the tolerance class M supports repeatable seating and alignment in indexable holders. Markings such as insert size 08 and thickness 04 relate to standard toolholder compatibility; these dimensions, combined with the robust geometry, make the component easy to integrate into existing tooling systems without sacrificing process control or part quality.

Designed for reliable integration and predictable lifetime

The design focus of this grade and series is on process security and broad applicability. Tiger·tec Silver technology supplies a modern, wear‑resistant coating that extends cutting life under abrasive conditions, and the insert’s form factor simplifies tool‑change logistics in batch production. As part of the Walter Tools portfolio, the component benefits from proven production standards and quality control that support consistent edge life and repeatable results. For operations seeking reduced downtime and clearer life‑cycle planning, the insert’s predictable wear behaviour and standardised geometry translate into calculable savings and lower process variance.

Contact Metav Werkzeuge for tailored application advice or to request a quotation for this Walter Tools turning insert; call +49 2822 7131930 or eMail info@metav-werkzeuge.com

Technical Data

• Article number / SKU: WNMA080404-RK5-WKK20S-WALTER
• Designation: WNMA080404-RK5 WKK20S
• Grade: WKK20S
• Series: Tiger·tec Silver
• Brand: Walter Tools
• Execution: A
• Chipbreaker: RK5

Core specifications

• Insert form: Trigon 80°
• Insert size: 08
• Thickness: 04
• Corner radius: 0.4 mm
• Relief angle: 0° (negative)
• Tolerance class: M

Features / Applications

• Coating: Tiger·tec Silver (coated carbide)
• Suitable for: Cast iron (ISO K)
• Optimised for abrasive wear in cast materials
• Negative geometry for robust performance
• Series description: WKK20S – wear‑resistant, universal/tough

FAQ

What materials is this insert best suited for?
The WNMA080404-RK5 WKK20S indexable turning insert is optimised for cast iron (ISO K), where abrasive wear and short, brittle chips are typical.

What does the WKK20S grade offer compared with other grades?
WKK20S is a coated carbide grade from the Tiger·tec Silver family, designed for high wear resistance and universal/tough performance in cast‑iron machining.

How does the RK5 chipbreaker affect machining?
The RK5 chipbreaker provides controlled chip formation specific to cast iron, improving swarf control and reducing the risk of long, stringy chips.

Is the insert suitable for interrupted cuts or heavy engagement?
Yes. The negative 0° relief and Trigon 80° geometry create a robust cutting edge able to withstand interrupted cuts and heavier cutting forces.

What are the key dimensions to check for toolholder compatibility?
Check insert size 08, thickness 04 and a corner radius of 0.4 mm to ensure correct seating and expected cutting geometry.

Hersteller: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany

Protected trademarks and trade names are the property of their respective owners. Brand names and protected trademarks are cited for explanatory purposes only. There is no connection between our company and the mentioned brands. The offered item is an original factory‑new product of the manufacturer.