TNMA160404-RK5 WKK20S Wendeplatten - Walter Tools

Take advantage of the Tiger‑tec Silver coating and WKK20S grade for reliable wear resistance in abrasive cast iron machining, combined with the RK5 chipbreaker and 60° triangular geometry for stable chip control and consistent component quality — order the insert directly via Metav Werkzeuge or consult the technical team for process data.

TNMA160404-RK5 WKK20S – turning indexable insert, Tiger‑tec Silver, Walter Tools

A TNMA160404-RK5 WKK20S turning indexable insert engineered for machining cast iron, featuring the Tiger‑tec Silver coating and an RK5 chipbreaker for controlled, short chips

• Tiger‑tec Silver coating for high wear resistance
• Optimised RK5 chipbreaker for short, broken chips
• 60° triangular insert for versatile turning
• Specifically developed for cast iron (ISO group K)

Consistent performance in abrasive cast iron machining

The combination of the Tiger‑tec Silver coating and the WKK20S grade is aimed specifically at the challenges of cast iron workpieces. Abrasive constituents and frequently short, brittle chips in these materials accelerate flank wear; the coated grade reduces abrasive wear and helps maintain a stable cutting edge for longer tool life. In practice, this means fewer insert changes, steadier process parameters and improved productivity during continuous turning operations.

Robust geometry that secures dimensional accuracy

The 60° triangular shape together with a 0.4 mm corner radius and a 0° (negative) clearance produces a mechanically stable cutting edge suited to interrupted cuts and high forces. The RK5 chipbreaker is tailored for short, broken chip formation, reducing risk of entanglement and improving chip evacuation. These geometric features support repeatable part diameters and a reliable surface finish while keeping machining forces predictable — an advantage when batch consistency is critical.

Practical application benefits and selection guidance

Series and grade choices matter: the Tiger‑tec Silver line offers a broad, application‑oriented performance range for cast iron (ISO group K). The insert’s designation and dimensions suit standard toolholders that accept TNMA formats; thickness and form enable stable clamping and effective heat distribution. For typical use, the insert excels in roughing and medium finishing of grey and nodular cast irons, where stable chip control and wear resistance deliver economic machining through longer indexable life and fewer tool changes.

Contact Metav Werkzeuge today for tailored cutting parameters, application advice and to secure genuine Walter Tools Tiger‑tec Silver inserts for cast iron machining

Technical data

• SKU: TNMA160404-RK5-WKK20S-WALTER
• Designation: TNMA160404-RK5 WKK20S
• Manufacturer: Walter Tools
• Series: Tiger‑tec Silver

Dimensions & tolerances

• Insert size: 16 mm
• Plate thickness: 04
• Corner radius: 0.4 mm
• Insert shape: Triangle 60°
• Clearance angle: 0° (negative)
• Tolerance class: M

Features & material application

• Chipbreaker: RK5
• Grade: WKK20S
• Execution: A
• Plate designation without grade: TNMA160404-RK5
• ISO designation: TNMA160404-RK5 WKK20S
• Suitable for: cast iron (ISO group K)

FAQ

Which materials is this insert intended for?
The TNMA160404-RK5 WKK20S from Walter Tools is optimised for cast iron (ISO group K); the WKK20S grade and Tiger‑tec Silver coating address abrasive wear and chip characteristics typical of these materials.

For which machining operations is the insert recommended?
This turning indexable insert is suited to roughing and medium finishing of cast iron components; the RK5 chipbreaker and robust 60° geometry enable stable chip control and reliable edge life during heavy cuts and intermittent machining.

What is the corner radius and why does it matter?
The insert has a 0.4 mm corner radius; this radius increases edge strength and helps produce a consistent surface finish, balancing cutting forces against the need for a defined cutting edge in cast iron turning.

How does the Tiger‑tec Silver coating improve performance?
The Tiger‑tec Silver coating reduces abrasive wear and improves thermal stability at the cutting edge, extending insert life and maintaining dimensional consistency over longer production runs.

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

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