VBMT160404-FK6 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver coating, grade WKK20S and a controlled FK6 chipbreaker for productive, repeatable cast‑iron turning; order or discuss application with Metav Werkzeuge for tailored advice.

VBMT160404-FK6 WKK20S turning insert – Tiger‑tec Silver for cast iron | Walter Tools

The VBMT160404-FK6 WKK20S is a rhombic 35° turning insert with an FK6 chipbreaker, optimised for productive machining of cast iron components.

• Tiger‑tec Silver coating for high productivity
• Grade WKK20S tailored for cast iron
• Rhombic 35° insert, 0.4 mm corner radius
• FK6 chipbreaker for controlled chip formation

Increased productivity through a coating designed for abrasive wear

The combination of the Tiger‑tec Silver coating and the WKK20S grade results in a cutting edge that resists abrasive wear typical of cast‑iron machining, extending effective tool life and reducing changeover frequency. Coated carbide technology here is tuned to the short, brittle chips and high abrasiveness of cast iron, which means fewer interruptions and more consistent cycle times on production lathes. This leads to measurable savings in operating costs and higher machine uptime when processing series components.

Geometry that improves surface quality and process stability

The rhombic 35° geometry and a 0.4 mm corner radius deliver a balance between edge strength and finishing capability. A small radius like this supports reliable cutting edge robustness while still enabling acceptable surface quality without additional rework. The 5° clearance angle reduces rubbing at the flank, and the FK6 chipbreaker is engineered to form and control the short, fragmented chips typical for cast‑iron grades, lowering the risk of built‑up edge and part damage. Together, these features provide repeatable dimensional stability in batch production.

Designed for integration in industrial turning operations

This insert is supplied in the standard VBMT format for straightforward toolholder compatibility and is available in the Tiger‑tec Silver series for consistent application performance. The grade and chipbreaker combination is especially suitable where stable chip formation and predictable wear behaviour are priorities. Toolroom managers will appreciate the easier process planning afforded by a carbide grade optimised for cast iron, because feed and speed windows are reproducible and tool change intervals can be planned with confidence. For special requirements, application advice is available from Metav Werkzeuge.

For robust cast‑iron turning with Tiger‑tec Silver performance, contact Metav Werkzeuge for ordering and application support: Metav Werkzeuge GmbH, info@metav-werkzeuge.com, +49 2822 7131930

Technical data

• Article number: VBMT160404-FK6-WKK20S-WALTER
• Designation: VBMT160404-FK6
• Product type: turning insert
• Manufacturer: Walter Tools

Numbers / Core technical data

• Insert size: 16
• Thickness: 04
• Corner radius: 0.4 mm
• Relief/relief angle: 5°
• Form angle: Rhombic 35°
• Tolerance class: M

Special features / Versions

• Series: Tiger‑tec Silver
• Grade: WKK20S (coated carbide)
• Chipbreaker: FK6
• Material application: cast iron (ISO group K)
• Execution: T

FAQ

Which materials is this insert suitable for?
The VBMT160404-FK6 WKK20S turning insert from Walter Tools is optimised for machining cast iron (ISO group K); the WKK20S grade and Tiger‑tec Silver coating are tuned for the abrasive wear and short, breaking chips typical of these materials.

What does the 0.4 mm corner radius mean for productivity and finish?
A 0.4 mm corner radius increases edge strength compared with a very small radius while still allowing good surface quality; it helps avoid premature chipping on interrupted cuts and supports consistent dimensional results.

How does the FK6 chipbreaker influence machining?
The FK6 chipbreaker shapes and controls short, brittle chips commonly produced when turning cast iron, improving chip evacuation and reducing the risk of chip entanglement and built‑up edge on the cutting edge.

Is the grade coated and what are the benefits of Tiger‑tec Silver?
Yes — the grade WKK20S is a coated carbide within the Tiger‑tec Silver technology. The coating improves resistance to abrasive wear and thermal loads, which translates to longer tool life and more stable machining for abrasive materials like cast iron.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only. There is no connection between our company and the named brands. The offered article is original, brand‑new goods from the manufacturer.