VCMW160408-RK6 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of high wear resistance, stable chip control and a geometry tuned for abrasive materials to reduce tool changes and maintain constant component quality; order the insert through Metav Werkzeuge or request application advice from our consultants.

VCMW160408-RK6 WKK20S indexable turning insert — Tiger·tec Silver coating, for cast iron by Walter Tools

VCMW160408-RK6 WKK20S is an indexable turning insert designed for productive machining of abrasive cast iron components, combining a wear-resistant coating with a chipbreaker geometry that stabilises cutting performance

• Tiger·tec Silver coating for improved wear resistance
• Optimised RK6 chipbreaker for cast iron
• Rhombic 35° geometry, 0.8 mm corner radius
• Suitable for abrasive cast iron machining (ISO K)

Longer tool life through advanced coating technology

The insert is equipped with the Tiger·tec Silver coating and the WKK20S carbide grade, a combination that is specifically tailored to the demands of cast iron machining. The coating reduces abrasive wear and protects the cutting edge against premature flank erosion, which results in fewer tool changes and longer productive cycles. For practical terms, the coating and grade mean the insert can sustain consistent cutting at the heat and abrasion levels typical for grey and ductile cast irons, improving cost efficiency per part while maintaining repeatable performance.

Geometry and chip control that improve surface finish

The rhombic 35° shape together with the RK6 chipbreaker and a 0.8 mm corner radius are configured to produce short, controllable chips when cutting brittle or abrasive cast-iron materials. A 7° relief angle supports stable engagement and reduces the tendency to build up edge deposits, which helps to maintain dimensional accuracy. In practice, these geometric features translate into better surface quality on the component and less operator intervention for chip management, especially in interrupted cuts and roughing operations.

Productivity gains through process stability

By combining a robust grade with a tailored chipbreaker, the insert delivers measurable advantages in production environments where cycle time and tool life are critical. The design is aimed at delivering higher throughput with predictable wear behaviour, so that setup intervals and unplanned downtimes are reduced. This focus on productivity and process reliability is particularly beneficial for series turning of cast-iron parts where consistent component quality and minimised secondary operations are decisive for overall efficiency.

Application advice and selection notes for workshops

This insert is intended for turning operations on materials classified under ISO group K (cast iron); it is not specified for stainless or high-alloy steels in the provided data. The RK6 chipbreaker is effective for producing short chips in interrupted and continuous cuts, while the rhombic geometry enables flexible approach angles. For best results, index inserts according to the machine tool and holder specifications and match cutting parameters to the workpiece grade. If further machining data or compatibility checks are required, consultation with our technical team is recommended.

For reliable cast-iron turning with stable chip control, request Walter Tools VCMW160408-RK6 WKK20S through Metav Werkzeuge or ask for tailored cutting data via info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: VCMW160408-RK6-WKK20S-WALTER
• Manufacturer: Walter Tools
• Product type: Indexable turning insert
• Series: Tiger·tec Silver
• Grade: WKK20S
• ISO designation: VCMW160408-RK6 WKK20S

Facts

• Insert size: 16
• Thickness: 04
• Relief angle: 7°
• Corner radius: 0.8 mm
• Insert shape: Rhombic 35°

Special features

• Chipbreaker: RK6
• Material application: cast iron (ISO K)
• Coating technology: coated carbide (Tiger·tec Silver)
• Tolerance class: M

FAQ

What materials is this insert intended for?
The insert is specified for machining materials in ISO group K, i.e. cast iron; the WKK20S grade and Tiger·tec Silver coating are optimised for abrasive cast-iron applications.

How does the RK6 chipbreaker affect machining?
The RK6 chipbreaker produces short, controlled chips in cast-iron turning, improving chip evacuation and reducing the risk of workpiece damage from long, stringy swarf.

What does the rhombic 35° shape mean for cutting strategy?
The rhombic 35° geometry provides flexible approach angles and good accessibility for a variety of turning operations, allowing for effective roughing and finishing with the same insert geometry.

Is this insert suitable for interrupted cuts?
Yes, the combination of the 0.8 mm corner radius, 7° relief angle and robust grade supports stable performance in interrupted cutting conditions typical for cast-iron components.

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

The Walter AG (brand: Walter Tools) is part of the Sandvik group and is a recognised manufacturer of precision metal‑cutting tools. Protected trademarks and product names are the property of their respective owners. The offered item is an original, factory‑new product of the manufacturer.