VNMA160412-RK5 WKK10S WKK10S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, the RK5 chipbreaker and the compact Rhombus 35° geometry to increase tool life and productivity in cast iron turning; order the VNMA160412-RK5 WKK10S directly via Metav Werkzeuge or consult our specialists for application support.

VNMA160412-RK5 WKK10S indexable turning insert – Walter Tools, optimised for cast iron machining with Tiger·tec Silver coating

The VNMA160412-RK5 WKK10S is an indexable turning insert designed for productive and reliable chip-controlled machining of cast iron components in industrial turning applications.

• Tiger·tec Silver coated carbide grade
• Optimised for cast iron (ISO group K)
• Rhombus 35° geometry for versatile turning
• RK5 chipbreaker for short, controlled chips

Increase throughput with a coating tuned for abrasive wear

The combination of the Tiger·tec Silver coating and the WKK10S grade delivers improved resistance to abrasive wear, which is particularly relevant for grey and nodular cast iron. The tailored coating system ensures stable chip formation and extended tool life under interrupted cuts and typical cast iron abrasiveness, leading to fewer indexings and longer uninterrupted production runs. This results in measurable gains in machine uptime and a lower cost per component.

Predictable chip control and surface quality from the RK5 breaker

With the RK5 chipbreaker and a Rhombus 35° insert shape, the insert produces consistently short, broken chips and a uniform cutting load. The chip geometry reduces the risk of entanglement and eases chip evacuation, which helps to maintain a steady cutting process and improve surface finish quality. The combination of chip control and geometry supports higher metal removal rates while keeping the process stable.

Geometry and relief configured for robust engagement

The insert’s 0° (negative) relief angle and 1.2 mm corner radius are selected for strength in interrupted or heavy cuts typical in work with cast iron components. A negative rake increases edge robustness and reduces the likelihood of chipping under shock loads, while the larger corner radius offers increased edge life and contributes to consistent dimensional results across batches.

Clear material focus and application advantages

This turning grade is classified for ISO group K (cast iron), which ensures that the substrate, coating and chipformer are aligned to the mechanical properties of cast irons: brittle fracture behaviour and high abrasiveness. For manufacturers aiming to improve throughput on cast-iron parts, the material-specific tuning provides a reliable, cost-effective solution without the need for constant process tuning.

Contact Metav Werkzeuge for tailored application advice on machining cast iron with Walter Tools inserts or to request a cutting trial recommendation – email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: VNMA160412-RK5-WKK10S-WALTER
• Designation: VNMA160412-RK5 WKK10S
• Manufacturer: Walter Tools

Facts

• Plate size: 16 mm
• Corner radius: 1.2 mm
• Relief angle: 0° (negative)
• Thickness code: 04
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK10S (coated carbide)
• Chipbreaker: RK5
• Plate form: Rhombus 35°
• Material group: K (cast iron)
• Execution: A

FAQ

What materials is this insert suitable for?
The VNMA160412-RK5 WKK10S by Walter Tools is specifically tuned for ISO group K materials, meaning it is intended for machining cast iron where abrasive wear and short, breaking chips are common.

How does the RK5 chipbreaker affect machining?
The RK5 chipbreaker promotes short, controlled chips and improves chip evacuation, which stabilises the cutting process and supports a consistent surface finish when using the VNMA160412-RK5 WKK10S.

Is the insert coated and what is the benefit?
Yes, the insert uses the Tiger·tec Silver coating on a coated carbide substrate; this increases wear resistance and delivers longer tool life in abrasive cast iron applications.

What does the negative 0° relief angle mean for cutting performance?
A negative 0° relief gives the cutting edge greater robustness under heavy or interrupted cuts, reducing the risk of edge chipping and supporting repeatable performance in roughing operations.

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

Walter Tools is part of a global precision tooling family; the Walter brand stands for high process security, precise machining, excellent surface quality and reliable tool life. Marked trademarks and product names are the property of their respective owners. The offered article is an original, factory-new product of the manufacturer.