VNMG160408-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Benefit from the combination of the Tiger·tec Silver coating, WKK20S grade and MK5 chipbreaker for productive, repeatable machining of cast iron; order the VNMG160408-MK5 WKK20S turning insert directly via Metav Werkzeuge or request application advice from our consultants.

VNMG160408-MK5 WKK20S — Turning insert for cast iron, Tiger·tec Silver by Walter Tools

VNMG160408-MK5 WKK20S is a negative‑rake rhombic 35° turning insert designed for reliable finishing and medium‑roughing of cast iron components

• Tiger·tec Silver coating for long life
• WKK20S grade tuned for cast iron
• MK5 chipbreaker for reliable chip control
• Rhombic 35° with 0.8 mm corner radius

Maximise productivity in cast‑iron turning

The VNMG160408-MK5 WKK20S insert combines the Tiger·tec Silver coating with a wear‑resistant WKK20S grade to deliver extended tool life when machining cast iron. The coated cemented‑carbide substrate resists abrasive wear typical of grey and nodular cast irons, which reduces the frequency of index changes and supports steady production cycles. The rhombic geometry and negative relief are optimised for stable cutting forces, so cycle times remain consistent even under interrupted cuts, offering a measurable productivity gain in high‑volume turning applications.

Consistent chip control and surface quality

The integrated MK5 chipbreaker and the 0° (negative) relief angle provide controlled chip formation and evacuation, lowering the risk of built‑up edge and surface damage. A well‑matched chipbreaker reduces heat concentration at the cutting edge and helps maintain a consistent cut, which in turn supports tighter tolerances and repeatable surface finishes. The 0.8 mm corner radius helps balance strength and edge sensitivity, giving a compromise between fine finish capability and resistance to chipping during heavier passes.

Simple tooling logistics with reliable repeatability

Standard VNMG indexing and the common thickness 04 make the insert straightforward to stock and fit into existing toolholders, while tolerance class M ensures consistent seating and runout behaviour. The combination of proven coating technology and a grade tailored to the demands of cast iron machining delivers predictable wear behaviour, which simplifies process planning and cost forecasts. For operations seeking stable, repeatable results, the insert supports reduced tool change frequency and improved overall equipment effectiveness.

Contact Metav Werkzeuge for tailored cutting data, availability of genuine Walter Tools Tiger·tec Silver inserts, or to discuss optimal machining parameters for cast iron components — eMail: info@metav-werkzeuge.com • Tel: +49 2822 7131930

Technical Data

• SKU: VNMG160408-MK5-WKK20S-WALTER
• Article designation: VNMG160408-MK5
• ISO designation: VNMG160408-MK5 WKK20S
• Product type: Drehwendeschneidplatte (turning insert)
• Manufacturer: Walter Tools

Core specifications

• Insert size: 16
• Thickness: 04
• Corner radius: 0.8 mm
• Relief angle: 0° (negative)
• Plate form: Rhombus 35°
• Tolerance class: M

Special features

• Grade: WKK20S
• Series: Tiger·tec Silver
• Chipbreaker type: MK5
• Material application: Cast iron (K)
• Material: coated cemented carbide

FAQ

What materials is this insert suitable for?
The VNMG160408-MK5 WKK20S insert is engineered primarily for cast iron machining; the WKK20S grade and Tiger·tec Silver coating address the abrasive wear and short, breaking chips typical of cast materials.

How does the MK5 chipbreaker improve machining?
The MK5 chipbreaker on this Walter Tools insert promotes controlled chip formation and reliable evacuation, which helps maintain surface quality and reduces the likelihood of tool‑related interruptions during turning.

Is this insert compatible with standard VNMG toolholders?
Yes, the VNMG160408-MK5 WKK20S follows standard VNMG geometry and a thickness of 04, making it compatible with common VNMG toolholders where the seat and clamping correspond to tolerance class M.

What benefits does the Tiger·tec Silver series provide?
Tiger·tec Silver coating improves resistance to abrasive wear and thermal load, extending the effective tool life of the WKK20S grade and contributing to stable, repeatable machining results on cast iron components.

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

Protected trademarks and trade names are the property of their respective owners. Brand names are mentioned for explanatory purposes only and do not imply any affiliation with Metav Werkzeuge. The offered article is an original, factory‑new product of the manufacturer Walter Tools. The Walter name and trademarks are used solely to describe the product origin and authenticity.