VNMG160404-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of the Tiger·tec Silver coating, the WKK20S carbide grade and the optimised MK5 chipbreaker to achieve consistent, productive machining of cast iron; order the VNMG160404-MK5 WKK20S turning indexable insert directly via Metav Werkzeuge or ask the consultants for tailored tooling advice.

VNMG160404-MK5 WKK20S – Turning indexable insert for cast iron, Tiger·tec Silver by Walter Tools

A VNMG160404-MK5 WKK20S turning indexable insert designed for efficient machining of cast iron with a rhombic 35° geometry and an MK5 chipbreaker.

Tiger·tec Silver coated carbide grade WKK20S
Optimised MK5 chipbreaker for cast iron
Rhombic 35° form, 0.4 mm corner radius

Increase machining productivity with a purpose-built grade

The combination of the Tiger·tec Silver coating and the WKK20S grade provides a balance between wear resistance and toughness that is tailored to abrasive cast-iron turning. The insert’s coated carbide substrate is engineered to cope with the short, brittle chips and high abrasion typical of grey and nodular cast irons, so cutting intervals are extended and tool changes are reduced. In practice, this means a more predictable process, less unplanned downtime and higher average component throughput for series and batch production.

Consistent chip control and improved surface finish

The MK5 chipbreaker is a purpose-designed geometry that supports reliable chip control when turning cast iron. With a negative rake of 0°, the insert promotes stable cutting forces and reduced vibration, which helps to maintain a consistent surface quality across the workpiece. For operators, this translates into fewer secondary operations and less time spent on manual finishing, while still achieving repeatable dimensional accuracy on turned parts.

Stable tool life through deliberate geometry and edge rounding

The rhombic 35° form combined with a 0.4 mm corner radius provides a robust cutting edge that withstands the intermittent, abrasive contact typical in cast-iron machining. The insert form gives flexibility in approach angles and can be used for medium to fine turning operations where edge life and resistance to micro-chipping are priorities. The result is a reliable compromise between cutting-edge strength and the accessibility required for confined turning applications.

Practical selection and process support for production environments

Specified for the ISO group K (cast iron), this indexable insert is a practical choice where abrasive wear and chip breakage dominate the machining challenge. The insert’s properties support stable cutting at industrial feed rates, and the coated carbide grade simplifies tool selection by combining wear resistance with sufficient toughness. For any questions regarding toolholders, cutting parameters or application optimisation, Metav Werkzeuge provides technical consultation to align the insert selection with the specific machining task.

For cast-iron turning that demands predictable performance, contact Metav Werkzeuge to discuss VNMG160404-MK5 WKK20S tooling options and application advice by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• SKU: VNMG160404-MK5-WKK20S-WALTER
• Article designation: VNMG160404-MK5 WKK20S
• Product type: Turning indexable insert
• Series: Tiger·tec Silver
• Grade: WKK20S
• Manufacturer: Walter Tools

Facts

• Size: 16
• Shape angle: 35°
• Corner radius: 0.4 mm
• Relief angle: 0° (negative)
• Chipbreaker: MK5
• Tolerance class: M
• Plate thickness: 04

Special features

• Coating technology: Tiger·tec Silver
• Material base: Coated carbide
• Application group: Cast iron (ISO group K)
• Insert form: Rhombus 35°
• Optimised for abrasive wear and breaking chips

FAQ

What materials is this insert suitable for?
The VNMG160404-MK5 WKK20S insert is intended for machining cast iron (ISO group K) and is optimised for the abrasive wear and short, brittle chips typical of those materials.

What role does the MK5 chipbreaker perform?
The MK5 chipbreaker on the VNMG160404-MK5 WKK20S promotes controlled chip formation and evacuation, improving process stability and helping to protect the cutting edge during cast-iron turning.

How does the 0.4 mm corner radius affect machining?
A 0.4 mm corner radius increases edge strength and resistance to chipping in intermittent cuts, which helps to extend tool life and maintain a consistent surface finish on turned cast-iron components.

Is the Tiger·tec Silver coating beneficial for long runs?
Yes, the Tiger·tec Silver coating enhances wear resistance on the WKK20S grade, supporting longer tool life and more predictable performance during extended production runs.

Which operations is this insert best suited for?
The insert is suitable for medium to fine turning operations on cast iron where consistent edge life and chip control are required; it is particularly useful in production contexts that demand repeatable results.

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

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