TNMG160408-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

The combination of a Tiger·tec Silver coated grade, precise MK5 chip control and a triangular 60° geometry ensures stable machining of abrasive cast iron while reducing tool changes; this supports a predictable production rhythm and consistent surface quality. Order the TNMG160408-MK5 WKK20S turning insert directly via Metav Werkzeuge or ask our consultants if needed.

TNMG160408-MK5 TNMG160408-MK5 WKK20S turning insert for cast iron — Walter Tools

A TNMG160408-MK5 WKK20S turning insert engineered for cast iron applications, combining the Tiger·tec Silver coating technology with a secure MK5 chipbreaker and a 0° negative rake for demanding roughing of grey and nodular cast irons

• Tiger·tec Silver coated grade WKK20S
• Optimised for cast iron machining
• Triangular 60° insert with 0.8 mm radius
• MK5 chipbreaker for secure chip control

Stable chip control and predictable wear for cast iron

The insert’s MK5 chipbreaker and coated carbide grade are designed to handle the short, breaking chips typical of cast iron. The combination of a Tiger·tec Silver surface and the WKK20S grade increases resistance to abrasive wear, which in turn extends effective cutting intervals and reduces unscheduled tool changes. The 0° negative rake and triangular 60° geometry provide robust cutting edges that maintain dimensional stability during interrupted cuts; the 0.8 mm corner radius helps distribute loading evenly, offering a balance between edge strength and surface finish. This results in a measurable improvement in process reliability for repetitive turning operations.

Measurable productivity benefits and material suitability

Using a grade tailored to cast iron brings direct operational advantages: longer tool life and fewer insert swaps lead to reduced downtime and higher machine uptime. The tolerance class M supports repeatable indexing accuracy in multi-insert toolholders, and the coated carbide substrate limits abrasive wear on the cutting edge. In production terms, these properties convert into lower part-cycle variability and more consistent finishing quality across batches. For shops aiming to streamline machining of grey or nodular cast irons, this insert supports efficient stock removal while maintaining component tolerances.

Practical selection notes and application behaviour

For general turning tasks on cast-iron components, the triangular insert form and the WKK20S grade provide a versatile balance between productivity and edge strength. The coated hardmetal construction (coated carbide) is optimised for abrasive cast-iron chips and frequent chip breakage, so the insert performs well under standard coolant conditions and interrupted cuts typically found in automotive and pump-gear production. For specific feeds and speeds or to match toolholder geometries, consult technical data sheets or contact Metav Werkzeuge for tailored recommendations; the right combination of insert geometry and cutting data ensures consistent surface quality and optimal tool economy.

Contact Metav Werkzeuge for application advice and availability of the Walter Tools TNMG160408-MK5 WKK20S turning insert — eMail: info@metav-werkzeuge.com, Tel: +49 2822 7131930

Technical data

• Article number: TNMG160408-MK5-WKK20S-WALTER
• Product label: Drehwendeschneidplatte TNMG160408-MK5 WKK20S Walter Tools
• Manufacturer: Walter Tools
• Product type: Drehwendeschneidplatte
• Series: Tiger-tec Silver

Numbers / Core technical data

• Insert size: 16 mm
• Thickness: 04
• Corner radius: 0.8 mm
• Free angle: 0° (negativ)
• Tolerance class: M

Special features / Designs

• Grade: WKK20S (coated carbide, Tiger·tec Silver)
• Insert form: Triangle 60°
• Chipbreaker: MK5
• Material application: Cast iron (ISO group K)

FAQ

What materials is this insert intended for?
The TNMG160408-MK5 WKK20S insert from Walter Tools is intended primarily for cast iron (ISO group K), optimised for abrasive wear and the short, breaking chips common in those materials.

Which features ensure secure chip control?
Chip control is achieved by the MK5 chipbreaker combined with the triangular 60° form and the coated WKK20S grade, which together promote predictable chip formation during turning.

How does the Tiger·tec Silver technology benefit machining?
The Tiger·tec Silver coating on this turning insert improves resistance to abrasive wear and supports longer cutting intervals in cast iron applications, contributing to consistent surface finish and fewer tool changes.

What does the 0.8 mm corner radius influence?
The 0.8 mm corner radius enhances edge strength and distributes cutting forces, improving dimensional stability in heavy or interrupted cuts without compromising finish quality.

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

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