WNMG060408-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Benefit from the combination of the Tiger‑tec Silver coating and the WKK20S grade tuned for abrasive cast‑iron machining, together with the Trigon 80° geometry and MK5 chipbreaker for stable chip control; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

WNMG060408-MK5 WKK20S Trigon 80° turning insert for cast iron — Walter Tools

The WNMG060408-MK5 WKK20S is a Trigon 80° indexable insert optimised for cast‑iron turning, featuring the Tiger‑tec Silver coated WKK20S grade and an MK5 chipbreaker for reliable chip formation.

• Tiger‑tec Silver coated cutting grade
• WKK20S optimised for cast iron machining
• Trigon 80° insert geometry
• 0.8 mm corner radius, 0° negative rake

Consistent cutting performance for abrasive cast iron

The Tiger‑tec Silver technology and the WKK20S grade deliver wear resistance and consistent edge behaviour when machining cast iron. The insert’s coated carbide substrate reduces abrasive wear and extends tool life under interrupted or highly abrasive cutting conditions. By adapting the cutting grade specifically to the short, brittle chips typical of cast materials, the plate promotes stable chip formation, which translates into fewer tool changes and a more predictable production rhythm. This results in measurable improvements in productivity and lower unit machining costs.

Geometry and chip control that improve process reliability

The Trigon 80° shape combined with the MK5 chipbreaker and a 0.8 mm corner radius provides secure cutting entry and effective chip segmentation. The 0° negative rake creates a robust cutting edge that resists impact and maintains dimensional consistency, especially on heavy‑duty turning operations. In practical terms, this geometry reduces vibration and helps maintain surface finish, so the insert supports repeatable results on batch production runs while simplifying tool selection and clamping strategies.

Practical advantages in workshop operation

Designed as a workhorse for cast‑iron applications, the insert enables shorter setup times and fewer interventions thanks to its predictable wear behaviour and reliable edge security. The coated carbide construction is explained simply: a hard substrate with a specialised multi‑layer coating that reduces friction and thermal degradation. The outcome is improved tool life and more stable cycle times. For engineers and production planners, this equates to higher throughput and enhanced process control without complex parameter tuning.

Contact Metav Werkzeuge for tailored machining recommendations, delivery options and technical clarification on the WNMG060408-MK5 WKK20S turning insert by Walter Tools

Technical data

• SKU: WNMG060408-MK5-WKK20S-WALTER
• Designation: WNMG060408-MK5 WKK20S
• Product type: Turning insert (indexable)

Facts

• Insert size: 06
• Thickness: 04
• Corner radius: 0.8 mm
• Relief angle: 0° (negative)
• Tolerance class: M

Special features

• Coating/series: Tiger‑tec Silver
• Grade: WKK20S
• Chipbreaker: MK5
• Geometry: Trigon 80°
• Applicable material group: Cast iron (K)
• Base material: Coated carbide

FAQ

What material is the insert intended for?
The WNMG060408-MK5 WKK20S turning insert is specified for cast iron machining; the WKK20S grade and Tiger‑tec Silver coating are tuned to manage abrasive wear and short, breaking chips.

How does the MK5 chipbreaker affect machining?
The MK5 chipbreaker on the Walter Tools insert segments and evacuates chips effectively, improving surface quality and helping to avoid built‑up edge during cast‑iron turning.

Is the Trigon 80° geometry suitable for heavy cutting?
Yes. The Trigon 80° form with 0° negative rake gives a robust cutting edge that withstands heavy and interrupted cuts while maintaining dimensional stability.

Can this insert be used for other materials besides cast iron?
The WKK20S grade is optimised for cast iron (material group K); suitability for other materials is limited and should be validated for each application.

What does the Tiger‑tec Silver series offer in practice?
Tiger‑tec Silver provides a multi‑layer coating system that reduces friction and improves wear resistance, leading to longer tool life and more consistent machining performance with the Walter Tools turning insert.

Manufacturer: Walter Tools; Derendinger Straße 53; 72072 Tübingen; Germany

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