SNMA120416-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver wear resistance, an RK5 chipbreaker optimised for cast iron and the stable square 90° geometry for reliable, high‑productivity turning; order directly via Metav Werkzeuge or contact their consultants for specification support.

SNMA120416-RK5 WKK20S indexable turning insert — Walter Tools, Tiger‑tec Silver for cast iron

The SNMA120416-RK5 WKK20S is a square, negative‑rake indexable turning insert engineered for productive machining of cast iron components in turning operations

• Tiger‑tec Silver coating for abrasion resistance
• RK5 chipbreaker optimised for cast iron
• Square 90° form with 1.6 mm corner radius
• Negative rake 0° for stable cutting

Higher productivity through abrasion‑resistant grade and coating

The combination of the WKK20S grade and Tiger‑tec Silver coating delivers tangible gains in tool life when facing the abrasive tendencies of cast iron. The coated carbide chemistry is tuned to resist flank wear and withstand short, brittle chips typical of grey and nodular cast irons, so machining cycles run for longer without insert changes. This results in fewer tool interventions and improved process uptime for serial turning applications.

Predictable chip control and process security for consistent parts

The RK5 chipbreaker is specifically profiled for fracturing and evacuating chips from cast‑iron cuts, reducing the risk of built‑up edge and improving surface consistency. The negative rake (0°) geometry and square 90° form provide a stable cutting edge and predictable cutting forces, supporting steady feed and depth values and minimising tool vibration. The generous 1.6 mm corner radius increases edge robustness, which favours repeatable dimensional accuracy in batch production.

Practical fitment and system advantages for workshop use

The SNMA120416 platform with thickness 04 and size 12 mm plugs into common turning toolholders and permits fast reindexing for minimal downtime. The insert’s square shape offers four usable cutting corners, helping to lower tooling costs per produced part. As a coated, industry‑grade insert from Walter Tools, it is suitable where abrasion resistance and process reliability in cast‑iron turning are priorities; technical selection should consider machine rigidity and recommended cutting parameters for optimal life.

For robust cast‑iron turning with Walter Tools’ Tiger‑tec Silver grade, contact Metav Werkzeuge for ordering and technical advice at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number / SKU: SNMA120416-RK5-WKK20S-WALTER
• Product name: SNMA120416-RK5 WKK20S
• Product type: Indexable turning insert (square)
• Brand: Walter Tools

Facts

• Corner radius: 1.6 mm
• Insert size: 12 mm
• Thickness: 4 mm
• Free rake angle: 0°
• Tolerance class: M

Special features

• Grade: WKK20S
• Coating: Tiger‑tec Silver (coated carbide)
• Chipbreaker: RK5
• Geometry: Square 90°
• Application focus: Cast iron machining (K)

FAQ

What materials is this insert designed for?
The insert is formulated for machining cast iron materials; the WKK20S grade and Tiger‑tec Silver coating are optimised for abrasive, short‑chip behaviour typical of cast iron.

How does the RK5 chipbreaker influence performance?
The RK5 chipbreaker promotes predictable chip formation and evacuation in cast‑iron turning, reducing the risk of chip entanglement and improving surface quality.

Is the insert suitable for high‑feed or heavy roughing operations?
The square 90° form and 1.6 mm corner radius provide robustness for demanding turning tasks; selection of feeds and depths should align with machine rigidity and tooling parameters to exploit its strength.

How many cutting edges are available per insert?
The square design offers four usable cutting corners; indexing the insert restores a new cutting edge and extends overall tool life.

Can this insert be used in standard SNMA toolholders?
Yes, the SNMA120416 platform is compatible with SNMA‑type turning toolholders made for square inserts of this size.

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

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