SNMA190616-RK7 WKK20S Wendeplatten - Walter Tools

Combining the Tiger‑tec Silver grade with the RK7 chipbreaker and a square 90° geometry delivers reliable, wear‑resistant performance for cast‑iron turning. Benefit from stable cutting with a 0° negative rake and a 1.6 mm corner radius for consistent surface quality and extended tool life. Order directly via Metav Werkzeuge or consult their specialists for application advice.

SNMA190616-RK7 WKK20S – Square 90° turning insert (Tiger‑tec Silver) by Walter Tools

The SNMA190616-RK7 WKK20S is a square 90° turning insert designed for productive machining of cast iron, combining a coated carbide grade and an RK7 chipbreaker for controlled chip formation and improved process reliability.

• Tiger‑tec Silver coated for enhanced wear resistance
• RK7 chipbreaker tailored for cast iron machining
• Square 90° insert with 1.6 mm corner radius
• 0° negative rake for stable turning performance

Increase throughput with a wear‑resistant grade

The combination of the Tiger‑tec Silver coating and the WKK20S grade provides increased resistance to abrasive wear, which is particularly relevant when machining cast iron. Coated carbide grades reduce flank and crater wear, so the insert maintains cutting geometry longer and supports higher material removal rates. For production environments this means fewer tool changes and more predictable cycle times, improving overall plant efficiency.

Predictable chip control for safer turning

The integrated RK7 chipbreaker is engineered for the typical short and brittle chips of cast iron. Effective chip control reduces the risk of entanglement and machine downtime while contributing to consistent surface finish. Operators unfamiliar with chipbreaker terminology can regard this as a functional groove geometry that breaks and evacuates chips reliably, reducing manual intervention and improving process safety.

Stable geometry for consistent part quality

A square 90° form with a 1.6 mm corner radius and a 0° (negative) rake angle yields mechanical stability during interrupted cuts and heavy engagement. The rigid geometry supports dimensional control and repeatable part quality on tough turning operations. Where component tolerances and repeatability matter, this robustness translates into less scrap and more parts within specification.

Practical advantages in everyday production

The insert’s designation and tolerance class (M) signal compatibility with standard toolholders and predictable fitment in indexable tool systems. The SNMA190616-RK7 format keeps tool inventory straightforward while the coated WKK20S grade focuses the application on cast iron, avoiding the need for frequent grade swapping. This simplifies process planning and reduces setup complexity across batches.

Contact Metav Werkzeuge for tailored application recommendations and to source the Walter Tools SNMA190616-RK7 WKK20S insert for cast‑iron turning — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: SNMA190616-RK7-WKK20S-WALTER
• Name: Drehwendeschneidplatte SNMA190616-RK7 WKK20S
• Manufacturer: Walter Tools

Facts

• Shape: Square 90°
• Corner radius: 1.6 mm
• Insert size: 19 mm
• Thickness designation: 06
• Rake angle: 0° (negative)

Special features

• Grade / series: Tiger‑tec Silver; WKK20S
• Chipbreaker: RK7
• Material group suitability: Cast iron (K)
• Tolerance class: M
• Execution: A

FAQ

What materials is this insert suited for?
The SNMA190616-RK7 WKK20S is optimised for cast iron applications; the WKK20S grade and RK7 chipbreaker are tuned to the abrasive wear and short chip behaviour of cast materials.

How does the RK7 chipbreaker affect machining?
The RK7 chipbreaker on the Walter Tools insert shapes and fragments chips during turning, improving evacuation and reducing the chance of chip-related interruptions in cast‑iron production.

Is the insert compatible with standard toolholders?
Yes, the SNMA190616-RK7 form and tolerance class M are compatible with common indexable toolholders designed for SNMA‑type square inserts.

What benefits does the Tiger‑tec Silver coating provide?
The Tiger‑tec Silver coating on the WKK20S grade increases resistance to abrasive wear and helps maintain cutting geometry, extending tool life and stabilising cycle times in cast‑iron turning.

Can this insert be used for interrupted cuts?
The square 90° geometry combined with a 0° negative rake and a 1.6 mm corner radius provides mechanical stability suitable for many interrupted cutting scenarios in cast‑iron machining.

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

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