TNMA220416-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Combine high wear resistance with dependable chip control and a geometry engineered for stable turning of cast iron; the result is efficient, repeatable machining with reduced downtime. Order the insert directly via Metav Werkzeuge or contact our consultants for application-specific advice.

TNMA220416-RK5 WKK20S – Triangular turning insert, Tiger·tec Silver coating by Walter Tools

A high-performance triangular turning insert, TNMA220416-RK5 WKK20S, engineered for productive machining of cast iron components.

• Tiger·tec Silver coating for high wear resistance
• Optimised RK5 chipbreaker for cast iron chips
• Triangular 60° form with 1.6 mm corner radius
• 0° negative rake for stable cutting performance

Increase productivity on abrasive cast-iron jobs

The combination of the Tiger·tec Silver coating and the grade WKK20S delivers notable wear resistance under the intermittent, abrasive conditions typical of cast-iron turning. The insert is intended for applications where controlled, often short and brittle chips occur; the coating extends tool life while maintaining consistent cutting performance. As a consequence, cycle times can be reduced and insert change frequency decreased, supporting a smoother production flow for series turning operations.

Stable geometry for repeatable surface quality

With a 60° triangular form, a 1.6 mm corner radius and a 0° negative rake, the insert provides mechanical robustness and predictable engagement with the workpiece. These geometric choices promote stable cutting forces and reduced vibration, which in turn help to maintain dimensional accuracy and surface finish across repeated passes. The execution class A and tolerance class M indicate consistent manufacturing quality, suitable for customers who require reproducible results in serial machining.

Chip control and coating that cut downtime

The RK5 chipbreaker is specifically optimised for cast-iron chip formation, enabling reliable chip control even under interrupted cuts. Combined with the coated hardmetal substrate of the WKK20S grade, this indexable insert reduces the risk of built-up edge and unexpected wear. The net effect is fewer process interruptions, less manual chip handling, and improved machining uptime for workshop environments where cast iron is a primary material.

Adaptability and practical application notes

Designed for the machining of cast iron (ISO 513 group K), this insert belongs to the Tiger·tec Silver series and suits a range of turning operations where abrasion and short-chip behaviour dominate. The triangular layout allows three usable cutting edges per index, providing economical edge utilisation. For application-specific parameter selection and to verify compatibility with toolholders and turning cycles, Metav Werkzeuge can provide tailored recommendations and cutting data sheets.

For specific application advice on Walter Tools' Tiger·tec Silver inserts and to arrange the optimal insert selection via Metav Werkzeuge, contact info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• SKU: TNMA220416-RK5-WKK20S-WALTER
• Label: Drehwendeschneidplatte TNMA220416-RK5 WKK20S Walter Tools
• Product type: Drehwendeschneidplatte
• Series: Tiger-tec Silver
• Grade: WKK20S
• Execution: A

Facts

• Size: 22 mm
• Thickness code: 04
• Corner radius: 1.6 mm
• Plate form: 60° triangle
• Free rake angle: 0° (negative)
• Chipbreaker: RK5
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Material: Coated hardmetal (carbide)
• Application: Cast iron machining (ISO group K)
• Insert designation: TNMA220416-RK5 WKK20S
• Suitable for abrasive, short-chip conditions
• Three cutting edges per triangular insert

FAQ

What materials is this insert designed for?
The TNMA220416-RK5 WKK20S is optimised for cast iron (ISO group K) and engineered to handle abrasive, short-chip conditions typical of such materials.

How does the RK5 chipbreaker affect machining?
The RK5 chipbreaker promotes controlled, short chip formation in cast iron, improving chip evacuation and reducing the risk of edge damage during interrupted cuts.

What benefits does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating on the WKK20S grade increases surface hardness and thermal resistance, which extends tool life and maintains cutting performance under abrasive loads.

How many cutting edges are available per insert?
The triangular 60° form offers three usable cutting edges per insert, enabling economical edge use and straightforward indexing when wear occurs.

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

Protected trademarks and trade names are the property of their respective owners. Brand names, including Walter Tools, are mentioned for explanatory purposes only. There is no affiliation between Metav Werkzeuge and the named brands. The offered item is original, factory-new goods of Walter Tools.