SCMW120412-RK6 WKK20S Wendeplatten - Walter Tools

High-performance Tiger·tec Silver grade WKK20S combined with the RK6 chipbreaker ensures dependable, efficient cast iron machining and consistent chip control; benefit from the robust square 90° geometry and order via Metav Werkzeuge or consult the team for application advice.

SCMW120412-RK6 WKK20S square 90° indexable turning insert, Tiger·tec Silver – Walter Tools

The SCMW120412-RK6 WKK20S is a square 90° indexable turning insert designed for productive machining of cast iron components in industrial turning operations.

• Tiger·tec Silver coated carbide grade WKK20S
• Optimised for cast iron machining (ISO group K)
• RK6 chipbreaker for controlled chip formation
• Square 90° insert; 12 mm size; 1.2 mm corner radius

Reliable productivity for abrasive cast iron work

The Tiger·tec Silver WKK20S grade is a coated carbide developed for the abrasive nature of cast iron and for reliable component batch runs. The combination of coating technology and substrate results in stable wear behaviour and predictable tool life, which supports higher process reliability and fewer tool changes. For production environments that demand consistent output, this insert reduces variability at the cutting edge and helps maintain machining cadence.

Controlled chips and sustained edge stability

With the RK6 chipbreaker and the square 90° geometry, the insert promotes short, well-controlled chips typical for cast iron machining. Controlled chip formation minimises interruptions and lowers the risk of built-up edge, improving surface quality and operator safety. The insert’s flank and rake geometry are configured to channel chips away from the cutting zone, thereby supporting uninterrupted cycle times and easier chip evacuation in enclosed or automated turning cells.

Geometry tuned for flexibility and secure seating

The insert’s square 90° form, 1.2 mm corner radius and 12 mm size deliver versatile cutting conditions for both roughing and semi-finishing passes. The moderate corner radius balances strength and surface finish, enabling stable cuts at typical cast iron feeds. The 7° relief angle assists in reducing rubbing on the flank while preserving edge strength, which is advantageous when alternating between heavy and conservative cuts in a single production setup.

Application advantages and shopfloor integration

Designed primarily for ISO group K materials, the coated carbide grade and chipbreaker combination provide an economical route to quality cast iron components. The insert supports process consistency, fewer set-up adjustments and longer intervals between indexings. For complex requirements or to confirm suitability for a specific machine or operation, Metav Werkzeuge offers technical consultation and application data to align cutting parameters with production goals.

Secure high-performance cast iron machining with Walter Tools' Tiger·tec Silver inserts — contact Metav Werkzeuge for technical advice via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• SKU: SCMW120412-RK6-WKK20S-WALTER
• Article: SCMW120412-RK6 WKK20S
• Product type: turning insert
• Brand: Walter Tools
• Series: Tiger-tec Silver

Facts

• Relief angle: 7°
• Corner radius: 1.2 mm
• Insert size: 12 mm
• Plate thickness: 04
• Tolerance class: M

Special features

• Grade: WKK20S (coated carbide)
• Chipbreaker: RK6
• Insert form: square 90°
• Application: cast iron (ISO group K)
• Execution: W

FAQ

What materials is this insert suitable for? This insert is configured for machining cast iron (ISO group K) and the WKK20S grade is optimised for abrasive cast iron work.

Which chipbreaker is fitted and what does it deliver? The RK6 chipbreaker provides controlled, short chip formation for safer, more consistent machining with improved surface results when turning cast iron.

What are the key geometry specifications of the insert? The insert is a square 90° form with a 1.2 mm corner radius, 12 mm size and a 7° relief angle; these dimensions are tailored for flexible roughing and semi-finishing.

Is this an original Walter Tools product and what is the SKU? Yes, the item is an original Walter Tools turning insert; SKU SCMW120412-RK6-WKK20S-WALTER identifies the exact article.

When should the WKK20S grade be chosen over other grades? Choose WKK20S when the primary workpiece material is cast iron and the priority is consistent wear behaviour, controlled chips and reliable tool life in production turning.

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

Protected trademarks and trade names are the property of their respective owners. Brand names such as Walter Tools are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The offered item is an original, factory-new product of the manufacturer.