CCMT120408-MK4 WKK20S WKK20S Wendeplatten - Walter Tools

High wear resistance and reliable chip control from the Tiger·tec Silver technology combined with the WKK20S grade make this insert a dependable choice for abrasive cast iron work. The MK4 chipbreaker, 7° relief and 0.8 mm corner radius deliver stable cutting and consistent surface quality. Order the CCMT120408-MK4 WKK20S directly via Metav Werkzeuge or ask our consultants if needed.

CCMT120408-MK4 WKK20S Drilling/bore and turning indexable insert, Tiger·tec Silver – Walter Tools

The CCMT120408-MK4 WKK20S is an indexable insert optimised for machining cast iron, pairing a robust Tiger·tec Silver coating with a MK4 chipbreaker for stable chip formation and repeatable results.

• Tiger·tec Silver coating for wear resistance
• Grade WKK20S tuned for cast iron
• MK4 chipbreaker for stable chip control
• Rhombic 80° shape, 0.8 mm corner radius

Consistent performance for abrasive cast iron applications

The combination of a coated carbide grade (WKK20S) and Tiger·tec Silver technology provides enhanced resistance against the abrasive wear typical of cast iron machining. This insert is tailored to handle short, breaking chips and the high abrasion commonly encountered when turning or boring cast components. The specified geometry supports reliable cutting action and reduces unexpected tool changes, which helps maintain a steady production flow and lowers total machining downtime.

Precision geometry for process security and surface quality

With a Rhombic 80° form, 7° relief and a 0.8 mm corner radius, the insert offers a balanced mix of robustness and edge strength. These characteristics improve tool life under interrupted cuts and enhance dimensional stability during finishing passes. The MK4 chipbreaker assists in controlled chip segmentation, reducing the risk of built-up edge and promoting a better surface finish on cast iron parts. The result is greater process security and predictable component quality.

Integration into machining operations and tooling systems

The CCMT ISO designation ensures compatibility with standard CCMT toolholders and turning systems, simplifying tool inventory and tool-change procedures. The insert’s measured geometry and WKK20S grade enable consistent cycle times for serial production of cast parts and make it suitable for both roughing and semi-finishing strategies where chip control and wear resistance are priorities. For tailored cutting parameters or to confirm fit with specific tool carriers, the technical team at Metav Werkzeuge can provide practical guidance.

For a technical consultation or to arrange supply of the Walter Tools CCMT120408-MK4 WKK20S, contact Metav Werkzeuge via info@metav-werkzeuge.com or phone +49 2822 7131930 to discuss cutting data and delivery options.

Technical data

• Article number: CCMT120408-MK4-WKK20S-WALTER
• Manufacturer: Walter Tools
• Designation: CCMT120408-MK4 WKK20S
• Series: Tiger·tec Silver

Numbers / Core technical data

• Relief angle: 7°
• Corner radius: 0.8 mm
• Shape: Rhombic 80°
• Plate size: 12
• Thickness designation: 04
• Tolerance class: M

Special features / Applications

• Grade: WKK20S (coated carbide)
• Chipbreaker: MK4
• Suitable for: Cast iron (ISO K)
• Coating technology: Tiger·tec Silver
• Execution: T
• Product type: Drilling/bore and turning indexable insert
• SKU: CCMT120408-MK4-WKK20S-WALTER

FAQ

Which materials is this insert intended for?
The CCMT120408-MK4 WKK20S is designed primarily for cast iron (ISO K); the WKK20S grade and Tiger·tec Silver coating address the abrasive wear and frequent short-chip behaviour of these materials.

What benefits does the MK4 chipbreaker provide?
The MK4 chipbreaker promotes predictable chip segmentation and evacuation when machining cast iron, improving surface finish and reducing the likelihood of built-up edge on the cutting zone.

How do the geometry values affect machining?
The Rhombic 80° form with 7° relief and a 0.8 mm corner radius balances edge strength and cutting stability, making it suitable for interrupted cuts and contributing to consistent dimensional accuracy.

Is the insert compatible with standard CCMT toolholders?
Yes; the CCMT120408 designation conforms to common CCMT indexable insert standards and can be mounted in compatible CCMT pockets, facilitating straightforward integration into existing tooling systems.

What does the WKK20S grade signify?
WKK20S is a Walter Tools coated carbide grade formulated for cast iron applications; it emphasises wear resistance and stable performance under abrasive cutting conditions.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected trademarks are mentioned for explanatory purposes only. There is no connection between our company and the mentioned brands. The offered article is original, factory-new goods of the manufacturer Walter Tools. The Walter brand is cited where appropriate.