CCMT120404-MK4 WKK20S WKK20S Wendeplatten - Walter Tools

Combining the Tiger·tec Silver coating with the WKK20S carbide grade and the MK4 chipbreaker ensures excellent wear resistance and controlled chip formation when machining cast iron; order the insert directly via Metav Werkzeuge or consult our specialists for application guidance.

CCMT120404-MK4 WKK20S turning insert — rhombic 80° geometry, Tiger·tec Silver, Walter Tools

The CCMT120404-MK4 WKK20S is a rhombic 80° indexable turning insert optimised for productive machining of cast iron components.

Tiger·tec Silver coating for wear resistance WKK20S grade tailored to cast iron Rhombus 80° for robust edge support MK4 chipbreaker for predictable chips

Increased wear resistance and consistent chip control for cast iron

The CCMT120404-MK4 WKK20S insert combines the Tiger·tec Silver coating with the WKK20S coated-carbide grade to resist abrasive wear typically encountered when machining cast iron. The MK4 chipbreaker promotes short, consistent chips that reduce interruption and facilitate automated chip evacuation. This technical combination supports longer tool life and predictable performance in cyclic production, translating to fewer tool changes and improved uptime on turning centres and gang-tool setups.

Stable geometry and precise edge conditions for reproducible results

The rhombic Rhombus 80° shape and the small 0.4 mm corner radius provide a balance between edge strength and cutting stability, while the 7° clearance helps maintain cutting engagement under interrupted cuts. The insert is produced to tolerance class M, size 12 with plate thickness code 04 and execution T, ensuring compatibility with standard CCMT holders and predictable seating in toolblocks. These geometric features reduce the risk of vibration and flank wear, supporting consistent dimensional accuracy across series production.

Practical benefits for production efficiency and process security

Designed for demanding foundry and workshop environments, this indexable insert supports high productivity through reliable edge life and controlled swarf behaviour. The coated-carbide construction and grade selection mean fewer insert changes and lower overall tooling consumption for cast-iron work. If additional technical data or application parameters are required for specific cutting speeds or depths of cut, contact Metav Werkzeuge for tailored recommendations; comprehensive advice is available by e‑mail at info@metav-werkzeuge.com or by phone at +49 2822 7131930.

For high-process security when machining cast iron with Walter Tools' Tiger·tec Silver inserts, contact Metav Werkzeuge for application-specific advice and stock information

Technical data

• Article number: CCMT120404-MK4-WKK20S-WALTER
• Designation: CCMT120404-MK4 WKK20S
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver
• Grade: WKK20S

Facts

• Clearance angle: 7°
• Corner radius: 0.4 mm
• Plate size: 12
• Thickness code: 04
• Plate form: Rhombus 80°
• Chipbreaker: MK4
• Tolerance class: M
• Execution: T

Special features

• Coating: Tiger·tec Silver (coated carbide)
• Material group: K (suitable for cast iron)
• Application focus: machining of cast iron materials
• Target benefits: stable edge, controlled chips, long tool life

FAQ

Which materials is this insert designed for? The insert is optimised for machining cast iron; the WKK20S grade and the Tiger·tec Silver coating provide enhanced wear resistance for abrasive grey and nodular cast irons.

What is the purpose of the MK4 chipbreaker? The MK4 chipbreaker on this turning insert promotes short, controlled chips that improve evacuation and reduce risk of entanglement during continuous turning operations.

How does the geometry influence performance? The Rhombus 80° form with a 0.4 mm corner radius and 7° clearance offers robust edge support and cutting stability, helping to maintain surface finish and dimensional repeatability.

Is this insert compatible with standard CCMT toolholders? Yes, the CCMT120404-MK4 geometry is intended for conventional CCMT holders; ensure holder clamping and seat condition match the tolerance class M for best results.

What process benefits can be expected in series production? Use of this insert typically yields longer tool life, fewer insert changes and more predictable machining cycles when working with cast iron, supporting improved overall equipment effectiveness.

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

Protected trademarks and trade names remain the property of their respective owners. Brand names and protected trademarks are mentioned for explanatory purposes only. There is no affiliation between our company and the named brands. The offered item is original, brand‑new merchandise from the manufacturer. Walter Tools is a registered trademark of Walter AG.