CCMT120404-MW4 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of reliable wear protection, optimised chip control and geometry tailored for cast-iron turning to keep cycles consistent and tool changes predictable; order the inserts directly via Metav Werkzeuge or request application support from our consultants.

CCMT120404-MW4 WKK20S turning insert — Tiger·tec Silver, for cast iron, Walter Tools

CCMT120404-MW4 WKK20S is a rhombic indexable turning insert designed for efficient machining of cast-iron workpieces, combining Tiger·tec Silver coating with a dedicated MW4 chipbreaker.

Tiger·tec Silver coating for wear resistance
Optimised MW4 chipbreaker for cast iron
Rhombic 80° geometry, 0.4 mm corner radius

High wear resistance for productive cast-iron turning

The combination of the Tiger·tec Silver coating and the WKK20S grade delivers strong wear resistance under the abrasive conditions typical of cast-iron machining. This insert is engineered to tolerate the high, intermittent loads and frequent brittle chips associated with cast materials, so tool life is extended and the need for unscheduled tool changes is reduced. The coated carbide substrate minimises flank and crater wear, providing predictable performance in repetitive turning operations.

Consistent chip control and process stability

The MW4 chipbreaker is optimised for short, controllable chip formation when machining cast iron, reducing the risk of chip entanglement and improving surface finish consistency. The rhombic 80° shape supports robust cutting edge engagement and favourable cutting forces, resulting in stable turning even at moderate feed rates. Improved chip handling contributes to cleaner setups and reduces the time spent on chip disposal and secondary operations.

Geometry tuned for reliable edge life and repeatability

A 0.4 mm corner radius and a relief angle of 7° combine to balance strength and edge sharpness, enabling both higher material removal rates and acceptable surface quality. The insert’s tolerance class M supports reliable seating and repeatable indexing in standard toolholders, which simplifies tool management and inventory control. For workshops focused on throughput, this geometry helps maintain consistent cycle times and reduces process variability.

Application benefits and integration into the production line

Designed primarily for cast-iron applications, the insert suits a range of turning tasks from roughing to medium finishing where controlled chipbreaking and wear resistance are priorities. Integrating these inserts into a production line can reduce downtime for tool changes and improve overall machine utilisation. When paired with a stable toolholder and suitable cutting parameters, the result is a measurable improvement in component quality and process reliability.

Contact Metav Werkzeuge for application advice and availability of Walter Tools CCMT120404-MW4 WKK20S turning inserts; email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss the best grade and cutting data for specific cast-iron grades

Technical data

• Article number: CCMT120404-MW4-WKK20S-WALTER
• Type: Turning insert
• Designation: CCMT120404-MW4 WKK20S

Facts

• Relief angle: 7°
• Corner radius: 0.4 mm
• Inscribed circle/size: 12
• Thickness: 04

Special features

• Coating: Tiger·tec Silver
• Grade: WKK20S
• Chipbreaker: MW4
• Geometry: Rhombus 80°
• Suitable for: Cast iron (K)
• Tolerance class: M
• Series: Tiger-tec Silver
• Manufacturer: Walter Tools

FAQ

What materials is this insert suitable for?
The CCMT120404-MW4 WKK20S turning insert is specifically suited for cast iron machining and uses the Tiger·tec Silver-coated WKK20S grade for improved wear resistance on abrasive cast materials.

How does the MW4 chipbreaker help in production?
The MW4 chipbreaker on this Walter Tools insert ensures short, manageable chips when turning cast iron, which contributes to safer chip control and fewer interruptions in automated or manual operations.

What benefits does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating on the WKK20S grade enhances surface hardness and thermal stability, improving tool life and maintaining edge integrity during repetitive cast-iron turning cycles.

Is this insert compatible with standard toolholders?
The rhombic 80° geometry and tolerance class M support secure seating and repeatable indexing in commonly used turning toolholders suitable for CCMT-style inserts.

Which production tasks are best suited to this insert?
This Walter Tools insert performs well in roughing and medium-finishing operations on cast-iron components where controlled chipbreaking and extended edge life are required.

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

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