DCMT11T308-RK4 WKK20S WKK20S Wendeplatten - Walter Tools

Combining the Tiger·tec Silver coating with the RK4 chipbreaker yields robust wear resistance and reliable chip control when machining cast iron; the rhombic 55° geometry and 0.8 mm corner radius contribute to consistent surface finishes. Order the insert directly via Metav Werkzeuge or consult our application specialists for process optimisation.

DCMT11T308-RK4 WKK20S indexable turning insert — Tiger·tec Silver for cast iron, Walter Tools

The DCMT11T308-RK4 WKK20S is an indexable turning insert designed for productive cast iron machining, offering a coated-carbide grade optimised for abrasive wear and short, breaking chips.

• Tiger·tec Silver coating for long tool life
• Optimised RK4 chipbreaker for cast iron
• Rhombic 55° geometry for versatile turning
• 0.8 mm corner radius for consistent surface finish

Higher uptime through abrasion-resistant grade and coating

The combination of the WKK20S grade and the Tiger·tec Silver coating focuses on extending tool life under abrasive conditions typical of cast iron. This coated carbide composition is engineered to resist abrasive wear while maintaining a stable cutting edge, which reduces the frequency of index changes and unscheduled interruptions. For production environments, this translates into improved process stability and predictable tool consumption, supporting efficient planning and lower overall machining costs.

Reliable chip control and improved surface quality

With the RK4 chipbreaker and a rhombic 55° form, the insert provides controlled chip formation on grey and nodular cast irons. The 7° relief angle and a 0.8 mm corner radius balance strength and fineness of finish: the geometry favours secure cutting with reduced vibration while the radius supports a consistent surface result without aggressive tool stress. These properties help maintain machining quality across varying cast iron batches and reduce rework.

Practical compatibility and simple integration into toolsets

The DCMT designation and T3 plate thickness make the insert compatible with common DCMT toolholders, allowing quick indexing and straightforward replacement. Its tolerance class M ensures interchangeability and repeatable positioning in clamping systems. By combining proven geometry with a universal chipbreaker for cast iron, the insert supports versatile turning operations while simplifying inventory: fewer grades are required to cover a broad range of cast-iron applications.

Secure process-stable Walter Tools inserts via Metav Werkzeuge — contact Metav Werkzeuge for tailored application advice and ordering at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical Data

• SKU: DCMT11T308-RK4-WKK20S-WALTER
• Article designation: DCMT11T308-RK4 WKK20S
• Product type: indexable turning insert
• Manufacturer: Walter Tools

Facts

• Size: 11
• Thickness: T3
• Relief angle: 7°
• Corner radius: 0.8 mm
• Geometry: Rhombic 55°
• Tolerance class: M

Special features

• Grade: WKK20S (Tiger·tec Silver)
• Coated carbide
• Chipbreaker: RK4
• Suitable for cast iron

FAQ

Is this insert suitable for machining cast iron?
Yes. The WKK20S grade with Tiger·tec Silver coating and the RK4 chipbreaker are specifically optimised for cast iron machining, addressing abrasive wear and short, breaking chips.

Which toolholders are compatible with this insert?
The insert follows the DCMT form and is intended for standard DCMT-compatible toolholders; indexing allows use of subsequent cutting edges to extend service life.

What surface quality can be expected with the 0.8 mm corner radius?
A 0.8 mm corner radius provides a balance between strength and finish, enabling a stable cutting edge that supports consistent surface quality on cast-iron workpieces.

Is the insert interchangeable in multi-insert tool assemblies?
Yes. The tolerance class M supports consistent positioning and repeatable clamping in compatible toolholder systems.

For which chip formation scenarios is the RK4 chipbreaker optimised?
The RK4 chipbreaker is designed to control chips typical of cast iron turning, promoting short, controllable chips and minimising chip-related disruptions.

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

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