DCMT11T304-RK4 WKK20S Wendeplatten - Walter Tools

The reinforced carbide grade and Tiger‑tec Silver coating combine for extended tool life and consistent performance in abrasive cast iron turning; the RK4 chipbreaker and Rhombus 55° geometry ensure controlled chip formation and versatile engagement. Order this high‑performance insert directly via Metav Werkzeuge or consult the team for application advice.

DCMT11T304-RK4 WKK20S indexable turning insert for cast iron — Walter Tools, Tiger‑tec Silver, RK4

The DCMT11T304-RK4 WKK20S is a rhombic 55° indexable turning insert engineered for efficient machining of cast iron components in medium to heavy cutting conditions.

• Tiger‑tec Silver coating for enhanced wear resistance
• Optimised for cast iron machining
• Rhombic 55° geometry for versatile engagement
• RK4 chipbreaker for controlled chip formation

Increase productivity in cast iron turning with targeted wear resistance

The combination of a coated carbide substrate and the WKK20S grade from the Tiger‑tec Silver series delivers a balance between wear resistance and toughness that is particularly effective on abrasive cast iron. The result is a measurable reduction in flank wear growth over comparable grades, translating into fewer index changes and longer productive cycles. Emphasis on process efficiency and predictable tool life supports tighter planning and lower overall machining costs while maintaining consistent surface quality.

Coating and grade explained for reliable performance

The Tiger‑tec Silver technology denotes a multi‑layer coating system optimised for abrasive environments. In this case the selected grade was developed specifically for cast iron applications, where short, brittle chips and high abrasive wear dominate. The coated hardmetal construction improves thermal stability and edge retention under cyclic thermal loads. For engineers less familiar with coating terminology: the coating reduces abrasive wear and helps preserve the cutting edge, which means more consistent part tolerances across shifts.

Geometry and edge design for controlled chip behaviour

The Rhombus 55° insert form, combined with a 0.4 mm corner radius and a 7° clearance, provides a robust geometry that supports both interrupted cuts and continuous turning operations. The RK4 chipbreaker is tuned to produce short, manageable chips typical of cast iron, improving evacuation and reducing the risk of chip entanglement. The insert thickness designation T3 and tolerance class M indicate a stable seat in the toolholder and reproducible positioning for repeatable results in series production.

Application scope and dependable machining results

This insert is particularly suited to conventional and CNC lathe operations on cast iron components where consistent tool life and process reliability are required. The balance of abrasive resistance and sufficient toughness allows for both roughing passes and stable finishing when feed and speed are optimised. The Walter Tools development focus on stable edge life and good chip control contributes to fewer machine stops and a steady production flow, making the insert a practical choice for job shops and production environments alike.

Discuss machining parameters and secure the DCMT11T304-RK4 WKK20S insert for your cast iron operations with Metav Werkzeuge — contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930 for tailored recommendations and availability

Technical data

• Article number: DCMT11T304-RK4-WKK20S-WALTER
• Product label: Drehwendeschneidplatte DCMT11T304-RK4 WKK20S Walter Tools
• Manufacturer: Walter Tools
• Product type: Drehwendeschneidplatte
• Grade / sort: WKK20S
• Series: Tiger‑tec Silver

Facts

• Size designation: 11
• Thickness: T3
• Clearance angle: 7°
• Corner radius: 0.4 mm
• Tolerance class: M

Special features

• Coating technology: Tiger‑tec Silver
• Chipbreaker: RK4
• Geometry: Rhombus 55°
• Substrate: coated carbide (coated hardmetal)
• Application: cast iron machining

FAQ

What materials is this insert intended for?
The DCMT11T304-RK4 WKK20S insert from Walter Tools is developed primarily for cast iron machining and is optimised for abrasive, short‑chip conditions common to those materials.

Can the RK4 chipbreaker handle interrupted cuts?
Yes, the RK4 chipbreaker is designed to produce short, controllable chips and performs well under interrupted cutting typical in cast iron operations with the DCMT11T304-RK4 WKK20S insert.

How does the Tiger‑tec Silver coating improve tool life?
The Tiger‑tec Silver multi‑layer coating reduces abrasive wear and improves thermal stability at the cutting edge, leading to longer usable life of the DCMT11T304-RK4 WKK20S insert under abrasive cast iron conditions.

Which toolholder types are compatible with the DCMT11T304-RK4 insert?
The insert follows a standard DCMT indexable turning geometry; compatible toolholders for DCMT‑type inserts should be used to ensure correct seat and clamping for reliable performance.

What cutting edge radius and clearance should be considered for finishing passes?
The insert features a 0.4 mm corner radius and 7° clearance; for finer surface finishes consider reduced feed or selecting a smaller radius in the same insert family where available.

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

Protected trademarks and trade names are the property of their respective owners. Mention of brand names such as Walter Tools is for identification only; there is no affiliation between our company and the named brands. The offered item is an original, factory‑new product of the mentioned manufacturer.