DCMT11T308-MK4 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of a Tiger·tec Silver cutting grade, the WKK20S wear-resistant coating technology and a reliable MK4 chipbreaker to achieve consistent, short-chip performance in cast-iron turning; order directly via Metav Werkzeuge or consult the team for application-specific recommendations.

DCMT11T308-MK4 WKK20S turning insert for cast iron by Walter Tools

The DCMT11T308-MK4 WKK20S is an indexable turning insert engineered for productive machining of cast iron components, offering a balanced geometry and a coated hardmetal grade optimised for abrasive, short-breaking chips.

• Tiger·tec Silver coating technology
• Grade WKK20S optimised for cast iron
• MK4 chipbreaker for reliable short chips
• Rhombic 55° shape with 0.8 mm nose radius

Improved process stability for cast-iron turning

The coated hardmetal grade WKK20S, part of the Tiger·tec Silver series, is formulated to resist abrasive wear typical of cast-iron materials. This insert delivers consistent edge life under interrupted cuts and varying machine conditions, reducing unplanned tool changes and increasing uptime. The combination of a robust coating and a geometry tuned for chip management provides measurable productivity gains in serial and single-part production alike.

Geometry and chip control that reduce downtime

A Rhombic 55° shape with a 0.8 mm nose radius and the MK4 chipbreaking geometry ensures short, controlled chips during turning operations. The insert’s 7° clearance angle supports stable cutting forces and predictable surface finish. These geometric choices translate into fewer chip-related disturbances, improved operator safety and reduced cleaning times at the end of a shift.

Practical benefits from a technical perspective

The insert format DCMT11T308-MK4 combines a compact size with a T3 plate thickness to suit a wide range of tool holders and turning tasks on cast iron. The coated hardmetal sortation emphasises wear resistance over extreme toughness, which is appropriate for the brittle, abrasive nature of cast materials. As a result, the cutting tool contributes to lower overall tooling costs by extending useful cutting life per edge.

Application notes and material compatibility

Designed specifically for cast-iron machining (ISO group K), the insert is not targeted at stainless or carbon steels; its WKK20S composition addresses the common needs of foundry and mould industries where short, breaking chips and abrasive wear dominate. When matched with appropriate feeds and speeds, the insert enables stable surface quality and repeatable component tolerances, supporting lean production workflows.

For reliable cast-iron performance choose Walter Tools turning inserts and contact Metav Werkzeuge for tailored cutting data or application advice via info@metav-werkzeuge.com or by phone at +49 2822 7131930

Technical data

• SKU: DCMT11T308-MK4-WKK20S-WALTER
• Article designation: DCMT11T308-MK4 WKK20S
• Product type: Drehwendeschneidplatte (turning insert)
• Manufacturer: Walter Tools

Facts

• Series: Tiger·tec Silver
• Grade: WKK20S
• Clearance angle: 7°
• Nose radius: 0.8 mm
• Insert form: Rhombic 55°
• Insert size: 11
• Chipbreaker: MK4
• Plate thickness: T3
• Tolerance class: M

Special features

• Coated hardmetal grade optimised for cast iron
• Short-chip control with MK4 geometry
• Suitable for ISO group K (cast iron)
• Robust edge behaviour for interrupted cuts
• Designed for standard indexable turning holders

FAQ

What materials is this insert suitable for?
The insert is formulated for cast-iron machining; the WKK20S grade and Tiger·tec Silver technology are optimised for ISO group K materials and abrasive, short-chip conditions.

How does the MK4 chipbreaker affect performance?
The MK4 chipbreaker produces short, controlled chips that reduce entanglement and improve surface finish when turning cast iron with the DCMT11T308-MK4 WKK20S insert.

Which insert geometry ensures stable cutting forces?
The Rhombic 55° shape combined with a 0.8 mm nose radius and 7° clearance angle provides predictable cutting forces and consistent component tolerances in turning applications.

Is this insert suitable for heavy interrupted cuts?
Yes; the coated hardmetal grade and edge design of the insert are intended to withstand the abrasive nature of cast iron and perform reliably under interrupted cutting typical in foundry-related work.

How should the insert be specified when ordering?
Order using the SKU DCMT11T308-MK4-WKK20S-WALTER or the designation DCMT11T308-MK4 WKK20S to ensure the correct grade, chipbreaker and geometry are supplied.

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

Protected trademarks and trade names are the property of their respective owners. Brand names are mentioned for explanation purposes only; there is no affiliation between our company and the named manufacturers. The offered item is an original, unused product from the stated manufacturer.