DNMA150612-RK5 WKK20S WKK20S Wendeplatten - Walter Tools

Benefit from high wear resistance, optimised chip control and a stable cutting geometry for reliable cast iron turning. Order the insert directly via Metav Werkzeuge or contact our consultants for application-specific advice.

DNMA150612-RK5 WKK20S turning insert — Tiger·tec Silver grade, for cast iron by Walter Tools

The DNMA150612-RK5 WKK20S is a rhombic 55° turning insert designed for efficient machining of cast iron, combining a robust coating and a short-chip breaker for productive turning operations

• High wear resistance thanks to Tiger·tec Silver coating
• RK5 chipbreaker for controlled, short chips
• Rhombus 55° form for versatile turning operations
• Optimised for cast iron machining

Consistent performance on abrasive cast iron

The combination of Tiger·tec Silver coating and the WKK20S grade delivers high wear resistance specifically tuned for abrasive cast iron. The coated cemented carbide composition mitigates flank wear and thermal softening, which translates into extended tool life and fewer index changes during batch runs. By addressing the typical short, brittle chips of cast materials, the insert reduces downtime for chip clearing and supports a steadier production rhythm. This technical alignment of coating and carbide grade results in a measurable improvement in process stability when turning grey or nodular cast irons.

Geometry that improves surface quality and productivity

A Rhombus 55° cutting geometry together with the RK5 chipbreaker and a corner radius 1,2 mm form a cutting package that balances strength and finish. The 0° (negativ) relief provides a secure cutting edge under interrupted cuts and heavy radial engagement, while the specified plate thickness 06 contributes to rigidity in the toolholder. These geometric choices lead to reduced vibration, a more consistent cutting force and improved surface finish on the workpiece. For planners and operators, this means fewer rework cycles and better adherence to tight tolerances in serial production.

Easy integration and predictable tool life in the workshop

Designed as an indexable insert for standard turning toolholders, the insert’s tolerance class M ensures repeatable seating and accurate positioning in the clamping system. The RK5 chip control supports automated machining cells by producing short, controllable chips that lower the risk of entanglement and machine stoppages. As an insert intended for cast iron applications, it suits both manual lathe work and CNC turning centres, offering an economical option where consistent component quality and dependable cycle times are required. The product SKU and series information facilitate straightforward stock management and reordering.

Contact Metav Werkzeuge for application guidance on Walter Tools Tiger·tec Silver inserts or request a recommendation tailored to cast iron turning with the DNMA150612-RK5 WKK20S

Technical data

• Article number: DNMA150612-RK5-WK K20S-WALTER
• SKU: DNMA150612-RK5-WKK20S-WALTER
• Product type: Drehwendeschneidplatte (turning insert)
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver
• Grade: WKK20S
• Execution: A

Facts

• Shape: Rhombus 55°
• Size: 15
• Thickness: 06
• Corner radius: 1,2 mm
• Relief angle: 0° (negativ)
• Chipbreaker: RK5
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver (coated carbide)
• Material classification: K (cast iron)
• Suitable application: cast iron machining
• Designed for short, brittle chips typical of cast materials

FAQ

What materials is this insert suitable for?
The DNMA150612-RK5 WKK20S is specifically optimised for cast iron machining, as indicated by the WKK20S grade and the RK5 chipbreaker.

How does the Tiger·tec Silver coating benefit production?
The Tiger·tec Silver coating on the WKK20S grade increases wear resistance and thermal stability, which improves tool life and process reliability in cast iron turning.

What does the RK5 chipbreaker provide?
The RK5 chipbreaker produces short, controlled chips for safer chip management and reduced interruption in automated and manual turning operations.

Is the insert suitable for interrupted cuts?
Yes. The 0° (negativ) relief and the robust geometry make the insert resilient under interrupted cutting and heavy radial engagement.

Which toolholders are compatible with this insert form?
The Rhombus 55° form and the insert dimensions correspond to standard turning toolholders designed for DNMA-style inserts.

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

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