DNMA150612-RK7 WKK10S Wendeplatten - Walter Tools

The coated carbide grade WKK10S in the Tiger·tec Silver series combines stable chip formation with robust wear resistance for reliable machining of cast iron; paired with the RK7 chipbreaker and a rhombic 55° geometry, this insert supports consistent surface quality and predictable tool life. Order the insert directly via Metav Werkzeuge or consult our specialists for application-specific recommendations.

DNMA150612-RK7 WKK10S turning insert for cast iron — Walter Tools (Tiger·tec Silver)

The DNMA150612-RK7 WKK10S is a rhombic 55° indexable turning insert engineered for efficient, repeatable machining of cast iron components, offering a coated-carbide grade optimised for abrasive materials.

• Tiger·tec Silver coating for long life
• RK7 chipbreaker for controlled chips
• Rhombic 55° geometry for versatile turning

High-performance machining for cast iron with predictable results

The coated-carbide grade WKK10S within the Tiger·tec Silver family is tailored to the demands of cast iron (ISO group K). Its formulation focuses on abrasion resistance and coping with the short, brittle chips typical of grey and nodular cast irons. As a result, the insert delivers stable chip formation and extended edge life, which reduces the frequency of index changes and supports throughput in production turning operations. This technical resilience translates into a lower cost per part and fewer unplanned interruptions during batch runs.

Geometry and chip control for cleaner finishes and process security

The rhombic 55° shape and the RK7 chipbreaker form a combination that balances versatility and chip control for a range of turning tasks. The insert’s corner radius 1.2 mm contributes to robust cutting edge strength for interrupted cuts, while the 0° negative rake promotes a secure seat in the toolholder and predictable cutting forces. Together these aspects result in consistent surface quality and simplified tool-setting routines, supporting reliable cycle times and repeatable results across similar workpieces.

Coating technology and material match for extended tool life

Tiger·tec Silver coating technology provides a protective multilayer that reduces adhesive and abrasive wear when machining abrasive cast irons. The grade is specified as a coated carbide type, optimised to maintain a stable cutting edge under thermal and mechanical loads typical of cast-iron turning. For shops seeking improved productivity, the coating-grade pairing offers the moral and technical assurance of reduced downtime and sustained performance over longer tool indexes.

Integration into production and practical handling notes

The insert is supplied in the DNMA150612-RK7 outline and fits toolholders designed for DNMA-style rhombic inserts; thickness and tolerances follow industrial norms for this format. Given its focus on cast-iron applications, the insert reduces the need for excessive process tuning: machining parameters can be standardised across batches, increasing operational efficiency. For mixed-material environments, selection of an alternative grade may be advised, but within cast-iron programmes this variant supports stable, high-quality results with predictable regrinding or indexing intervals.

For machining tasks requiring robust performance in cast iron, request the Walter Tools DNMA150612-RK7 WKK10S through Metav Werkzeuge — technical advice and ordering: info@metav-werkzeuge.com or +49 2822 7131930.

Technical data

• SKU: DNMA150612-RK7-WKK10S-WALTER
• Label: Drehwendeschneidplatte DNMA150612-RK7 WKK10S Walter Tools
• Manufacturer: Walter Tools

Facts

• Size: 15 mm
• Corner radius: 1.2 mm
• Thickness code: 06
• Free angle: 0° (negative)
• Plate form: Rhombus 55°
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK10S (coated carbide)
• Chipbreaker: RK7
• Application: Cast iron (ISO group K)
• Material group designation: K (cast iron)

FAQ

What materials is this insert intended for?
The DNMA150612-RK7 WKK10S is designed primarily for cast iron applications (ISO group K), where its Tiger·tec Silver coating and WKK10S grade offer abrasion-resistant performance.

How does the RK7 chipbreaker affect machining?
The RK7 chipbreaker on this insert promotes controlled chip formation and reliable evacuation, assisting in achieving consistent surface finishes and reducing the risk of chip-related interruptions.

Is the insert suitable for interrupted cuts?
Yes. The rhombic 55° geometry combined with a corner radius of 1.2 mm and the negative free angle provides enhanced edge strength for interrupted and heavy-duty turning operations.

Which toolholders are compatible with this insert form?
Toolholders specified for DNMA-format rhombic 55° inserts accommodate this item; ensure the holder supports negative-rake inserts and the DNMA seating geometry for correct clamping.

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

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