P4840P-8R-E57 WKP25S Wendeplatten - Walter Tools

High machining performance and consistent chip control are delivered by the Tiger·tec Silver grade combined with the WKP25S substrate and the 8R-E57 chipbreaker, making this insert a productive choice for drilling and reaming in steel and cast iron. Order the P4840P-8R-E57 WKP25S insert directly via Metav Werkzeuge or ask the consultants for application support.

P4840P-8R-E57 WKP25S drilling/reaming indexable insert by Walter Tools — Tiger·tec Silver, chipbreaker 8R-E57

P4840P-8R-E57 WKP25S is an indexable insert for holemaking operations, optimised for drilling and reaming in steel and cast iron and designed to improve process stability

• Tiger·tec Silver coating technology
• Suitable for Steel and Cast iron
• Optimised chipbreaker 8R-E57
• Designed for drilling and reaming inserts

Consistent productivity in steel and cast iron

The Tiger·tec Silver grade and the WKP25S substrate combine to offer improved wear resistance and dimensional stability under cyclic loads. As an indexable insert for holemaking, the geometry is tuned to the thermal and mechanical demands of machining steel and cast iron, which reduces flank wear and maintains tool diameter accuracy over longer tool life. The result is fewer tool changes and a steadier machining process, which supports higher throughput in production environments.

Reduced downtime through controlled chip formation

The integrated 8R-E57 chipbreaker provides reliable chip control during drilling and reaming, preventing long, stringy chips that can entangle or damage the toolholder. Stable chip evacuation leads to shorter cycle times and less machine stoppage for clearing swarf. In practice, this means more dependable runs on batch jobs and a lower risk of surface damage to the workpiece, improving overall productivity and process reliability on medium- to high-volume programmes.

Robust grade and repeatable results

Manufactured by a well-known brand in precision tooling, the insert’s material and coating are developed to withstand the abrasive and thermal conditions typical of holemaking in automotive, engineering and general fabrication shops. The result is consistent surface finish and reproducible hole quality across batches. The insert’s specification and geometry support precise size control and contribute to predictable tool life, enabling planners to schedule maintenance with greater confidence.

For application-specific selection and to request compatible holders or matching grades for specialised materials, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 — Metav Werkzeuge will advise on the right Walter Tools solution for the task.

Technical data

• Article number: P4840P-8R-E57-WKP25S-WALTER
• SKU: P4840P-8R-E57-WKP25S-WALTER
• Designation: P4840P-8R-E57 WKP25S

Facts

• Material designation: P / K
• Suitable for: Steel; Cast iron

Special features

• Series: Tiger-tec Silver
• Grade: WKP25S
• Chipbreaker: 8R-E57
• Product type: Drill/reaming indexable insert
• Manufacturer: Walter Tools

FAQ

What materials is this insert suitable for? The P4840P-8R-E57 WKP25S insert is specified for machining steel and cast iron and is set up to manage the typical heat and chip behaviour of those groups.

What does the 8R-E57 chipbreaker provide? The 8R-E57 chipbreaker on this Walter Tools insert promotes consistent chip control, reducing swarf issues and improving cycle stability during drilling and reaming.

Which series and grade does this insert belong to? This insert is part of the Tiger·tec Silver series and is supplied in the WKP25S grade, offering a balance of wear resistance and toughness for holemaking.

Is this product suitable for production environments? Yes; the geometry and grade of the P4840P-8R-E57 WKP25S are aimed at productive machining with reduced tool changes and reliable hole quality.

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

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