P4840P-1R-E57 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of coated carbide technology, an optimised chip former and broad material suitability to ensure productive, consistent drilling cycles; order directly via Metav Werkzeuge or contact their consultants for application advice.

P4840P-1R-E57 WKP25S — drilling/boring indexable insert for steel and cast iron | Walter Tools

P4840P-1R-E57 WKP25S is an indexable insert developed for productive drilling and reaming operations, optimised for both steel and cast iron under demanding machining conditions.

• Tiger·tec Silver coating technology
• Optimised chip former 1R‑E57
• Designed for steel and cast iron
• Built for productive drilling operations

Improved cycle times through optimised coating and geometry

The combination of the Tiger·tec Silver coating and a purpose-designed geometry delivers measurable improvements in cycle efficiency. The coated carbide grade ensures reduced wear at elevated temperatures, while the 1R‑E57 chip former promotes controlled chip breaking during through-hole and reaming passes. For machining centres and automated drilling cells, this results in fewer interruptions for chip clearing and a higher proportion of productive cutting time per shift.

Reliable performance across common ferrous materials

Engineered for the ISO material groups P and K, the insert offers application flexibility for both unalloyed and alloyed steel and a broad range of cast iron grades. The cutting grade WKP25S is a coated carbide designed to handle the typical heat and abrasive loading encountered when turning or drilling these materials. The result is repeatable hole quality and a consistent process window that supports predictable tool life and stable production planning.

Clear benefits for workshop productivity and tool management

By combining a robust coating system with a stable cutting edge, the insert reduces flank and crater wear, which simplifies tool-change intervals and inventory planning. The standardised designation and geometry allow straightforward indexable insert replacement and toolholder compatibility across common drilling systems. This supports cost-effective tool management and minimises downtime associated with unpredictable wear or poor hole integrity.

Application guidance and process advantages

The insert is particularly effective in drilling operations where chip evacuation and edge stability are critical. The optimised chip former reduces chip entanglement and supports uninterrupted coolant flow to the cutting zone, improving surface finish and dimensional stability of boreholes. For process engineers seeking consistent results, the insert delivers a balance of productivity and tool life that supports higher machine throughput without sacrificing hole accuracy.

Contact Metav Werkzeuge for application-specific recommendations on Walter Tools inserts and to check stock availability or lead times

Technical data

• Article number: P4840P-1R-E57-WKP25S-WALTER
• SKU: P4840P-1R-E57-WKP25S-WALTER
• Product type: Bohr-/Aufbohrwendeschneidplatte

Core data

• Designation: P4840P-1R-E57 WKP25S
• Chip former: 1R‑E57
• Material suitability: P (steel), K (cast iron)

Special features

• Series: Tiger·tec Silver
• Grade: WKP25S (coated carbide)
• Manufacturer: Walter Tools

FAQ

What materials can this insert machine?
The P4840P-1R-E57 WKP25S insert is suitable for ISO groups P and K, meaning it is intended for machining various steel grades and cast iron.

What is the role of the Tiger·tec Silver series?
The Tiger·tec Silver series provides a hard-wearing coating technology that improves high-temperature resistance and wear performance for the WKP25S grade during drilling operations.

Which chip former does this insert use and why does it matter?
The insert uses the 1R‑E57 chip former, which is designed to produce short, manageable chips in through-hole drilling and reaming, aiding coolant flow and chip evacuation.

Is the insert compatible with common drilling toolholders?
The insert designation follows standard indexable insert nomenclature and is compatible with holders specified for P4840P-1R-E57 geometries; toolholder compatibility should be confirmed against the holder catalogue.

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

The Walter AG (brand: Walter Tools) is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik Group. Protected trademarks and trade names are the property of their respective owners. Brand names are used solely for explanatory purposes. The offered item is an original, factory-new product of the manufacturer.