P4840P-7R-E57 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, the WKP25S carbide grade and the 7R‑E57 chipbreaker for reliable chip control and extended tool life; order directly via Metav Werkzeuge or request application advice from our consultants.

P4840P-7R-E57 WKP25S — indexable drill/boring insert, Tiger·tec Silver (Walter Tools)

The P4840P-7R-E57 WKP25S is an indexable insert designed for drilling and boring operations, optimised for machining steel and cast iron in industrial turning centres and machining centres.

• Tiger·tec Silver coating for wear resistance
• Optimised chipbreaker 7R‑E57 for stable chips
• Suitable for steel and cast iron
• Indexable design for drilling and boring

High-performance coating and material compatibility

The Tiger·tec Silver coating combined with the WKP25S grade provides enhanced wear resistance and consistent edge stability, translating into longer service intervals and fewer tool changes. Engineered for the ISO P and K groups, this insert is tailored to the heat generation and chip forms typical of steel and cast iron. The coating reduces adhesive and abrasive wear, which means improved tool life and predictable performance when cutting unalloyed, alloyed steels and a broad range of cast materials.

Precise chip control for fewer process interruptions

The integrated 7R‑E57 chipbreaker is designed to produce short, controllable chips during drilling and bore enlargement, reducing the risk of chip entanglement and machine stoppages. By shaping how the chip forms and breaks, the insert supports a consistent surface finish and minimises secondary operations. For production environments, this chip management reduces downtime and contributes to steady cycle times — a clear advantage for serial machining tasks.

Efficient application in drilling and boring cycles

As an indexable insert for drilling/boring toolholders, the component allows quick indexing of fresh cutting edges without changing the holder, supporting continuous operation and faster tool set-up. The geometry and coated carbide construction help maintain cutting edge integrity under typical bore-making loads, improving process stability and repeatability. Where catalogue geometries and machine setups vary, the insert’s characteristics support flexible application across common industrial machining scenarios.

Discuss application requirements with Metav Werkzeuge to secure the Tiger·tec Silver WKP25S insert for reliable machining or request detailed technical clarification via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: P4840P-7R-E57-WKP25S-WALTER
• Designation: P4840P-7R-E57 WKP25S
• Type: Bohr-/Aufbohrwendeschneidplatte (indexable drilling/boring insert)
• Manufacturer: Walter Tools

Data

• Material group: P / K

Special features

• Series: Tiger·tec Silver
• Grade: WKP25S (coated carbide)
• Chipbreaker: 7R‑E57
• Suitable for: steel (P) and cast iron (K)
• Application: drilling and boring operations
• SKU: P4840P-7R-E57-WKP25S-WALTER

FAQ

What materials is this insert designed for?
The insert is specified for ISO groups P and K, which means it is suitable for machining steel and cast iron; the WKP25S grade and Tiger·tec Silver coating are optimised for those materials.

What does the 7R‑E57 chipbreaker achieve?
The 7R‑E57 chipbreaker controls chip flow and promotes short, breakable chips during drilling and boring, supporting stable cutting conditions and fewer interruptions.

Can this insert be indexed in common drilling toolholders?
Yes, the indexable design enables quick rotation to a fresh cutting edge in compatible holders, reducing changeover time and maintaining production continuity with the P4840P-7R-E57 WKP25S insert.

Is the insert coated and how does that affect performance?
The Tiger·tec Silver coating on the WKP25S grade offers improved wear resistance and edge security, which contributes to predictable tool life and consistent machining quality.

Is this insert suitable for stainless steel?
No specific approval for stainless steel is provided; the documented application groups are P (steel) and K (cast iron), so performance for stainless materials is not specified.

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

The Walter AG (marketed as Walter Tools) with headquarters in Tübingen is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Swedish Sandvik group. Protected trademarks and trade names remain the property of their respective owners and are cited here for explanation only. There is no affiliation between our company and the mentioned brands. The offered article is an original, factory-new product of the manufacturer.