P4840P-7R-A57 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver coating and the WKP25S grade for consistent tool life and reliable chip control; the result is efficient drilling and bore‑enlargement in steel and cast iron. Order directly via Metav Werkzeuge or consult our technical advisers for specification matching and availability.

P4840P-7R-A57 WKP25S drilling/bore‑enlargement indexable insert — coated carbide, for steel and cast iron, Walter Tools

P4840P-7R-A57 WKP25S is a drilling and bore‑enlargement indexable insert designed for productive machining of steel and cast iron using Tiger‑tec Silver coating

• Tiger‑tec Silver coating for long tool life
• WKP25S grade, optimised for P and K materials
• 7R‑A57 chipbreaker for stable chip control
• Coated carbide for productive machining

Increase throughput with predictable cutting performance

The Tiger‑tec Silver coating and the WKP25S carbide grade combine to offer a balance of wear resistance and toughness that supports higher material removal rates. Designed for drilling and bore enlargement, this insert preserves a stable cutting edge under typical heat and load conditions encountered in machining steel and cast iron, which reduces unplanned tool changes and boosts process uptime. The coating minimises abrasive wear while the substrate resists chipping, delivering measurable gains in productivity.

Secure chip control and surface quality in P and K groups

With the 7R‑A57 chipbreaker geometry, the insert produces consistent, controllable chip forms for the ISO P (steel) and K (cast iron) groups. This targeted geometry helps avoid chip accumulation in through‑hole or blind‑hole operations and contributes to improved surface finish and dimensional reliability. The designation P4840P‑7R‑A57 WKP25S signifies the specific geometry and grade combination, enabling straightforward selection for applications where chip evacuation and repeatable results are priorities.

Easy integration and predictable tool life for workshop routines

As an indexable insert for drilling and bore enlargement systems, the component is compatible with standard insert holders that accept the P4840P form. The use of a coated carbide grade reduces the frequency of regrinds and replacements, simplifying inventory and maintenance planning. Because the insert is tailored to the thermal and mechanical demands of steel and cast iron, tool life becomes easier to forecast, supporting production scheduling and cost‑efficiency in batch and continuous operations. If material characteristics or cycle parameters require clarification, technical advice is available to align the insert geometry and grade with the application.

Contact Metav Werkzeuge for application advice and immediate availability — Metav Werkzeuge can check tool compatibility and delivery options for Walter Tools inserts

Technical data

• Article number: P4840P-7R-A57-WKP25S-WALTER
• Designation: P4840P-7R-A57 WKP25S
• Type: drilling / bore‑enlargement indexable insert
• Manufacturer: Walter Tools
• Series: Tiger‑tec Silver

Core characteristics

• Chipbreaker: 7R‑A57
• Material groups: P / K
• Grade: WKP25S
• Product family: Tiger‑tec Silver

Special features

• Coated carbide (coating technology: Tiger‑tec Silver)
• Optimised for steel and cast iron machining
• Designed for stable chip formation and reduced wear
• Suited to drilling and bore‑enlargement applications

FAQ

What materials is this insert suitable for?
The P4840P‑7R‑A57 WKP25S insert is formulated for ISO P (steel) and ISO K (cast iron) materials and is optimised to handle the typical heat and chip characteristics of these groups.

How does the 7R‑A57 chipbreaker affect machining?
The 7R‑A57 chipbreaker promotes controlled chip formation and reliable evacuation, improving surface finish and reducing the risk of chip clogging in drilling and bore‑enlargement operations.

Is the Tiger‑tec Silver coating beneficial for high‑speed drilling?
Yes, the Tiger‑tec Silver coating on the WKP25S grade enhances wear resistance and thermal stability, which supports higher cutting speeds and extended tool life in many steel and cast iron applications.

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

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