P4840P-6R-A57 WKP25S Wendeplatten - Walter Tools

Benefit from the combination of Tiger‑tec Silver coating and the WKP25S grade for extended tool life and stable chip control in steel and cast iron machining; order directly via Metav Werkzeuge or consult our specialists for application advice.

P4840P-6R-A57 WKP25S indexable insert for drilling and counterboring — Walter Tools

The P4840P-6R-A57 WKP25S is an indexable insert developed for productive drilling and counterboring operations, optimised for machining steel and cast iron in industrial CNC environments

• Tiger‑tec Silver coating for long tool life
• WKP25S: coated carbide grade, high wear resistance
• Optimised 6R‑A57 chipbreaker for reliable chips
• For machining steel and cast iron (ISO P, K)

Consistent performance in steel and cast iron

The combination of the Tiger‑tec Silver series and the WKP25S grade delivers a balance of wear resistance and thermal stability that is particularly valuable when machining unalloyed, alloyed steels and grey or spheroidal cast irons. The coated carbide substrate supports higher cutting speeds while maintaining edge integrity, which reduces tool changes and keeps cycle times predictable. In practical terms, this means fewer interruptions on the shop floor and a measurable improvement in process efficiency for medium- to high-volume drilling and counterboring tasks.

Stable chip control for uninterrupted production

The 6R‑A57 chipbreaker geometry is designed to produce short, controllable chips when working across the ISO P and K groups. A dedicated chip control geometry prevents long, stringy chips from fouling the tool or workpiece, lowering the risk of rework and machine stoppages. By converting complex chip behaviour into a manageable evacuation pattern, the insert supports consistent surface finish and dimensional stability, which is essential for downstream operations and inspection processes.

Higher productivity with predictable tool life

Coated hardmetal in the WKP25S specification offers a good compromise between toughness and hardness, giving reliable edge retention under typical drilling loads. The coating technology reduces flank and crater wear, translating into longer service intervals and fewer index changes. For production planners, this results in lower tooling consumption per part and more stable machining windows. The grade is catalogued for general drilling and boring, making it a practical choice when a single insert family is required across mixed batches of steel and cast iron components.

For machining tasks that demand process security and consistent results with Walter Tools' Tiger‑tec Silver grade, contact Metav Werkzeuge for tailored recommendations and availability via info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• SKU: P4840P-6R-A57-WKP25S-WALTER
• Article designation: P4840P-6R-A57 WKP25S
• Product type: Indexable insert for drilling/counterboring
• Grade: WKP25S
• Series: Tiger‑tec Silver

Facts

• Suitable for: Steel (P) and Cast iron (K)
• Geometry / chipbreaker: 6R‑A57
• Material: Coated carbide
• ISO designation: P4840P-6R-A57 WKP25S

Special features

• Coating technology: Tiger‑tec Silver
• Wear-resistant WKP25S grade
• Optimised chip control
• Manufacturer: Walter Tools

FAQ

What materials is this insert suitable for?
The P4840P-6R-A57 WKP25S insert is specified for steel (ISO P) and cast iron (ISO K) applications and is therefore suitable for mixed-shop environments where both material groups are processed.

How does the 6R-A57 chipbreaker improve machining?
The 6R‑A57 geometry produces short, controlled chips that ease evacuation and reduce the likelihood of chip entanglement, which supports uninterrupted drilling and counterboring with this Walter Tools indexable insert.

What advantages does the WKP25S grade offer?
WKP25S is a coated carbide grade tailored for a broad range of steel and cast iron conditions; it combines good edge retention with wear resistance to extend tool life under typical drilling loads.

Is this insert suitable for higher cutting speeds?
The Tiger‑tec Silver coating enhances thermal stability and abrasion resistance, allowing the insert to withstand elevated cutting speeds compared with uncoated grades in similar applications.

Can the same insert be used across different machine types?
The P4840P‑6R‑A57 WKP25S insert is designed for standard drilling and counterboring toolholders and is commonly used in CNC drilling heads and gang drilling setups where the chip control and grade match the part material.

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

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