P4840P-4R-E57 WKP25S Wendeplatten - Walter Tools

The combination of the WKP25S grade and the 4R‑E57 chipbreaker delivers a balanced mix of durable wear resistance and reliable chip control for demanding drilling and boring tasks; order directly via Metav Werkzeuge or consult our technical advisors for application-specific recommendations.

P4840P-4R-E57 WKP25S – Bohr-/Aufbohrwendeschneidplatte, Tiger·tec Silver by Walter Tools

The P4840P-4R-E57 WKP25S is a coated drilling and boring indexable insert engineered for productive machining of Stahl and Gusseisen in industrial turning and boring operations

• Tiger·tec Silver coating technology
• WKP25S grade for stable wear resistance
• Optimised for Stahl and Gusseisen
• 4R‑E57 chipbreaker for controlled chips

Consistent productivity through optimised grade and coating

The Tiger·tec Silver coating combined with the WKP25S substrate reduces wear rates under typical turning and boring loads, resulting in longer tool life and fewer insert changes. For operations that prioritise cycle time, this coated grade offers measurable benefits: reduced downtime due to less frequent index changes and a more stable cutting edge over extended tool life. The result is a predictable machining rhythm and improved overall equipment effectiveness. The product designation P4840P-4R-E57 WKP25S reflects the chipbreaker geometry and grade choice, which together address abrasive wear and thermal loads common when machining medium-alloy materials.

Better chip control and surface consistency with a dedicated chipbreaker

The 4R‑E57 chipbreaker is designed to produce short, manageable chips when cutting into Stahl and Gusseisen, reducing the risk of entanglement and improving evacuation in deep or interrupted cuts. Controlled chip formation also supports more consistent contact conditions at the cutting edge, which translates into improved surface finishes and repeatable process outputs. This geometric control is particularly advantageous when high material removal rates are required or when machining components that demand narrow tolerances.

Practical application guidance for reliable tool selection

When selecting an insert for drilling and boring tasks, prioritise the match between insert geometry, grade and the workpiece group. The Tiger·tec Silver family is formulated for a wide range of steels and cast irons; this insert performs well in catalogue‑specified drilling and boring geometries. For best results, pair the insert with suitable holder geometry and cutting parameters aligned to the workpiece ISO group P and K, and ensure coolant or lubrication strategy supports the intended cut depth and spindle speed. The controlled wear behaviour of the WKP25S grade helps maintain process stability over serial runs.

For application support or tailored recommendations on Walter Tools Tiger·tec Silver inserts, contact Metav Werkzeuge: info@metav-werkzeuge.com | +49 2822 7131930 — our technical consultants provide material‑specific cutting data and quick delivery options

Technical data

• Article number: P4840P-4R-E57-WKP25S-WALTER
• Designation: P4840P-4R-E57 WKP25S
• Type: Bohr-/Aufbohrwendeschneidplatte

Facts

• SKU: P4840P-4R-E57-WKP25S-WALTER
• UID: P4840P-4R-E57-WKP25S-WALTER

Special features

• Series: Tiger·tec Silver
• Grade: WKP25S (coated carbide)
• Chipbreaker: 4R‑E57
• Material compatibility: Stahl, Gusseisen
• Manufacturer: Walter Tools

FAQ

Which materials is this insert designed for?
The insert is intended for machining Stahl (ISO group P) and Gusseisen (ISO group K); the WKP25S grade and 4R‑E57 chipbreaker address common wear modes for these materials.

What does the Tiger·tec Silver designation mean?
Tiger·tec Silver denotes the coating technology and graded carbide combination used on the insert to improve wear resistance and thermal stability during drilling and boring.

Is the chipbreaker suitable for interrupted cuts?
Yes, the 4R‑E57 chipbreaker provides controlled chip formation that helps with chip evacuation and reduces the risk of chip-related interruptions in many drilling and boring applications.

How does the WKP25S grade affect tool life?
WKP25S is formulated to balance wear resistance and toughness, offering more consistent tool life under typical industrial cutting conditions for Stahl and Gusseisen.

Can this insert be used in standard Walter Tools tool holders?
The insert follows conventional indexable insert designations and is compatible with matching holder geometries specified for P4840P‑type inserts; confirm holder compatibility with the chosen cutting geometry.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only and indicate no affiliation between Metav Werkzeuge and the trademark holders. The offered item is an original, factory-new product of the manufacturer Walter Tools.