P4840P-1R-A57 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, the WKP25S carbide grade and the optimised 1R‑A57 chipbreaker for reliable, high‑productivity drilling and boring in steel and cast iron. Order the insert directly via Metav Werkzeuge or consult the team for process‑specific recommendations.

P4840P-1R-A57 WKP25S drilling/boring indexable insert — coated carbide, Tiger·tec Silver, for steel & cast iron by Walter Tools

The P4840P-1R-A57 WKP25S is a coated carbide indexable insert engineered for productive drilling and boring operations in ISO groups P and K, delivering stable chip formation and long tool life.

• Tiger·tec Silver coated carbide grade WKP25S
• Optimised 1R‑A57 chipbreaker geometry
• Suited for steel and cast iron machining

Boosted cutting performance through modern coating and grade

The combination of the Tiger·tec Silver coating with the WKP25S carbide grade provides a clear performance advantage when machining steels and cast irons. The coating reduces friction and improves heat resistance, which in turn extends tool life and maintains a stable cutting edge under elevated temperatures. The result is a more consistent surface finish and fewer unscheduled tool changes, which supports higher machine utilisation and lower per‑hole production costs. The design is particularly suited to applications where predictable wear behaviour and repeatable results are required.

Controlled chip formation for safer, faster cycles

The 1R‑A57 chipbreaker is optimised for the chip types typical of steels and grey irons; it promotes short, controllable chip shapes and reduces the risk of recutting or tool clogging. In practice this means fewer interruptions for chip clearing, improved process security and the potential to raise cutting parameters safely. Explaining the term: a chipbreaker is a micro‑geometry on the insert flank that alters how the metal deforms and breaks off, so a well‑matched geometry translates directly into higher feed‑rate potential and more stable cycle times on the shop floor.

Seamless integration and predictable results for production use

This insert is suitable for standard indexable drill and boring toolholders and conforms to established ISO machining groups (P, K), simplifying tool selection and inventory. The coated carbide construction allows for dependable wear resistance in abrasive cast irons and for thermal loads when machining steels, which supports longer service intervals and predictable replacement planning. Choosing a grade and geometry from a proven series reduces setup risk and helps maintain product quality — an advantage when component tolerances and surface integrity are critical.

Contact Metav Werkzeuge for tailored selection and technical advice on Walter Tools inserts – email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: P4840P-1R-A57-WKP25S-WALTER
• Label: Bohr-/Aufbohrwendeschneidplatte P4840P-1R-A57 WKP25S Walter Tools
• Manufacturer: Walter Tools
• Product type: drilling/boring indexable insert
• Series: Tiger·tec Silver

Core data

• Grade: WKP25S
• Chipbreaker: 1R‑A57
• Material groups: P, K (steel, cast iron)
• Designation: P4840P-1R-A57 WKP25S

Special features

• Coated carbide (Tiger·tec Silver technology)
• Optimised chip control for short chips
• Suitable for drilling and boring applications
• Stable cutting edge for productive machining

FAQ

What materials is this insert designed to machine?
The P4840P-1R-A57 WKP25S insert is designed for ISO groups P and K, meaning it is suitable for machining various steels and cast irons with reliable chip control.

How does the Tiger·tec Silver coating benefit tool life?
The Tiger·tec Silver coating on the WKP25S grade reduces friction and thermal load at the cutting edge, which improves wear resistance and extends the service life of the insert in demanding drilling and boring operations.

What is the purpose of the 1R‑A57 chipbreaker?
The 1R‑A57 chipbreaker geometry is engineered to produce short, controllable chips when machining steel and cast iron, reducing the risk of chip entanglement and supporting higher, more stable cutting parameters.

Can these inserts be used in standard indexable drill holders?
Yes, the insert designation and geometry are compatible with conventional indexable drilling and boring toolholders; implementation depends on matching the insert to the holder specification.

How does this insert support productivity on the shop floor?
By combining a robust coated carbide grade with an optimised chipbreaker, the insert promotes longer tool life, fewer interruptions for chip issues and more consistent part quality — all contributing to higher overall process efficiency.

Manufacturer: Walter Tools; Headquarters: Tübingen, Germany; part of the Sandvik Group

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