P2841S-7N-E57 WKP35S Wendeplatten - Walter Tools

Take advantage of the Tiger·tec Silver coating in combination with the WKP35S grade and the 7N-E57 chipbreaker to secure consistent wear resistance and controlled chip formation when enlarging or finishing holes in steel and cast iron; order directly via Metav Werkzeuge or consult our specialists for application-specific advice.

P2841S-7N-E57 WKP35S drilling/reaming indexable insert – Tiger·tec Silver (Walter Tools)

The P2841S-7N-E57 WKP35S is a coated carbide indexable insert optimised for holemaking and hole-enlarging operations on steel and cast iron, offering a balance of wear resistance and reproducible cutting performance.

• Tiger·tec Silver coating for wear resistance
• Optimised 7N-E57 chip control
• Designed for steel and cast iron (P/K)
• Coated carbide grade WKP35S for long tool life

Increase productivity with a wear-resistant holemaking solution

The combination of Tiger·tec Silver technology and the WKP35S grade delivers a stable cutting edge and extended tool life, reducing downtime for insert changes and lowering per-part costs in volume production. The insert’s coated carbide substrate is engineered to withstand the thermal and mechanical loads typical of holemaking in steel and cast iron, so machining parameters can be pushed for shorter cycle times without sacrificing component quality. By improving flank and crater wear behaviour, this geometry supports constant cutting forces and predictable tool-change intervals, which benefits process planning and overall shop-floor efficiency.

Controlled chips and consistent surface quality for holemaking

The 7N-E57 chipbreaker is designed to break and evacuate chips reliably during drilling and reaming operations, especially where chip shape and evacuation affect component integrity and tool life. Predictable chip control reduces the risk of recutting, scoring or built-up edge on internal surfaces, resulting in repeatable surface finish and dimensional stability. For users less familiar with chipbreaker terminology: the chipformer’s geometry channels and fractures the swarf so that it clears from the bore, lowering the chance of tool jamming and improving reproducibility across batches.

Application guidance and compatibility for process planning

This insert is tailored to the ISO P and K workpiece groups, meaning it is suitable for a broad range of unalloyed and alloyed steel grades as well as a variety of cast iron materials. The WKP35S grade is a coated hardmetal formulation optimised for the thermal and abrasive conditions encountered in these materials, offering a compromise between wear resistance and toughness. In practice, the insert excels in standard and slightly elevated cutting-speed ranges; when planning cuts, consider flank-wear limits and machine rigidity to make the most of the insert’s potential. For interrupted cuts or unstable clamping, review feed and speed reductions to preserve the cutting edge and maintain consistent hole geometry.

For productive and reliable holemaking with the Tiger·tec Silver WKP35S grade, contact Metav Werkzeuge for tailored technical advice and swift supply at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: P2841S-7N-E57-WKP35S-WALTER
• Designation: P2841S-7N-E57 WKP35S
• Product type: drilling/reaming indexable insert
• Series: Tiger·tec Silver
• Grade: WKP35S
• Chipbreaker: 7N-E57
• Material group: P / K
• Brand: Walter Tools

Facts

• SKU / UID: P2841S-7N-E57-WKP35S-WALTER
• Applicable ISO groups: P, K

Special features

• Coating: Tiger·tec Silver
• Substrate: coated carbide (WKP35S)
• Suitable for: steel (P), cast iron (K)
• Typical applications: holemaking, hole enlargement, reaming
• Manufacturer brand: Walter Tools

FAQ

Which materials can be machined with this insert?
The insert is suitable for machining steel (ISO P) and cast iron (ISO K); the WKP35S grade and Tiger·tec Silver coating are tuned to those groups.

What benefit does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating improves wear resistance and thermal stability, extending the service life of the WKP35S coated carbide insert under the heat and abrasion typical of holemaking.

How does the 7N-E57 chipbreaker affect performance?
The 7N-E57 chipbreaker ensures controlled chip formation and evacuation during drilling and reaming, which supports consistent surface finish and reduces the risk of tool jamming.

Is this insert suitable for interrupted cuts or unstable conditions?
The WKP35S grade offers a balance of toughness and wear resistance; for highly interrupted cuts or poor rigidity, adjust feeds and speeds to reduce shock and preserve the cutting edge.

Manufacturer/Responsible: AB Sandvik Coromant, Mossvägen 10, 811 34 Sandviken, Sweden, support.coromant@sandvik.com