P4840P-5R-E77 WN15 WN15 Wendeplatten - Walter Tools

Take advantage of the combination of stable chip formation, the 5R‑E77 chipbreaker geometry and the cost‑effective, uncoated WN15 carbide grade for reliable drilling and boring operations; order directly via Metav Werkzeuge or consult the specialists for application guidance.

P4840P-5R-E77 WN15 Drilling/Boring indexable insert — 5R‑E77 chipbreaker, uncoated carbide (Walter Tools)

The P4840P-5R-E77 WN15 is an indexable insert for drilling and boring applications, equipped with the 5R‑E77 chipbreaker and produced in Walter’s open-grade WN15 (uncoated carbide) for general cutting tasks.

• Uncoated carbide WN15
• 5R‑E77 chipbreaker geometry
• Optimised for drilling and boring

Greater process reliability through consistent chip control

The design focus of this insert is stable chip formation, achieved by the 5R‑E77 chipbreaker which shapes and evacuates chips effectively during drilling and light boring operations. This reduces the risk of chip jamming and contributes to a more consistent tool life, particularly in interrupted cuts or varying feeds. For manufacturing environments where cycle times and uptime matter, the controlled chip flow helps maintain productivity and reduces unplanned stoppages.

Uncoated WN15 grade explained — why it matters

The WN15 grade is an uncoated carbide developed for broad application ranges; it balances wear resistance and toughness for general machining tasks. In practice, this means acceptable performance across diverse workpiece materials when cutting parameters are set appropriately. The grade description recommends that the exact workpiece suitability be verified against the product matrix, so selection is based on the specific material and cutting conditions rather than assumptions.

Practical integration into drilling and boring processes

As an indexable insert, the component is intended for machines and holders designed for insert‑style drilling or light boring. The P4840P‑5R‑E77 geometry aligns with tooling systems that accept this ISO designation, enabling quick index changes and predictable repeatability. For production lines, the combination of a standardised insert form and the 5R‑E77 chipbreaker reduces setup time and simplifies tool management, supporting faster tool changes and lower inventory complexity.

Operational and economic advantages in daily use

Operators and process planners benefit from the insert’s emphasis on operational stability: fewer interruptions, easier chip handling and the possibility of maintaining steady feeds. The uncoated WN15 grade can also be an economical choice where coated grades are unnecessary, lowering tool cost per edge while still delivering reliable results in suitable applications. For best outcomes, matching the insert to the correct holder and verifying the material matrix are recommended steps before process implementation.

For reliable drilling and boring performance with Walter Tools’ WN15 inserts, contact Metav Werkzeuge for application advice and procurement: info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• SKU: P4840P-5R-E77-WN15-WALTER
• Article: P4840P-5R-E77 WN15
• Product type: Drilling/Boring indexable insert
• Grade: WN15 (uncoated carbide)
• Designation: P4840P-5R-E77 WN15

Facts

• No numerical cutting data provided in the dataset
• No measurable dimensions or tolerances provided

Special features

• Chipbreaker: 5R‑E77
• Series: Walter Schneidstoffsorte - Serie offen
• Grade description: WN15 (uncoated carbide)
• Designation without grade: P4840P-5R-E77
• ISO designation: P4840P-5R-E77 WN15
• Material specification: Katalogabhängig

FAQ

What materials is this insert suited for?
The insert in the P4840P‑5R‑E77 WN15 family is an uncoated carbide grade intended for general machining; suitability for specific materials should be checked against the product matrix provided by Walter Tools and the technical documentation.

How does the 5R‑E77 chipbreaker affect machining?
The 5R‑E77 chipbreaker is designed to promote stable chip formation and evacuation during drilling and boring, which reduces chip build‑up and helps maintain consistent tool life when using the P4840P‑5R‑E77 WN15 insert.

Is the WN15 grade coated or uncoated?
The WN15 grade used for this insert is an uncoated carbide grade, offering a balance of toughness and wear resistance for broad applications where a coating is not required.

Can the insert be indexed for multiple edges?
Yes, the P4840P‑5R‑E77 design follows standard indexable insert practice; edges can be rotated or replaced according to the holder’s capabilities to extend usable tool life.

Protected trademarks and trade names are the property of their respective owners. Mark names and registered trademarks are used solely for explanation and identification; there is no affiliation between our company and the mentioned manufacturers. The offered article is an original, factory‑new product of the respective manufacturer.

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