P4840P-3R-E77 WN15 Wendeplatten - Walter Tools

Take advantage of the combination of uncoated carbide reliability (grade WN15) and the 3R-E77 chipbreaker for consistent drilling and counterboring performance; order directly via Metav Werkzeuge or consult their specialists for application-specific advice.

P4840P-3R-E77 WN15 — Drill/counterbore indexable insert by Walter Tools

P4840P-3R-E77 WN15 is an indexable insert designed for precise drilling and counterboring applications in industrial machining.

*Uncoated carbide grade WN15
*3R-E77 chipbreaker geometry
*Designed for drilling and counterboring
*Open series for flexible application

High-performance cutting that stabilises production

The uncoated carbide composition of this insert provides a robust cutting edge that resists thermal softening and preserves dimensional stability during repetitive cycles. The choice of WN15 as the substrate reflects a balance between toughness and wear resistance suitable for a range of workpiece materials; however, suitability must be verified against the specific product matrix to ensure optimal results. The construction of this insert contributes directly to reduced tool-change frequency and clearer process control, supporting predictable cycle times and consistent component quality.

Controlled chip formation for improved hole quality

The integrated 3R-E77 chipbreaker is engineered to manage chip flow during drilling and counterboring, reducing the risk of built-up edge and workpiece damage. Stable chip evacuation helps maintain surface finish and concentricity, which translates into fewer secondary operations and lower scrap rates. In practice, this results in steadier cutting forces and improved hole integrity, particularly where consistent bore geometry is critical to assembly processes.

Flexible system integration and economic operation

As part of an open series from Walter Tools, the insert offers flexibility across compatible toolholders and drilling systems, supporting fast indexability and low inventory complexity. The indexable format allows a quick corner change instead of full regrinding, delivering cost-effective tool management and shorter machine downtime. For engineering teams seeking a pragmatic balance of performance and economy, this insert is a practical component within a controlled machining strategy.

For application-specific selection of the Walter Tools P4840P-3R-E77 WN15 insert and to confirm compatibility with intended workpiece materials, contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 for technical guidance and ordering assistance

Technical data

• Article number: P4840P-3R-E77-WN15-WALTER
• Label: Bohr-/Aufbohrwendeschneidplatte P4840P-3R-E77 WN15 Walter Tools
• Product type: Drill/counterbore indexable insert

Facts

• Grade: WN15
• Chipbreaker: 3R-E77
• Series: Walter Schneidstoffsorte - Serie offen
• Material: Katalogabhängig

Special features

• Uncoated carbide insert
• Designed for drilling and counterboring
• Open series for flexible application
• Verify workpiece suitability with the product matrix

FAQ

What materials is this insert suitable for?
Material suitability depends on the specific application matrix; the P4840P-3R-E77 WN15 insert is an uncoated carbide grade that requires verification against the workpiece material in the product matrix.

Is the insert coated?
No, the P4840P-3R-E77 WN15 is an uncoated carbide insert, offering a direct cutting-edge geometry without additional coating layers.

What chipbreaker does this insert use?
The insert features the 3R-E77 chipbreaker, optimised for controlled chip formation during drilling and counterboring.

Can this insert be used in standard drill toolholders?
The insert is intended for indexable drill and counterbore systems; compatibility with a specific toolholder should be confirmed before assembly.

Manufacturer: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany

Protected trademarks and trade names remain the property of their respective owners. Brand names and registered trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the referenced brands. The offered item is an original, factory-new product of the manufacturer.