P2840S-7N-E77 WNN15 Wendeplatten - Walter Tools

Take advantage of the combination of coated carbide performance, 7N‑E77 chip control, and Walter Tools' manufacturing consistency for reliable drilling and reaming cycles. Order the insert directly via Metav Werkzeuge or consult the technical team for application matching.

P2840S-7N-E77 WNN15 Drill/Reaming Indexable Insert — 7N‑E77 chipbreaker, coated carbide (Walter Tools)

A P2840S-7N-E77 WNN15 is a coated carbide indexable insert for drilling and reaming, designed to deliver stable chip formation and consistent results across varied machining tasks.

• Coated carbide grade WNN15
• 7N‑E77 chipbreaker for reliable chip control
• Suitable for drilling and reaming applications
• Walter Tools manufacturing consistency

Higher throughput through controlled chip formation

The insert is engineered around a defined chipbreaker geometry (7N‑E77) that promotes predictable chip flow and reduces the risk of built‑up edge. This leads to fewer interruptions at the machine and improved cycle times, a clear advantage for shops seeking measurable productivity gains. The combination of a coated carbide grade and dedicated chip geometry ensures wear resistance, translating into more consistent tool life and fewer indexings per toolholder.

Application guidance and material suitability

The grade WNN15 is a coated carbide formulation intended for general machining tasks; however, material suitability must be checked against the specific product matrix. Where available, the insert supports a broad material range when paired with appropriate cutting data. For hardened or specialised alloys, consult the technical matrix to confirm that the grade matches the substrate and cutting conditions, ensuring process safety and optimal edge life.

Precision finish and repeatability in holemaking

Designed for drilling and reaming tasks, the geometry contributes to improved surface quality and dimensional stability. The insert's profile reduces vibration and fosters steady cut engagement, which aids in achieving target tolerances with fewer reworks. Emphasis on precision and repeatability makes this insert suitable for production runs where uniform hole quality is required and downtimes for insert changeover must be minimised.

Handling, integration and economic benefits

The insert integrates into standard toolholders compatible with the P2840S family and can be incorporated into existing tool systems with minimal modification. The coated carbide grade and stable chip control reduce unexpected tool failures, supporting predictable maintenance intervals. For procurement, choosing a consistent grade such as WNN15 helps to simplify inventory and to standardise process parameters across machines, delivering a pragmatic balance of performance and cost control.

Contact Metav Werkzeuge for application advice and to secure genuine Walter Tools inserts (SKU P2840S-7N-E77-WNN15-WALTER); eMail: info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: P2840S-7N-E77-WNN15-WALTER
• Designation: P2840S-7N-E77 WNN15
• Product type: Drill/Reaming indexable insert
• Manufacturer: Walter Tools

Core data

• Grade: WNN15
• Chipbreaker: 7N‑E77
• Coating: coated carbide
• Series: Walter Schneidstoffsorte - Serie offen

Special features

• Open series Walter grade
• Coated carbide grade for general machining
• Intended for drilling and reaming applications
• Material suitability: check product matrix for specific substrates

FAQ

What materials is the P2840S-7N-E77 WNN15 suited for?
The P2840S-7N-E77 WNN15 uses a coated carbide grade intended for general machining; refer to the product matrix to confirm suitability for specific materials before planning production.

How does the 7N‑E77 chipbreaker affect machining?
The 7N‑E77 chipbreaker on this insert improves chip control and reduces the risk of entanglement, resulting in more stable cycles and enhanced surface finish during drilling and reaming operations.

Can this insert be used for reaming as well as drilling?
Yes, the insert is designed for drilling and reaming applications and provides dimensional stability when integrated into compatible toolholders.

How is tool life improved with this grade?
The coated carbide formulation WNN15 offers wear resistance and consistent edge retention, which contributes to extended index life and fewer unscheduled tool changes.

How is the insert identified on delivery?
The insert is supplied and labelled as P2840S-7N-E77 WNN15 by Walter Tools; the SKU for ordering is P2840S-7N-E77-WNN15-WALTER.

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

Walter AG (branded as Walter Tools), headquartered in Tübingen, is one of the world’s leading manufacturers of precision tools for metalworking and forms part of the Sandvik group. Protected trademarks and trade names are the property of their respective owners. Brand names and protected trade marks are mentioned solely for explanatory purposes. There is no connection between our company and the mentioned brands. The offered article is an original, factory‑new product of the manufacturer.