P4840C-6R-E77 WNN15 WNN15 Wendeplatten - Walter Tools

Take advantage of the combination of coated carbide performance, consistent chip control and robust geometry for reliable drilling and reaming cycles. Order inserts via Metav Werkzeuge or consult our specialists for application-specific guidance.

P4840C-6R-E77 WNN15 – Drilling/reaming indexable insert with 6R‑E77 chipbreaker by Walter Tools

The P4840C-6R-E77 WNN15 is a drilling/reaming indexable insert engineered for stable material removal and predictable tool life in production environments.

• Coated carbide grade WNN15
• 6R‑E77 chipbreaker geometry
• Designed for drilling and reaming
• Walter Tools quality and consistency

Consistent cutting with a coated carbide grade for productivity

The insert uses the WNN15 coated carbide grade, developed to balance wear resistance and toughness for repetitive machining tasks. This coating improves edge life under cyclic loads and reduces flank wear, which translates into longer intervals between indexings and fewer tool changes. For operations where cycle time and tool-change frequency affect throughput, the insert’s optimised geometry supports stable cutting forces and predictable tool performance, helping to maintain consistent part quality across batches.

Improved chip control and process stability from the 6R‑E77 chipbreaker

The 6R‑E77 chipbreaker directs and breaks chips reliably during drilling and reaming, reducing the risk of chip entanglement and secondary damage to the hole. Better chip control increases uninterrupted running time and lowers the likelihood of workpiece rework. The insert’s form is tailored to promote a steady metal flow, which benefits hole surface finish and hole tolerance consistency. For customers seeking reproducible results, the geometry aids in reducing vibration sensitivity and supports smoother tool paths.

Application guidance and integration into machining processes

Although the insert is part of Walter Tools’ open series and built from coated carbide, suitability depends on the specific component matrix and machining parameters. Compatibility with a given machine, holder and workpiece material should be checked against the product matrix and cutting data. When correctly matched to the toolholder and feed/speed settings, the insert contributes to process security and efficient chip evacuation, making it a pragmatic choice for batch production and mixed-series machining where reliability matters.

For application-specific recommendations on the P4840C-6R-E77 WNN15 indexable inserts from Walter Tools, contact Metav Werkzeuge for tailored advice and availability.

Technical data

• Article number: P4840C-6R-E77-WNN15-WALTER
• Product type: Drilling/reaming indexable insert
• Brand: Walter Tools
• Series: Walter Schneidstoffsorte - Serie offen

Core technical data

• Grade designation: WNN15
• Chipbreaker: 6R‑E77
• ISO designation: P4840C-6R-E77 WNN15
• Subtype: P4840C-6R-E77

Special features

• Coating: Coated carbide (as per series specification)
• Material specification: Catalogue-dependent
• Intended use note: Verify workpiece suitability via product matrix

FAQ

What materials is this insert suitable for?
Suitability depends on the specific product matrix; the P4840C-6R-E77 WNN15 is a coated carbide insert and workpiece compatibility should be checked in the Walter Tools application data.

How does the 6R‑E77 chipbreaker affect machining?
The 6R‑E77 chipbreaker improves chip control during drilling and reaming, promoting stable evacuation and reducing the chance of chip-related interruptions.

Is the P4840C-6R-E77 WNN15 compatible with standard holders?
The insert fits holders designed for the P4840C family; confirm holder compatibility and clamping specifications before integration.

What performance benefits can be expected from this Walter Tools grade?
The WNN15 grade is aimed at balanced wear resistance and toughness, supporting longer edge life, consistent hole quality and improved process security under appropriate cutting conditions.

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

Trademarks and trade names are the property of their respective owners. Brand names and protected designations are cited for explanatory purposes only. There is no affiliation between Metav Werkzeuge and the named brands. The offered article is original, factory-new goods from the manufacturer.