P4840P-4R-E77 WN15 Wendeplatten - Walter Tools

Optimise holemaking with a focus on reproducible edge life and consistent chip control: the uncoated carbide WN15 grade paired with the 4R‑E77 chipbreaker delivers economical, stable performance in drilling and boring operations. Order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

P4840P-4R-E77 WN15 — Drill/Boring Indexable Insert with 4R‑E77 Chipbreaker by Walter Tools

The P4840P-4R-E77 WN15 is an indexable insert designed for drilling and boring, offering an uncoated carbide grade and a dedicated chipbreaker for controlled metal removal

• Uncoated carbide grade WN15
• 4R‑E77 chipbreaker for stable chip control
• For drilling and boring applications
• Compatible with Walter open-series cutters

Consistent chip control for reliable cutting performance

The combination of the 4R‑E77 chipbreaker and the WN15 uncoated carbide grade gives this indexable insert a predictable chip formation pattern, which reduces the risk of clogging and improves cycle reliability. Stable chips mean fewer interruptions for cleaning and less risk to the tool edge, supporting continuous operation in medium-duty holemaking. The design focuses on practical manufacturability: consistent chip evacuation translates directly into reduced machine downtime and more predictable component quality.

Productivity advantages in drilling and boring operations

Designed specifically for holemaking, this insert improves process efficiency through its geometry and chip management. The insert's cutting characteristics support stable feeds and depths of cut, enabling shorter cycle times without compromising surface integrity. When paired with appropriate toolholders and cutting parameters, the indexable solution promotes repeatable hole quality and efficient material removal, which contributes to lower unit machining costs and better utilisation of machine capacity.

Practical guidance on material suitability and selection

The WN15 grade is an uncoated carbide variant; its performance depends on the workpiece material and the chosen cutting data. The grade is described as part of Walter’s open series, and workpiece compatibility should be verified against the official product matrix. For customers less familiar with carbide grades: uncoated carbide typically offers a balance between sharpness and wear resistance and is often selected for general-purpose operations or where a specific coating is not required for the application.

Integration into production and handling recommendations

As a member of Walter’s open-series cutting grades, the insert is intended for use in standard indexable tool systems for drilling and boring. Correct seating, torqueing of the screw and adherence to recommended cutting parameters will ensure the designed edge life and chip behaviour. For process optimisation, document observed tool life and chip forms under the actual cutting conditions and adjust feeds or coolant strategies accordingly to extend tool life and maintain consistent hole quality.

For consistent and economical holemaking, specify Walter Tools’ WN15 grade with the 4R‑E77 chipbreaker — contact Metav Werkzeuge for application support, compatible toolholder options and to place an order.

Technical data

• Article number: P4840P-4R-E77-WN15-WALTER
• Designation: P4840P-4R-E77 WN15
• Type: Drill/boring indexable insert
• Manufacturer: Walter Tools
• Series: Walter Schneidstoffsorte - Serie offen
• Grade: WN15
• Chipbreaker: 4R‑E77
• Material: Catalogue-dependent

Facts

• No measurable numerical data provided in the product feed

Special features

• Uncoated carbide grade
• 4R‑E77 chipbreaker geometry
• Open-series grade for general application assessment
• Intended application: drilling and boring
• Workpiece suitability: check product matrix for recommendations

FAQ

What materials is this insert suitable for? The P4840P-4R-E77 WN15 drill/boring indexable insert (SKU P4840P-4R-E77-WN15-WALTER) is an uncoated carbide grade; exact material suitability must be checked in the Walter product matrix for optimal selection.

How does the 4R‑E77 chipbreaker improve performance? The 4R‑E77 chipbreaker on this Walter Tools insert promotes controlled chip formation, reducing clogging and enabling more consistent cutting conditions during drilling and boring cycles.

Is the insert coated? No, the WN15 grade in this item is an uncoated carbide type; its selection is appropriate where an uncoated grade offers the desired balance between sharpness and wear resistance.

Can this insert be used in standard indexable toolholders? Yes, the insert is designed for drilling and boring applications within standard indexable tool systems; ensure correct seating and torqueing as per toolholder specifications.

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

Protected trademarks and trade names are the property of their respective owners. Brand names are mentioned for clarification of product origin and compatibility. There is no affiliation between Metav Werkzeuge and the named brands; the offered article is an original, brand-new product from the manufacturer Walter Tools.