P4840C-1R-E77 WN15 Wendeplatten - Walter Tools

Benefit from the combination of a dedicated chipformer, a robust uncoated carbide grade and a purpose-designed geometry to support stable machining in drilling and reaming operations; order the insert directly via Metav Werkzeuge or consult the technical team for application guidance.

P4840C-1R-E77 WN15 drilling/reaming indexable insert, 1R‑E77 chipbreaker — Walter Tools

The P4840C-1R-E77 WN15 is an indexable insert for drilling and reaming applications, equipped with a 1R‑E77 chipbreaker and supplied in the Walter open-series carbide grade.

• Uncoated carbide grade WN15
• 1R‑E77 chipbreaker for chip control
• For drilling and reaming operations

Consistent chip control for productive machining

The combination of the WN15 uncoated carbide grade and the 1R‑E77 chipbreaker offers a technical basis for stable chip formation during holemaking. Uncoated carbide means the cutting edge is produced from cemented carbide without additional PVD/CVD layers, which can provide a direct, predictable wear pattern and straightforward regrinding options where applicable. The defined chip geometry reduces the risk of long, stringy chips and supports continuous metal removal, contributing to fewer interruptions and a more predictable machining cycle.

Adaptable performance and process reliability

Designed as part of an open series, this insert provides flexibility across a range of toolbody systems and applications while maintaining repeatable cutting behaviour. The open-series classification indicates that the grade and geometry are positioned for generality rather than niche optimisation; therefore, compatibility with specific workpiece materials and cutting parameters should be verified against the manufacturer’s product matrix. This approach helps maintain process reliability and supports planning for tool-life expectations and tool-change intervals.

Selection guidance and application considerations

When assessing suitability, refer to the product matrix to confirm material compatibility and recommended cutting data, since the grade is specified as catalogue-dependent for some dimensions. For holemaking where chip evacuation and consistent surface integrity matter, the 1R‑E77 chipbreaker is engineered to aid controlled chip segmentation. For bespoke advice on feeds, speeds and holder matching, technical support from Metav Werkzeuge is available to ensure the insert is applied in a way that balances productivity and component quality.

For tailored application advice on Walter Tools inserts such as the P4840C-1R-E77 WN15, contact Metav Werkzeuge for precise recommendations and support via info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: P4840C-1R-E77-WN15-WALTER
• Manufacturer: Walter Tools
• Product type: drilling/reaming indexable insert

Facts

• No numeric specifications provided in the available data

Special features

• Grade: WN15 (uncoated carbide)
• Chipbreaker: 1R‑E77
• Series: Walter Schneidstoffsorte - Serie offen
• Designation: P4840C-1R-E77 WN15
• Material specification: catalogue dependent

FAQ

What materials is this insert suitable for? The insert is supplied in the WN15 uncoated carbide grade; suitability for specific materials must be checked against the Walter Tools product matrix for the P4840C-1R-E77 WN15 insert.

Is the P4840C-1R-E77 WN15 coated or uncoated? The P4840C-1R-E77 WN15 is an uncoated carbide insert, which produces a predictable wear pattern and allows clear assessment of cutting-edge condition.

How does the 1R‑E77 chipbreaker affect machining? The 1R‑E77 chipbreaker is designed to promote chip segmentation and controlled evacuation during drilling and reaming, supporting more stable machining cycles with fewer interruptions.

Can Metav Werkzeuge provide cutting-data recommendations? Yes, Metav Werkzeuge can advise on cutting parameters and holder compatibility to align the P4840C-1R-E77 WN15 insert with specific applications and process goals.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected designations are mentioned solely for explanatory purposes. There is no commercial relationship implied between Metav Werkzeuge and the trademark holders. The offered article is original, factory-new production from the manufacturer.