P4840P-1R-E77 WN15 Wendeplatten - Walter Tools

Take advantage of the stable cutting behaviour of the WN15 grade together with the 1R-E77 chipbreaker for productive drilling and reaming operations; order directly via Metav Werkzeuge or consult the team for selection guidance.

P4840P-1R-E77 WN15 – Walter Tools drill/reaming indexable insert with 1R-E77 chipbreaker

P4840P-1R-E77 WN15 is an indexable insert for drilling and reaming, engineered to deliver consistent chip formation and reliable tool life in demanding cutting applications.

• Uncoated carbide grade WN15
• 1R-E77 chipbreaker geometry
• Designed for drilling and reaming

Stable chip control for consistent productivity

The combination of the 1R-E77 chipbreaker and the substrate geometry promotes controlled chip formation during drilling and reaming, which reduces the risk of tool jamming and improves cycle stability. This effect translates directly into higher productivity on series runs and fewer stoppages for manual clearing. The geometry is designed to favour manageable chip segments under standard cutting conditions; for atypical workpiece materials or cutting strategies, the product matrix should be consulted to confirm optimal parameters.

Reliable cutting grade for repeatable results

The insert is manufactured in the WN15 uncoated carbide grade, chosen for its balance between toughness and wear resistance. An uncoated carbide specification often benefits interrupted cutting and applications where coating risks adhesion or thermal sensitivity; it provides a straightforward option for users prioritising predictable wear behaviour. The grade designation indicates material characteristics rather than a universal suitability — checking the product matrix remains essential to match the insert to the specific workpiece material and machining strategy.

Practical application advice and selection logic

As a drill/reaming indexable insert, this item is suited to operations that require indexed replaceability and precise cutting geometry control. The insert’s design supports stable engagement in axial drilling and reaming tasks, offering a cost-effective route to maintaining cutting edge quality without frequent full-tool replacement. When planning tool sets, prioritise inserts with compatible seatings and clamping systems; ensure the holder geometry aligns with the P4840P-1R-E77 WN15 dimensions and chip evacuation needs. For complex alloys or unusual feed rates, always validate choices against the manufacturer’s technical information.

For fast availability and specific application advice on Walter Tools inserts such as the P4840P-1R-E77 WN15, contact Metav Werkzeuge for tailored recommendations and prompt supply

Technical data

• SKU: P4840P-1R-E77-WN15-WALTER
• Designation: P4840P-1R-E77 WN15
• Product type: Drill/reaming indexable insert
• Manufacturer: Walter Tools
• Series: Walter cutting grade series - open
• Chipbreaker: 1R-E77
• Material note: uncoated carbide (check product matrix)
• UID: P4840P-1R-E77-WN15-WALTER

Facts

• Grade: WN15
• Coating: uncoated carbide
• Application: drilling and reaming

Special features

• Uncoated carbide substrate
• 1R-E77 chipbreaker for controlled chips
• Series: Walter cutting grade - open
• Workpiece suitability: verify via product matrix

FAQ

Which materials is the P4840P-1R-E77 WN15 suitable for?
The P4840P-1R-E77 WN15 insert is produced in an uncoated carbide grade; suitability for specific materials should be checked against the product matrix supplied by the manufacturer to ensure optimal performance.

Is the insert supplied with a coating?
The WN15 grade used for this insert is uncoated carbide, which can be preferable for applications where a coating might compromise chip flow or adhere under certain cutting conditions.

What cutting tasks are recommended for this insert?
This indexable insert is intended for drilling and reaming tasks where controlled chip formation and replaceable cutting edges support continuous operation and lower tooling downtime.

How should chip control be optimised for best results?
The 1R-E77 chipbreaker promotes segmented chips; pairing the insert with appropriate feeds and speeds according to the product matrix will ensure effective chip evacuation and extend edge life.

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 trademarks are mentioned for explanatory purposes only. There is no connection between our company and the mentioned brands. The offered item is an original, factory-new product of Walter Tools.