Walter P4840P-7R-E57 Indexable Carbide Insert

Description:

The Walter P4840P-7R-E57 Grade WKP35 Carbide Insert is used in industrial CNC drilling systems for high-performance holemaking, precision drilling, and efficient material removal in metalworking applications. Commonly installed in Walter Xtra-tec® indexable drill bodies, CNC machining centers, production manufacturing equipment, and automated drilling systems. Maintenance teams, machinists, and manufacturing engineers use this insert for tooling replacement, production drilling, process optimization, and maintaining accurate hole quality in demanding machining environments.

Applications:

The Walter P4840P-7R-E57 WKP35 carbide insert is designed for industrial drilling operations requiring high wear resistance, reliable chip control, and stable cutting performance across steel, alloy steel, and cast iron materials. It is frequently utilized in automotive manufacturing, aerospace component production, heavy equipment machining, steel fabrication facilities, energy sector machining, and CNC production environments where dimensional accuracy, extended insert life, and reduced machine downtime are critical for maximizing productivity and drilling efficiency. The E57 geometry is designed as a universal insert geometry for a wide range of drilling conditions and materials.

Technical Specifications:

• Brand: Walter
• Part Number: P4840P-7R-E57
• Grade: WKP35
• Product Type: Carbide Drill Insert
• Insert Style: P4840P Square Indexable Drill Insert
• Insert Material: Carbide
• Grade Classification: WKP35
• Geometry: E57 Universal Geometry
• Number of Cutting Edges: 4
• Cutting Edge Length: 0.552 inch
• Insert Thickness: 0.218 inch
• Corner Radius: 0.031 inch
• Clearance Angle: 11°
• Function: Precision drilling and holemaking
• Application Type: CNC and production drilling operations
• Designed For: Walter Xtra-tec® indexable drill systems
• Compatible Equipment: CNC machining centers and indexable drill bodies
• Cutting Application: Steel, alloy steel, and cast iron machining
• Construction Type: Coated carbide insert
• Industrial Use: Production machining and tooling replacement
• Performance Feature: High wear resistance and extended tool life
• Usage Purpose: High-efficiency drilling and material removal operations

Common Replacements:

• Sandvik Coromant Indexable Drill Insert
• Kennametal Carbide Drill Insert
• Seco Indexable Drill Insert