Kennametal 4067258 Corner Radius End Mill 5/8in 4 Flute

Product Description

The KENNAMETAL 4067258 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining environments. With a 5/8-inch cutting diameter, a 0.06-inch corner radius, and an AlTiN PVD coating, this tool handles both roughing and finishing operations in a single setup. The 4-flute, right-hand spiral configuration with a high-helix style promotes chip evacuation and surface finish quality. Overall length is 3.5 inches with a 1.25-inch length of cut. A Weldon flat shank provides positive drive and reduces pullout risk under heavy loads. Licensed machinists and tooling specialists working in production or job-shop environments will find this tool suited to aggressive cutting cycles.

This end mill is rated for use in steel, stainless steel, cast iron, and hard materials, covering ISO material codes P, M, K, and H. The long-reach geometry and extended reach design make it well suited for deep-pocket milling, slotting, and profile work where standard-length tools cannot reach the workpiece without interference. It is compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems as noted by the manufacturer. The single-end, centercutting design supports both plunge entry and lateral passes without requiring a separate roughing tool.

Key Features

• AlTiN PVD coating provides high heat resistance for dry or semi-dry cutting in ferrous and hard materials
• Solid submicron carbide grade delivers wear resistance and edge integrity at elevated cutting speeds
• 0.06-inch corner radius reduces stress concentration at the cutting edge and improves tool life in interrupted cuts
• Weldon flat shank ensures secure clamping and minimizes slippage under high radial loads
• Centercutting geometry allows direct plunge entry without pre-drilling
• Extended reach and long flute length support deep-pocket and cavity milling applications

Compatibility

Compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems as specified by the manufacturer. Designed for use in steel, stainless steel, cast iron, and hard material applications per ISO material codes P, M, K, and H.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician familiar with CNC or manual milling equipment. Ensure the machine spindle and toolholder are clean and free of debris before seating the Weldon flat shank. Tighten the setscrews to the toolholder manufacturer specification using a calibrated torque wrench. Confirm runout is within acceptable limits before initiating a cutting cycle.