Kennametal 4067266 Corner Radius End Mill 5/8 in 4 Flute

Product Description

The KENNAMETAL 4067266 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining environments. Built to the HPHV series specification, it carries a 0.625 inch mill diameter with a 0.03 inch corner radius and four right-hand spiral flutes with a high helix angle of 38 degrees. The AlTiN PVD coating provides thermal resistance and extended tool life when cutting hard and abrasive workpiece materials. At 4 inches overall length with a 2.125 inch length of cut, this is a long-reach, single-end centercutting tool suited for deep-cavity and profiling operations. It installs in standard 5/8 inch tool holders and accepts Weldon flat shank clamping. Machining professionals in job shops, production facilities, and aerospace or moldmaking environments rely on this geometry for both roughing and finishing passes.

This end mill is intended for use with steel, stainless steel, cast iron, and hard materials, corresponding to material application codes P, M, K, and H. The extended reach and long flute length make it well-suited for machining deep slots, pockets, and contoured walls where shorter tools cannot reach. It is compatible with EM-CV Form AD and EM IN-HSK Form A tooling systems as specified by the manufacturer. Normal pitch and a right-hand cutting direction provide consistent chip evacuation across supported workpiece materials. This tool is sold individually with a minimum order quantity of one.

Key Features

• 0.03 inch corner radius reduces stress concentration at cutting edges and improves surface finish on profiled walls
• AlTiN PVD coating provides elevated-temperature hardness for cutting steel, stainless steel, cast iron, and hard materials
• Four right-hand spiral flutes with 38-degree high helix angle for aggressive chip evacuation and smooth cutting action
• Centercutting geometry allows plunge entry and ramp-in moves without a pre-drilled pilot hole
• Weldon flat shank with 5/8 inch diameter shank ensures secure clamping and reduced tool pull-out risk
• Extended reach with 2.125 inch length of cut supports deep-pocket and long-reach machining operations
• Submicron carbide grade construction provides uniform hardness and fracture resistance across the cutting zone

Compatibility

Compatible with EM-CV Form AD and EM IN-HSK Form A toolholding systems per manufacturer specification. Designed for use on CNC machining centers equipped with 5/8 inch tool holders accepting a Weldon flat shank. Suitable for primary workpiece materials steel, stainless steel, cast iron, and hard materials.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before loading or removing the end mill. Seat the Weldon flat fully in the holder and torque the set screw to the toolholder manufacturer specification before engaging the spindle. Do not exceed the tool overhang or depth-of-cut parameters recommended for the HPHV series for the target workpiece material.