Kennametal 4067326 Corner Radius End Mill 1in 4 Flute Altin

Product Description

The KENNAMETAL 4067326 is a solid carbide corner radius end mill engineered for high-performance milling in demanding ferrous and hard-material applications. It features a 1-inch cutting diameter, a 3-inch length of cut, and a 0.03-inch corner radius that reduces stress concentration at the cutting edge and extends tool life on hardened workpieces. The AlTiN PVD coating provides oxidation resistance and thermal hardness at elevated cutting temperatures. With an overall length of 6 inches and a 1-inch Weldon flat shank, this tool is designed for rigidity in extended-reach setups. It is part of the HPHV series, intended for use by machinists and tool-room professionals in CNC milling operations.

This end mill is suited for both roughing and finishing passes on steel, stainless steel, cast iron, and hard materials. The extended reach geometry makes it appropriate for deep-pocket milling, cavity work, and applications where standard-length tools cannot access the feature. The Weldon flat shank provides positive drive engagement in compatible tool holders, reducing pullout risk under high chip-load conditions. Compatible holders listed by the manufacturer include EM-CV Form AD and EM IN-HSK Form A tool holders.

Key Features

• 1-inch cutting diameter with 0.03-inch corner radius for reduced edge chipping and improved surface finish
• AlTiN PVD coating for high-temperature oxidation resistance in ferrous and hard-material cutting
• 3-inch length of cut with extended reach geometry for deep-pocket and cavity milling
• 4-flute, single-end, right-hand cutting configuration with high helix style
• Weldon flat shank eliminates pullout risk in driven tool holders
• Rated for roughing and finishing in steel, stainless steel, cast iron, and hard materials
• Submicron carbide grade for improved toughness and wear resistance

Compatibility

Designed for use with EM-CV Form AD and EM IN-HSK Form A tool holders as specified by the manufacturer. Suitable for CNC machining centers requiring a 1-inch shank, right-hand cutting end mill for steel, stainless steel, cast iron, and hard material applications.

Installation Notes

Installation should be performed by a qualified machinist familiar with CNC tooling and holder interface standards. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before inserting the tool. Torque the Weldon flat set screw according to the tool holder manufacturer specifications. Verify runout with a dial indicator after clamping before initiating a cut.