Kennametal 4079271 Corner Radius End Mill 1/2 in Altin

Product Description

The KENNAMETAL 4079271 is a solid carbide corner radius end mill designed for high-performance milling in demanding industrial and production environments. It features a 1/2 inch diameter, a 1-1/2 inch length of cut, and a 4 inch overall length, making it well suited for extended-reach applications. The tool carries an AlTiN (aluminum titanium nitride) PVD coating that improves heat resistance and wear life at elevated cutting speeds. With four flutes, a 38-degree high-helix geometry, and a 0.015 inch corner radius, it is built for both roughing and finishing passes on ferrous and exotic alloy workpieces. It is center cutting and right-hand cutting with a straight cylindrical shank.

This end mill is appropriate for machining steel, stainless steel, cast iron, superalloys, titanium, and hard materials. It fits into the KENNAMETAL UADE series and is compatible with standard end mill toolholders accepting a 1/2 inch straight-cylindrical shank. The extended reach design makes it effective in pockets, slots, and contoured features where standard-reach tooling cannot clear the workpiece or fixture. Material removal type covers both roughing and finishing operations, reducing the need for tool changes in mixed-operation setups.

Key Features

• AlTiN PVD coating for improved heat resistance and tool life in high-speed cuts
• Solid submicron carbide substrate for rigidity and edge stability
• 0.015 inch corner radius reduces edge chipping and extends tool life on contoured features
• 38-degree high-helix angle promotes efficient chip evacuation and smooth cutting action
• Center cutting capable — supports plunge entry without a pre-drilled pilot hole
• Extended reach geometry with 1-1/2 inch reach length for deep-pocket and slot applications
• Right-hand flute direction and right-hand cutting for use in standard CNC machining centers

Compatibility

Designed for use with standard end mill toolholders accepting a 1/2 inch straight-cylindrical shank. Rated for primary workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials (ISO material codes P, M, K, S, H).

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the toolholder. Verify toolholder runout with a dial indicator before commencing a cut, as excessive runout accelerates edge wear on carbide tooling. Follow the machine tool manufacturer and toolholder manufacturer torque specifications when securing set screws or collet nuts — do not over-tighten.