Kennametal 4046386 Corner Radius End Mill 12mm 5 Flute

Product Description

The KENNAMETAL 4046386 is a solid carbide corner radius end mill designed for high-performance milling in demanding metal-cutting applications. It features a 12 mm cutting diameter, a 26 mm length of cut, and a 0.75 mm corner radius that reduces edge chipping and extends tool life on hard workpiece materials. The tool carries an AlTiN PVD coating applied via physical vapor deposition, which improves heat resistance and wear performance at elevated cutting temperatures. With five flutes and a high helix spiral flute geometry, the 4046386 delivers efficient chip evacuation and smooth surface finishes in both roughing and finishing passes. It is intended for installation by machinists and tooling technicians in CNC machining centers.

This end mill is rated for use on steel, stainless steel, cast iron, and hard materials, making it well suited to precision mold, die, and general machining work where corner geometry control is critical. The straight-cylindrical shank with a 12 mm diameter is compatible with ER single angle standard collets, supporting straightforward tool setup in standard CNC spindle configurations. The single-end design with a right-hand cutting direction and right-hand flute spiral is the conventional configuration for vertical and horizontal machining center use. The UCDE series designation places it within a submicron carbide grade tooling family optimized for P, M, K, and H material application codes.

Key Features

• 12 mm cutting diameter with 0.75 mm corner radius for edge strength and controlled corner geometry
• 5-flute spiral design supports efficient chip flow in both roughing and finishing operations
• AlTiN PVD coating provides thermal and oxidation resistance in high-speed steel and hard material cutting
• Submicron carbide grade substrate for improved toughness and edge retention
• Straight-cylindrical 12 mm shank fits ER single angle standard collets
• Rated for steel, stainless steel, cast iron, and hard materials (ISO application codes P, M, K, H)

Compatibility

Designed for use with ER single angle standard collets. Rated for primary workpiece materials including steel, stainless steel, cast iron, and hard materials corresponding to ISO material application codes P, M, K, and H.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or CNC tooling technician with the spindle fully stopped and the machine control in a safe state. Secure the shank in a properly sized ER collet chuck torqued to the collet manufacturer's specification. Verify runout with a dial indicator before initiating a cutting program, as excess runout accelerates edge wear on multi-flute carbide tooling. Consult the machine tool and toolholder manufacturer guidelines for maximum RPM and feed rate limits appropriate to this diameter and coating.