Kennametal 6113139 Corner Radius End Mill 6 Flute Altin

Product Description

The KENNAMETAL 6113139 is a solid carbide corner radius end mill designed for high-performance finishing operations in demanding materials. Built to the UJDE series standard, this single-end, centercutting tool features a 0.5-inch mill diameter, six flutes, and a 0.12-inch corner radius that produces consistent edge blending and reduces stress concentrations at part corners. The AlTiN PVD coating provides thermal resistance and hardness retention at elevated cutting temperatures. With an extra-long 4.5-inch overall length and 2.5-inch length of cut, it reaches deep pockets and tall-wall features that standard-length end mills cannot access. Licensed machinists and CNC operators working in production or job-shop environments are the primary users of this tool.

This end mill is engineered for finishing passes in steel, stainless steel, superalloys, titanium, and hard materials. The close-pitch, six-flute configuration supports high feed rates during finishing while the right-hand cut and right-hand spiral flute geometry suit standard CNC machining center spindle rotation. The straight cylindrical shank is compatible with standard end mill toolholders. The submicron carbide grade and high helix style contribute to smooth surface finishes and stable tool life in difficult-to-machine workpiece materials including hardened steels and nickel-based superalloys.

Key Features

• 0.12-inch corner radius for consistent edge blending and reduced stress risers
• Six-flute close-pitch design supports high material removal rates during finishing
• AlTiN PVD coating for high-temperature resistance in steel and superalloy cutting
• Extra-long reach: 4.5-inch OAL with 2.5-inch length of cut for deep pocket access
• Submicron carbide grade for improved wear resistance in hard and abrasive materials
• Centercutting capability allows axial plunge entry when required
• Right-hand cut and right-hand spiral compatible with standard CNC toolholders

Compatibility

Designed for use with standard end mill toolholders. The 0.5-inch straight cylindrical shank fits collet chucks, hydraulic chucks, and shrink-fit holders bored to 0.5 inches. Rated for primary workpiece materials including steel, stainless steel, superalloys, titanium, and hard materials per material codes P, M, S, and H.

Installation Notes

Installation and tool changes must be performed by qualified CNC operators or machinists with the spindle fully stopped and machine in a safe, locked-out state. Ensure the toolholder bore and shank are clean and free of chips or burrs before seating the end mill. Confirm runout with a dial indicator before initiating cuts, as runout in excess of acceptable tolerances will accelerate tool wear and degrade surface finish. Coolant-through is not supported by this tool; direct external coolant or air blast to the cutting zone as required by the application.