Kennametal 3331484 Corner Radius End Mill 3/8 in 4 Flute Altin

Product Description

The KENNAMETAL 3331484 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. With a 3/8-inch diameter and a 0.03-inch corner radius, this tool reduces stress concentrations at the cutting edge and extends tool life in hardened and abrasive workpiece materials. The AlTiN coating provides thermal resistance and oxidation protection at elevated cutting temperatures. At 2.5 inches overall length with a 7/8-inch length of cut, it fits standard toolholding setups used by machinists and CNC operators across job shop and production environments.

This end mill is suited for profiling, slotting, and contouring operations in ferrous metals, stainless steels, and high-temperature alloys. The HPRST series geometry is built for high-speed and high-feed strategies where rigidity and edge retention are critical. The centercutting design allows plunge entry, giving operators flexibility in complex 3D toolpaths. It is a single-end, right-hand cut, right-hand flute tool with a regular length profile, making it a direct fit for general-purpose CNC milling applications in both prototype and production settings.

Key Features

• 0.03-inch corner radius reduces edge chipping and workpiece stress risers
• AlTiN coating delivers high thermal and oxidation resistance for extended run times
• Micrograin solid carbide substrate provides rigidity and wear resistance
• Centercutting capability allows plunge milling and ramping without a pre-drilled hole
• 4-flute, 40-degree helix geometry balances chip evacuation and surface finish
• Right-hand cut and right-hand flute configuration for standard CNC spindle use

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers accepting 3/8-inch shank end mills in standard ER, hydraulic, or shrink-fit toolholders.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool is secured to the correct torque specification for the toolholder type in use before running. Verify runout with a dial indicator after seating the shank to confirm proper engagement. Consult the machine tool builder guidelines and applicable shop safety procedures before operation.