Accupro 12182894 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 12182894 is a solid carbide corner radius end mill designed for precision milling of ferrous and non-ferrous metals in CNC machining centers and manual mills. The tool features a 3/8-inch diameter with a 0.03-inch corner radius, a 4-flute configuration, and an AlTiN coating that extends tool life in high-temperature cutting conditions. The 40-degree helix angle promotes smooth chip evacuation and reduces cutting forces. With a micrograin carbide substrate, this end mill holds tight tolerances and resists wear in demanding production environments. It is intended for use by machinists and toolmakers in job shop, aerospace, die and mold, and general precision machining applications.

This end mill is suited for slotting, profiling, and contouring operations where a defined corner radius is required to reduce stress concentration at part features. The stub-length configuration provides rigidity in setups where reach is not a limiting factor. The centercutting design allows plunge entry, giving the machinist flexibility in toolpath programming. Right-hand flute direction and right-hand cutting orientation are standard for conventional CNC spindle setups.

Key Features

• AlTiN coating for extended tool life in high-heat cutting of hardened steels and alloys
• Micrograin solid carbide substrate for superior hardness and edge retention
• 0.03-inch corner radius reduces stress risers and improves surface finish at part transitions
• Centercutting geometry permits direct plunge entry without a pre-drilled hole
• 40-degree helix angle promotes efficient chip evacuation and smooth cutting action
• Single-end stub-length design maximizes rigidity in short-reach applications

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 3/8-inch straight shank end mill holder or collet.

Installation Notes

This end mill is installed by machinists into a compatible 3/8-inch collet, end mill holder, or hydraulic chuck on a milling machine spindle. Ensure the machine is fully powered down and the spindle is locked before changing tooling. Verify holder runout is within acceptable limits before commencing cuts, as excessive runout accelerates edge wear and degrades dimensional accuracy. Follow applicable shop safety procedures and machine manufacturer guidelines for tool clamping torque and stick-out length.