Accupro 72066624 Corner Radius End Mill 5/16 in 6 Flute

Product Description

The ACCUPRO 72066624 is a solid carbide corner radius end mill designed for high-performance milling in demanding applications. With a 5/16 inch (0.3125 inch) mill diameter and six flutes, it delivers smooth cutting action and efficient chip evacuation. The AlTiN+ coating provides elevated heat resistance and extended tool life when working in high-temperature alloys and other abrasive materials. A 0.0200 inch corner radius reduces stress concentration at the cutting edge, helping to prevent chipping during aggressive cuts. This tool is intended for use by machinists and tooling professionals in precision machining environments.

This end mill is built for milling high-temperature alloys (material code S), including nickel-based superalloys, titanium, and similar hard-to-machine materials common in aerospace, medical, and power generation work. The 1 inch length of cut and 3 inch overall length suit a range of roughing and finishing passes. Variable helix and variable index geometry reduce harmonic vibration during cutting, which is especially useful in long-reach or tight-tolerance setups.

Key Features

• AlTiN+ coating for high heat resistance and extended tool life in abrasive materials
• Variable helix and variable index design reduces chatter and improves surface finish
• 0.0200 inch corner radius protects the cutting edge and reduces stress risers
• Six-flute configuration supports higher feed rates and improved finish on ferrous and exotic alloys
• Centercutting geometry allows plunge entry into workpiece
• Single-end, right-hand cut with right-hand flute direction for standard CNC mill setups

Compatibility

Designed as an OEM-style solid carbide end mill replacement for 5/16 inch shank toolholders used in CNC machining centers and manual mills requiring a right-hand, single-end corner radius tool.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the spindle is fully stopped and the machine is in a safe lockout state before changing tooling. Seat the 5/16 inch shank fully into a matching collet or end mill holder and torque the retention hardware per the toolholder manufacturer's specifications. Confirm runout with a dial indicator before beginning a cut, as excess runout accelerates wear on carbide tooling.