Accupro 311528 Corner Radius End Mill 3/8 in 5 Flute

Product Description

The ACCUPRO 311528 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining environments. It features a 3/8-inch diameter, a 0.020-inch corner radius, and a 5-flute variable-index geometry that reduces harmonic vibration during cutting. The AlCrTiN coating provides oxidation resistance and hardness retention at elevated temperatures, making this end mill well suited for cutting ferrous and hardened materials. With a 2-inch overall length and a 1/2-inch length of cut, it fits standard toolholders and collet chucks used in CNC vertical and horizontal machining centers. Installation and setup are performed by machinists and CNC operators.

This end mill is appropriate for profiling, slotting, and finishing operations in ferrous metals, stainless steel, and high-temperature alloys. The micrograin solid carbide substrate and right-hand cutting direction support aggressive material removal while maintaining edge integrity. The center-cutting geometry allows direct plunge entry without a pre-drilled pilot hole, which adds flexibility in programming. The 38-degree helix angle promotes efficient chip evacuation in moderate-to-deep cuts.

Key Features

• AlCrTiN coating for high heat resistance and extended tool life in ferrous materials
• 5-flute variable-index design reduces chatter and harmonic vibration
• Micrograin solid carbide substrate for rigidity and edge retention
• Center-cutting capable — allows direct plunge entry
• 38-degree helix angle promotes chip evacuation in slotting and profiling
• 0.020-inch corner radius reduces stress concentration and improves corner finish

Compatibility

Designed as a single-end replacement-style corner radius end mill compatible with standard 3/8-inch collet chucks and toolholders used in CNC machining centers requiring a 3/8-inch shank diameter.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully powered down and the tool is secured with the correct collet or toolholder before tightening. Verify runout with a dial indicator after installation to confirm proper seating. Consult machine and toolholder manufacturer torque specifications when tightening retention knobs or collet nuts.