Accupro 311759 Corner Radius End Mill 5/8 in Carbide

Product Description

The ACCUPRO 311759 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hardened materials. Built to Series HS standards, it features a 5/8-inch diameter, five flutes, and an AlCrTiN coating that provides thermal stability and wear resistance in demanding cutting environments. The 38-degree variable-index helix promotes smooth chip evacuation and reduces chatter. With a 2.5-inch length of cut and 5-inch overall length, this centercutting tool handles both plunge and peripheral milling. It is installed and operated by machinists and tooling professionals on CNC milling equipment.

This end mill is suited for high-speed machining of steel, stainless, cast iron, and similar materials where surface finish and dimensional accuracy are critical. The corner radius geometry at 0.060 inches reduces stress concentration at the cutting edge and extends tool life compared to square-end profiles. The right-hand cutting direction and right-hand flute spiral are standard for conventional CNC mill setups. Single-end configuration means the full length of cut is available at one end of the shank.

Key Features

• AlCrTiN coating for heat resistance and extended tool life in hard materials
• 5-flute design increases feed rate potential and improves surface finish
• Variable index flute spacing reduces harmonic vibration during cut
• Centercutting geometry allows direct plunge entry without a pilot hole
• 0.060-inch corner radius reduces edge chipping and stress at the tool tip
• Micrograin solid carbide substrate for rigidity and dimensional stability

Compatibility

Designed as a direct-fit replacement for Series HS corner radius end mills with a 5/8-inch shank diameter on standard CNC milling machines and machining centers accepting straight-shank toolholders.

Installation Notes

Installation and tool changes must be performed by qualified machining personnel with the spindle fully stopped and the machine in a locked-out state per applicable machine tool safety procedures. Use a calibrated toolholder with appropriate runout tolerance for the 5/8-inch shank diameter to preserve coating integrity and dimensional accuracy. Do not exceed manufacturer-recommended speeds and feeds for the workpiece material and coating type. Inspect the corner radius for chipping before each use.