Accupro 317240 Corner Radius End Mill 5/8 in 8 Flute Carbide

Product Description

The ACCUPRO 317240 is a solid carbide corner radius end mill designed for high-performance milling in demanding metal-cutting applications. It features an 8-flute geometry with a 40-degree helix angle and a 0.0300 inch corner radius that reduces stress concentrations at workpiece corners and extends tool life. The cutting diameter is 0.6250 inches with a 1.6250 inch length of cut. An AlCrTiN coating provides heat resistance and wear protection, making this end mill well-suited for hardened steels, stainless alloys, and high-temperature materials. Centercutting capability allows plunge entry without pre-drilling. Machining professionals and tool-and-die shops rely on this type of tooling for precision profiling and pocketing operations.

This end mill is used in CNC machining centers and manual mills where tight tolerances and fine surface finishes are required. It is appropriate for profiling, slotting, and finishing passes in ferrous metals, hardened steels, and similar materials. The 8-flute design supports higher feed rates and improved surface finish compared to lower-flute-count end mills of the same diameter. The straight cylindrical shank fits standard ER collets and end mill holders with a 5/8 inch bore.

Key Features

• AlCrTiN coating for heat resistance and extended tool life in hard materials
• 8-flute spiral design supports high feed rates and improved surface finish
• 0.0300 inch corner radius reduces notching and workpiece stress at corners
• Centercutting design permits direct plunge entry
• 40-degree helix angle promotes chip evacuation and smooth cutting action
• Micrograin solid carbide construction for rigidity and wear resistance

Compatibility

Designed as an OEM-style replacement or direct-use tool for CNC machining centers and manual mills accepting a 5/8 inch straight cylindrical shank in standard collet chucks or end mill holders.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Seat the shank to the full recommended engagement depth in the collet or holder to minimize runout and tool pullout risk. Verify shank diameter tolerance compatibility with the holder before use, and inspect the cutting edges for chips or damage prior to each setup.