Accupro 12185373 Ball End Mill 5/16 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 12185373 is a solid carbide ball end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 5/16-inch diameter with a 1/2-inch length of cut, a 40-degree helix angle, and a 4-flute spiral configuration. The double-end design extends tool life by providing two usable cutting ends. The bright uncoated finish suits general-purpose machining where coating is not required or where the workpiece material is incompatible with coated substrates. Machinists and toolroom operators rely on this tool for profiling, slotting, and contour milling passes where a ball nose geometry is needed.

This end mill is suited for CNC machining centers and manual vertical mills running stub-reach applications. The 5/16-inch shank diameter matches the cutter diameter, allowing direct chuck or collet mounting without adapter reduction. The 2-1/2-inch overall length keeps the tool compact for rigid setups, minimizing deflection in light to moderate cuts. It is appropriate for job shops, production toolrooms, and maintenance machining environments where a reliable carbide ball end mill is a standard line item.

Key Features

• Solid carbide construction for rigidity and wear resistance compared to HSS
• 4-flute spiral configuration for improved finish quality and chip evacuation
• 40-degree helix angle supports smooth cutting action in profiling operations
• Double-end design provides two cutting ends per tool, extending usable tool life
• Bright uncoated finish for compatibility with a broad range of workpiece materials
• Stub length (2-1/2 inches OAL) promotes rigidity and reduces deflection

Compatibility

Designed for use in standard CNC machining centers and manual mills accepting a 5/16-inch collet or end mill holder. Compatible with right-hand spindle rotation setups. No specific OEM system compatibility data was provided with this SKU.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the shank fully within the collet or end mill holder to the manufacturer-recommended engagement depth, ensuring no runout before beginning a cut. Verify spindle direction is set to right-hand rotation before engaging the workpiece. Inspect both cutting ends for chipping or wear before use, and replace the tool when edge condition degrades to avoid poor surface finish or workpiece damage.