Accupro 12185313 Ball End Mill 0.25 in 4 Flute Carbide

Product Description

The ACCUPRO 12185313 is a solid carbide ball end mill designed for precision milling operations in metal, composite, and hard-material applications. With a 0.25-inch diameter and a 40-degree helix angle, this tool delivers efficient chip evacuation and smooth cutting action across a range of workpiece materials. The four-flute, right-hand spiral configuration provides rigidity and surface finish quality suited to finishing and semi-finishing passes. The bright, uncoated carbide construction makes it well-suited for non-ferrous metals and materials where coating adhesion or heat buildup is a concern. Licensed machinists and CNC operators are the primary users of this tool.

This end mill fits standard applications requiring a 3/8-inch shank in CNC machining centers and manual mills. The double-end design extends tool life by offering two usable cutting ends, reducing per-operation tooling cost. With a 0.625-inch length of cut (LOC) and a 3-inch overall length (OAL), this tool is suited for regular-reach slotting, profiling, and contouring operations where extended reach is not required. It performs well in aluminum, brass, plastics, and similar workpiece materials in both production and job-shop environments.

Key Features

• 0.25-inch ball end cutting diameter for precise radius profiling
• 4-flute, right-hand spiral flute design for rigidity and finish quality
• 40-degree helix angle promotes efficient chip evacuation
• Double-end configuration provides two cutting ends per tool
• Solid carbide construction for hardness and wear resistance
• Bright, uncoated finish — no coating buildup risk on non-ferrous materials

Compatibility

Designed as a standard replacement or production end mill for CNC machining centers and manual mills accepting a 3/8-inch straight shank toolholder.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the 3/8-inch shank in a properly sized collet or end mill holder and torque the toolholder to the machine manufacturer's specification. Verify spindle speed and feed rate settings against material-specific cutting data before engaging the workpiece. Inspect both cutting ends for chipping or wear before use and between tool changes.