Accupro 32228785 Ball End Mill 1/4 in 4 Flute Carbide

Product Description

The ACCUPRO 32228785 is a solid carbide ball end mill designed for precision milling operations in metalworking and machining applications. With a 0.2500 inch mill diameter and a 0.2330 inch length of cut, this single-end tool delivers tight-tolerance profiling, contouring, and finishing passes. The 4-flute geometry combined with a variable index design reduces harmonic vibration during cuts, improving surface finish and tool life. An AlTiCrN coating provides thermal resistance and wear protection, making this end mill well-suited for hardened steels, stainless alloys, and other demanding workpiece materials. It is installed and operated by machinists and CNC programmers in production and job-shop environments.

This ball end mill is used in CNC machining centers and manual milling machines for 3D contouring, slot milling, and finish profiling on ferrous and non-ferrous metals. The 0.2500 inch shank diameter fits standard collet chucks and end mill holders in that size range. With a 2.5 inch overall length and a 0.2500 inch neck length, it offers sufficient reach for most shallow-to-moderate-depth cavity work without excessive overhang. It is appropriate for both prototype and production-run applications where surface quality and dimensional accuracy are required.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding materials
• AlTiCrN coating for elevated thermal and oxidation resistance during high-speed cutting
• 4-flute design for improved finish quality and higher feed rates versus 2-flute versions
• Variable index flute spacing reduces chatter and harmonic vibration
• Ball nose geometry enables 3D contouring and radius profiling
• Single-end configuration with a 0.2500 inch shank for standard toolholder compatibility

Compatibility

Designed as an OEM-style replacement and standard production end mill compatible with CNC machining centers and manual mills accepting a 0.2500 inch shank diameter collet or end mill holder.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the machine spindle is fully stopped and de-energized before mounting or removing the end mill. Seat the shank fully in the collet or holder and torque the retention nut to the toolholder specification. Verify runout with a dial indicator before beginning a production cycle, as excessive runout accelerates wear on a carbide tool.