Accupro 36446664 Ball End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 36446664 is a solid carbide ball end mill designed for high-performance milling operations in demanding shop environments. With a 3/8 inch (0.3750 inch) mill diameter and a 0.3490 inch length of cut, this single-end tool is built for precision contouring, profiling, and finishing passes on hardened and abrasive workpiece materials. The AlTiCrN coating provides excellent heat resistance and wear protection, making it well suited for dry or semi-dry cutting conditions. Four flutes deliver a strong finish and efficient chip evacuation. A variable index design reduces chatter and improves surface finish quality. Machinists and tool and die professionals install and operate this end mill in CNC machining centers and manual mills.

This ball end mill is appropriate for milling ferrous and non-ferrous materials where a high-hardness, wear-resistant tool is required. The AlTiCrN coating performs well in hardened steels, stainless steel, cast iron, and high-temperature alloys. The 3/8 inch shank diameter fits standard ER collet chucks, end mill holders, and shrink-fit toolholders commonly found in job shops and production machining environments. The 2.5 inch overall length provides adequate reach for typical cavity and contour work without excessive overhang.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• AlTiCrN coating for elevated heat resistance and extended tool life in dry cutting
• 4-flute geometry balances chip load capacity with finish quality
• Variable index flute spacing reduces harmonic chatter during profiling cuts
• 0.3490 inch length of cut with 0.2500 inch neck length for controlled reach into pockets
• Single-end design with 3/8 inch shank for compatibility with standard toolholding systems

Compatibility

Designed as a replacement-style solid carbide ball end mill with a 3/8 inch shank diameter, compatible with standard ER collet chucks, end mill holders, and other 3/8 inch bore toolholding systems used in CNC and manual milling machines.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing the end mill from the toolholder. Verify collet or holder bore condition and cleanliness before seating the shank to the correct insertion depth. Follow the toolholder manufacturer torque specifications when tightening set screws or collet nuts — do not overtighten, as this can damage the shank or reduce runout performance.