Accupro 12185363 Ball End Mill 0.2188 in 4 Flute Carbide

Product Description

The ACCUPRO 12185363 is a solid carbide ball end mill designed for precision milling operations in metalworking and machining applications. This double-end tool features a 0.2188-inch (7/32 inch) cutting diameter, a 40-degree helix angle, and an AlTiN (aluminum titanium nitride) coating that provides elevated heat and wear resistance during high-speed cuts. With 4 spiral flutes and a right-hand cutting direction, it delivers consistent chip evacuation and surface finish. The double-end configuration extends tool life by offering two usable cutting ends per tool. It is handled and installed by machinists and CNC tooling technicians in shop environments.

This end mill is suited for milling ferrous and non-ferrous metals including hardened steels, stainless steel, and titanium alloys where thermal stability and edge retention are critical. The AlTiN coating makes it a strong choice for dry or semi-dry cutting conditions at elevated speeds. The stub-length flute type and 0.4375-inch length of cut (7/16 inch) make it well-suited for slotting, profiling, and contour milling in confined geometries. The 1/4-inch shank diameter is compatible with standard collet chucks and end mill holders on vertical machining centers and CNC mills.

Key Features

• 0.2188-inch (7/32 inch) ball nose cutting diameter for precise radius profiling
• AlTiN coating provides superior heat resistance and extended tool life in hard materials
• 4 right-hand spiral flutes with stub-length geometry for rigidity in tight cuts
• 40-degree helix angle promotes smooth chip flow and reduces cutting forces
• Double-end design yields two cutting ends per tool for added value
• Solid carbide construction maintains dimensional accuracy under thermal load

Compatibility

Designed for use in standard 1/4-inch collet chucks, shrink-fit holders, and end mill holders on CNC vertical machining centers and manual knee mills. Suitable for milling ferrous metals, hardened steels, stainless, and titanium in dry or minimal-lubrication environments.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and the control in a safe, locked state. Secure the 1/4-inch shank in a clean, undamaged collet or holder and torque to the holder manufacturer specification. Inspect the AlTiN coating and cutting edges for chips before mounting. Follow applicable shop safety protocols and machine manufacturer guidelines when setting tool offsets and runout.