Accupro 12185369 Ball End Mill 0.25 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 12185369 is a solid carbide ball end mill designed for precision milling of contoured surfaces, cavities, and complex 3D profiles. Built with four flutes and a 40-degree helix angle, it promotes efficient chip evacuation and smooth cutting action in a range of ferrous and non-ferrous materials. The AlTiN coating provides thermal resistance and extended tool life in demanding, high-speed machining applications. At 0.25 inches in diameter with a 0.5 inch length of cut, this end mill is suited for fine-detail work where rigidity and edge sharpness are critical. Machinists and toolroom technicians install this tool in CNC machining centers and manual mills.

This end mill is configured as a double-end tool, offering two cutting ends on a single shank to extend usable tool life and reduce per-part tooling costs. With a 0.25 inch shank diameter and 2.5 inch overall length, it fits standard ER and collet-style toolholders commonly found in vertical machining centers. The stub-length classification keeps deflection low, making it well suited for semi-finish and finish passes on hardened steels, stainless, titanium, and heat-resistant alloys where AlTiN coating performance is most effective.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard-material applications
• AlTiN coating for high-temperature resistance and extended tool life
• Four-flute, right-hand spiral design promotes efficient chip flow and smooth surface finish
• 40-degree helix angle reduces cutting forces and improves finish quality
• Double-end configuration maximizes value per tool
• Stub-length geometry minimizes deflection during finish passes

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting 0.25 inch shank diameter collet or ER-style toolholders.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing tooling. Seat the shank fully into the collet or toolholder to the recommended engagement depth before tightening. Verify runout with a dial indicator before beginning a cut to confirm proper seating and minimize premature tool wear.