Accupro 12179236 Ball End Mill 25/64 in 4 Flute Carbide

Product Description

The ACCUPRO 12179236 is a single-end ball end mill designed for precision milling in metalworking and machining applications. Built from micrograin solid carbide, it delivers the rigidity and wear resistance needed for demanding cutting operations. The tool measures 25/64 inch (0.3906 inch) in diameter with a 1 inch length of cut and a 2-3/4 inch overall length. A 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. The nACRo coating adds thermal and oxidation resistance, making this end mill well suited for harder materials and higher-speed cutting conditions. It is a right-hand cut, right-hand flute design with a spiral flute configuration and no chipbreaker.

This end mill is used in CNC machining centers, manual mills, and tool-and-die operations where a ball-nose profile is required for contouring, slotting, and profiling work. The 4-flute design supports higher feed rates compared to 2-flute options, making it appropriate for finishing passes and semi-finishing on ferrous and non-ferrous materials. The 7/16 inch shank fits standard collets and end mill holders common in most shop setups. Machinists, tool-and-die makers, and CNC operators in job shops and manufacturing facilities are the primary users of this tool.

Key Features

• Micrograin solid carbide construction for rigidity and extended tool life
• nACRo coating provides thermal resistance and reduced friction for higher-speed cuts
• 40-degree helix angle promotes efficient chip evacuation
• 4-flute spiral geometry supports higher feed rates and improved surface finish
• Right-hand cut and right-hand flute orientation — standard for most CNC and manual mill setups
• Tight mill diameter tolerance of +0.000 / -0.002 inch ensures dimensional accuracy

Compatibility

Designed as an OEM-style replacement and standard tooling option for use in collet chucks and end mill holders accepting a 7/16 inch shank diameter in CNC machining centers and manual vertical mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and locked before inserting or removing the end mill from the holder. Verify collet or holder condition and cleanliness before seating the shank to maintain runout tolerances. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when setting tool offsets and spindle speeds.