Accupro 12177177 Ball End Mill 0.4375 in 4 Flute Carbide

Product Description

The ACCUPRO 12177177 is a solid carbide ball end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 0.4375 inch (7/16 inch) mill diameter with a 1 inch length of cut and a 4-flute spiral configuration. The 40-degree helix angle promotes smooth chip evacuation and reduces cutting forces during profiling, contouring, and slotting passes. Built from micrograin solid carbide and left uncoated, this end mill is suited for applications where dimensional control and surface finish are critical. Machinists and tooling professionals in job shops, production facilities, and CNC machining centers are the primary users.

This ball end mill is configured as a single-end, long-reach tool with an extended reach length of 4.5 inches, making it well suited for deep cavity milling, mold work, and contouring where additional clearance between the holder and workpiece is required. The right-hand cutting and right-hand flute direction are standard for conventional CNC machining center setups. The 7/16 inch shank diameter matches the mill diameter, allowing use in standard collet chucks and end mill holders without a reducing sleeve.

Key Features

• 0.4375 inch ball nose diameter for accurate 3D contouring and radius profiling
• 4 right-hand spiral flutes with a 40-degree helix angle for efficient chip flow
• Micrograin solid carbide substrate for wear resistance and edge retention
• Long-reach configuration with 4.5 inch reach length for deep cavity access
• Uncoated finish suitable for applications where coating is not required or preferred
• Single-end design with 6 inch overall length and 1 inch length of cut

Compatibility

Designed for use in standard CNC machining centers and manual mills equipped with collet chucks or end mill holders accepting a 7/16 inch shank diameter.

Installation Notes

Installation and tool changes should be performed by qualified machinists with the spindle fully stopped and the machine in a safe, locked-out state. Ensure the collet or holder is clean and free of chips before seating the shank to the recommended insertion depth. Verify runout after clamping to avoid premature edge wear or tool breakage. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when setting feeds, speeds, and depth of cut.