Accupro 12184958 Ball End Mill 5/16 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 12184958 is a solid carbide ball end mill designed for precision milling in metal, composite, and hard material applications. With a 5/16-inch cutting diameter and a 1-1/2-inch length of cut, this four-flute tool generates smooth contoured surfaces and complex 3D profiles. The extra-long 6-inch overall length provides extended reach into deep cavities and pockets where standard-length tooling cannot access. The 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces. A bright, uncoated finish makes this mill well suited to non-ferrous metals, cast iron, and applications where coating adhesion may not be preferred.

This end mill is used in CNC machining centers and manual milling machines for finishing passes, contour milling, and die-and-mold work requiring a ball-nose geometry. The extra-long reach configuration is particularly useful in aerospace, automotive, and tooling applications where deep-cavity access is required. Right-hand cut and right-hand flute direction are standard for conventional CNC spindle configurations. The micrograin carbide substrate supports higher cutting speeds and longer tool life compared to standard carbide grades in hardened and abrasive materials.

Key Features

• Ball nose geometry for 3D contouring, profiling, and finishing passes
• Four-flute, spiral flute design for improved surface finish and feed rates
• 40-degree helix angle promotes efficient chip evacuation
• Extra-long 6-inch OAL provides deep-cavity reach
• Micrograin solid carbide substrate for wear resistance in demanding materials
• Bright/uncoated finish suitable for non-ferrous and general-purpose milling

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide ball end mill for CNC machining centers and manual mills accepting a 5/16-inch round shank with right-hand cutting direction.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Ensure the spindle is fully powered down and locked out before changing tooling. Verify the collet or tool holder bore matches the 5/16-inch shank diameter and torque the retention nut to the tool holder manufacturer specification. Inspect runout after installation; excessive runout will accelerate wear and degrade surface finish.