Accupro 12184474 Ball End Mill 0.4375 in 3 Flute Carbide

Product Description

The ACCUPRO 12184474 is a solid carbide ball end mill engineered for demanding milling operations where precision and tool life are critical. With a 0.4375-inch (7/16-inch) mill diameter and a 3-inch length of cut, this single-end tool delivers deep-reach capability in an extra-long configuration. The AlTiN coating provides thermal resistance and oxidation protection, making it well-suited for high-speed dry cutting and hard material applications. At 6 inches overall length, it handles deep-cavity and extended-reach work that standard-length end mills cannot reach. Licensed machinists and CNC operators are the primary users of this tool.

This ball end mill is used in vertical and horizontal CNC machining centers for contouring, profiling, and finishing cuts in ferrous metals, hardened steels, stainless alloys, and similar materials. The extra-long overall length of 6 inches suits deep-cavity mold work, die machining, and aerospace component profiling where standard-reach tooling falls short. The right-hand cutting and right-hand spiral flute geometry are compatible with conventional CNC spindle setups.

Key Features

• Solid carbide micrograin substrate for rigidity and wear resistance
• AlTiN coating for high-temperature and hard-material performance
• 3-inch length of cut enables deep-reach machining operations
• 6-inch overall length classified as extra-long reach
• 3-flute, 40-degree helix spiral geometry for efficient chip evacuation
• Single-end, right-hand cutting configuration for standard CNC spindles

Compatibility

Designed as a direct-fit replacement or upgrade for 7/16-inch shank ball end mill toolholders in standard CNC machining center collets and end mill holders accepting 0.4375-inch shank diameter tooling.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the 0.4375-inch shank fully and evenly in the collet or end mill holder and torque the retention hardware per the toolholder manufacturer's specifications. Verify runout with a dial indicator before beginning a cut, particularly given the extra-long reach, which increases deflection sensitivity.