Accupro 12184934 Ball End Mill 0.3125 in 4 Flute Carbide

Product Description

The ACCUPRO 12184934 is a solid carbide ball end mill designed for precision milling operations in metal, composites, and hard materials. With a 0.3125-inch mill diameter and a 1-inch length of cut, this tool delivers consistent material removal in contouring, profiling, and 3D surface work. The 4-flute geometry combined with a 40-degree helix angle improves chip evacuation and surface finish. Micrograin carbide construction provides edge hardness and wear resistance suited to demanding cutting conditions. The uncoated finish makes it compatible with a wide range of cutting fluids and work materials. A long-length body at 4 inches overall gives added reach for deeper cavities.

This end mill is suited for CNC machining centers and manual mills where tight tolerances and smooth finishes are required. The single-end, right-hand cutting and right-hand spiral flute configuration is standard for conventional and climb milling setups. Long-length geometry makes it a practical choice for mold work, die cavities, and contoured part features that cannot be reached with standard-length tooling. It is a common selection in job shop, tool-and-die, and production machining environments.

Key Features

• Solid micrograin carbide construction for superior edge retention and hardness
• 40-degree helix angle promotes efficient chip evacuation and reduces heat buildup
• 4-flute design balances material removal rate with surface finish quality
• Long-length body at 4 inches OAL provides extended reach into deep cavities
• Right-hand cut and right-hand spiral flute for standard CNC and manual mill setups
• Uncoated finish compatible with a broad range of workpiece materials and cutting fluids

Compatibility

Designed as a standard single-end ball nose end mill with a 5/16-inch shank diameter, compatible with ER and straight-bore collet systems sized for 5/16-inch tooling on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Verify collet size matches the 5/16-inch shank diameter and that the tool is seated to the full recommended insertion depth before tightening. Inspect the cutting edges and shank for damage before each use; carbide tooling is brittle and should not be used if chipped or cracked.