Accupro 12179306 Ball End Mill 0.3125 in 4 Flute Carbide

Product Description

The ACCUPRO 12179306 is a solid carbide ball end mill designed for precision milling operations in metal cutting and machining applications. Measuring 0.3125 inches in diameter with a 1.5-inch length of cut and a 6-inch overall length, this tool is built for rigidity and accuracy in demanding shop environments. The 4-flute, right-hand spiral configuration promotes efficient chip evacuation and a smooth surface finish. An nACRo coating provides enhanced wear resistance and thermal protection, extending tool life in high-speed and dry cutting conditions. The 40-degree helix angle improves cutting action and reduces chatter. This end mill is intended for use by machinists and CNC operators working in job shop, production, and toolroom settings.

This ball end mill suits applications in ferrous and hard alloy milling where contour profiling, slotting, and 3D surfacing are required. The single-end geometry and 0.3125-inch shank diameter allow direct chuck or collet mounting in standard CNC machining centers and manual knee mills. The micrograin carbide substrate supports high feed rates and consistent performance in materials such as alloy steels, tool steels, and hardened materials. It is well suited for finishing passes and semi-finish contour work where dimensional accuracy and surface quality are priorities.

Key Features

• Solid micrograin carbide construction for high rigidity and edge retention
• nACRo coating for improved wear resistance and reduced heat buildup at the cutting edge
• 4-flute, right-hand spiral design promotes efficient chip removal and smooth surface finish
• 40-degree helix angle reduces cutting forces and minimizes chatter
• Single-end ball nose geometry for contour profiling and 3D surfacing operations
• Mill diameter tolerance of +0.000 to -0.002 inches ensures consistent fitment and accuracy

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills accepting a 0.3125-inch shank diameter via collet, end mill holder, or equivalent toolholding system.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Seat the shank fully into the collet or holder to the recommended engagement depth and torque the retention mechanism per the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before each use and verify runout with a dial indicator when tight tolerances are required.