Accupro 12184787 Ball End Mill 0.2813 in 4 Flute Carbide

Product Description

The ACCUPRO 12184787 is a solid carbide ball end mill designed for precision milling operations in metal cutting and machining applications. With a 0.2813-inch (9/32-inch) mill diameter and a 0.5-inch length of cut, this tool is built for tight-tolerance work in ferrous and non-ferrous materials. The micrograin carbide construction provides the hardness and edge retention needed for demanding cutting cycles. Four flutes with a 40-degree helix angle promote efficient chip evacuation and a smooth surface finish. The uncoated finish makes this mill well-suited for applications where coating compatibility or regrinding is a consideration. Licensed machinists and toolroom professionals install and operate this tool type.

This ball end mill fits stub-length applications where a shorter overall length adds rigidity and reduces deflection. The 2.0-inch overall length and 5/16-inch shank diameter suit standard collet chucks and milling machine spindles commonly found in CNC machining centers and manual knee mills. Right-hand cutting and right-hand flute direction are standard for conventional and climb milling setups. The single-end configuration means the tool is run from one working end, maximizing usable cutting surface before replacement or regrinding.

Key Features

• Micrograin solid carbide construction for hardness and edge retention
• 4-flute spiral design with 40-degree helix angle for efficient chip evacuation
• 0.2813-inch (9/32-inch) mill diameter with tight tolerance of +0.000 to -0.002 inches
• 5/16-inch shank diameter with tolerance of -0.0001 to -0.0004 inches for secure collet fit
• Uncoated finish suited for regrinding or coating-sensitive applications
• Stub-length classification adds rigidity and reduces tool deflection

Compatibility

Designed as a standard stub-length ball end mill compatible with collet chucks and tool holders accepting a 5/16-inch shank diameter on CNC machining centers and manual milling machines.

Installation Notes

Installation and operation should be performed by a qualified machinist or toolroom professional. Ensure the spindle is fully stopped and the machine is powered down before changing or setting tools. Use a calibrated collet or tool holder that matches the 5/16-inch shank diameter to maintain runout tolerances. Verify tool projection and stick-out are minimized to reduce deflection, and confirm spindle speed and feed rate are appropriate for the workpiece material before engaging the cut.