Accupro 14881866 Ball End Mill 1/4 in 3 Flute Carbide

Product Description

The ACCUPRO 14881866 is a solid carbide ball end mill designed for precision milling in metalworking and machining applications. Built in the Miniature series, it features a 1/4 inch mill diameter, a 3/8 inch length of cut, and a 4 inch overall length. The three-flute, right-hand spiral geometry with a 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. Micrograin carbide construction delivers the hardness and edge retention needed for tight-tolerance work. The bright/uncoated finish makes it suitable for a range of materials where coating-induced dimensional changes are a concern. A chipbreaker is included to help manage chip loads in deeper cuts.

This end mill is suited for finish and semi-finish milling operations requiring extended reach. The 1-1/4 inch neck length allows the tool to reach into pockets and contoured surfaces that standard-length end mills cannot access. The 1/4 inch shank fits standard collet systems commonly found on CNC machining centers and manual milling machines. It is a single-end tool intended for use by machinists and tool-and-die professionals working on small-scale components, mold work, and detailed profiling operations where ball-nose geometry is required.

Key Features

• Solid micrograin carbide construction for hardness and edge retention
• 3/8 inch length of cut with 1-1/4 inch neck for extended reach capability
• 3-flute right-hand spiral design at 30-degree helix for efficient chip removal
• Ball nose geometry for profiling, contouring, and 3D surface work
• Chipbreaker feature to reduce chip loads in deeper milling passes
• Bright/uncoated finish for broad material compatibility

Compatibility

Designed as a direct-fit miniature ball end mill for 1/4 inch collet systems on CNC machining centers and manual mills requiring extended-reach tooling.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's collet and toolholder torque guidelines. Ensure the machine spindle is fully stopped and locked out before tool changes. Confirm shank seating depth meets the toolholder's minimum grip length to avoid pullout under load. Verify spindle RPM and feed rate settings are appropriate for the workpiece material before engaging the cut.