Accupro 12465440 Ball End Mill 0.0210 in 2 Flute Carbide

Product Description

The ACCUPRO 12465440 is a solid carbide ball end mill designed for precision milling of small-radius contours, slots, and complex 3D profiles. With a 0.0210-inch cutting diameter and a 0.0310-inch length of cut, this miniature-series tool is built for tight-tolerance finish work in hardened steels, stainless, aluminum, and similar materials. The micrograin carbide substrate supports sharp edges and resists wear at high surface speeds. A 30-degree helix angle promotes smooth chip evacuation and reduces cutting forces in fine-detail applications. The bright, uncoated finish makes it suitable for applications where coating contamination is a concern or where re-sharpening is planned.

This end mill is used in CNC machining centers, high-speed spindles, and precision manual mills where small-feature work is required. Typical applications include mold and die detail work, medical component machining, electronics enclosures, and aerospace part finishing. The 1/8-inch shank diameter fits standard collets and tool holders common in miniature and micro-machining setups. Its stub-length configuration minimizes deflection, making it well suited for operations demanding dimensional accuracy in shallow pockets and fine surface finishes.

Key Features

• 0.0210-inch ball nose diameter for fine-radius contouring and micro-feature work
• Micrograin solid carbide construction for wear resistance and edge retention
• 30-degree right-hand spiral helix promotes efficient chip flow and reduced cutting forces
• 2-flute single-end design balances chip clearance and core strength at miniature diameters
• Bright, uncoated finish compatible with a wide range of workpiece materials
• Stub length-of-cut geometry minimizes tool deflection in precision operations

Compatibility

Designed as a direct-fit miniature ball end mill for CNC machining centers and precision milling setups using standard 1/8-inch collets or tool holders.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for collet torque and runout verification. Confirm the spindle is fully stopped and locked out before changing tooling. Seat the 1/8-inch shank fully into the collet to the recommended gauge-line depth to minimize runout and deflection. At miniature diameters, even small amounts of runout can accelerate tool wear or cause breakage, so verify concentricity with a dial indicator before production runs.