Accupro 12277137 Ball End Mill 0.012 in 4 Flute Carbide

Product Description

The ACCUPRO 12277137 is a miniature solid carbide ball end mill designed for precision milling operations where tight tolerances and small-diameter cutting are required. With a 0.0120-inch cutting diameter and a 0.0180-inch length of cut (LOC), this tool is built for fine detail work in hardened and difficult-to-machine materials. The micrograin carbide construction provides the rigidity and edge retention needed to hold dimensional accuracy at this scale. A 30-degree helix angle promotes efficient chip evacuation during high-speed passes. Machinists and tooling professionals working on small components, molds, or intricate features will find this single-end configuration well suited to their setups.

This ball end mill is intended for use in CNC machining centers and precision manual mills where sub-0.025-inch diameter tooling is required. Typical applications include micro-mold work, engraving, fine contouring, and detail finishing passes on aerospace, medical, and electronics components. The 1/8-inch shank diameter allows it to seat in standard collet chucks commonly found in high-speed spindles. Its bright, uncoated finish makes it suitable for a range of base materials where coating interaction is a concern.

Key Features

• 0.0120-inch ball nose diameter for micro-scale milling and fine detail work
• Micrograin solid carbide construction for edge retention and wear resistance
• 4-flute spiral geometry with 30-degree right-hand helix for efficient chip flow
• 0.0180-inch length of cut (LOC) keeps deflection minimal at this diameter
• 1.5-inch overall length with 1/8-inch shank for compatibility with standard collet systems
• Bright, uncoated finish suitable where coating is not required or desired

Compatibility

Designed as an OEM-style miniature ball end mill for use in CNC machining centers and precision milling spindles accepting a 1/8-inch shank collet.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Seat the 1/8-inch shank fully into a clean, properly sized collet before torquing to the spindle manufacturer's specification. At this diameter, runout is critical — verify runout with a test indicator before cutting. Always confirm spindle speed and feed rate are appropriate for the workpiece material and tool diameter before engaging the cut.