Accupro 12464057 Ball End Mill 0.026 in 4 Flute Altin Carbide

Product Description

The ACCUPRO 12464057 is a solid carbide ball end mill designed for high-precision milling in tight tolerances and fine-detail applications. With a 0.0260-inch mill diameter and a 0.0780-inch length of cut, this miniature single-end tool is built for small-feature work where dimensional accuracy is critical. The 4-flute geometry paired with a 30-degree helix angle promotes chip evacuation and stable cutting action. An AlTiN coating provides thermal resistance and extended tool life in ferrous and hardened materials. The micrograin carbide substrate adds rigidity and edge retention at small diameters where deflection is a primary concern.

This ball end mill is suited for CNC machining operations requiring fine detail, contour milling, and 3D profiling in mold, die, and precision component work. The miniature series designation makes it appropriate for applications where standard end mills are too large. The 1/8-inch shank diameter fits standard collet toolholding systems common in vertical machining centers and CNC routers used in precision shop environments. Right-hand cutting and right-hand flute direction are standard for conventional spindle setups. This tool is typically installed and run by machinists and CNC programmers working in aerospace, medical, or tooling applications.

Key Features

• 0.0260-inch ball diameter with mill diameter tolerance of +0.0000 / -0.0010 inches for tight dimensional control
• AlTiN coating provides heat resistance and wear protection in hard and abrasive materials
• 4-flute spiral geometry with 30-degree helix angle for stable chip flow and improved surface finish
• Micrograin solid carbide substrate delivers edge retention at miniature diameters
• Single-end design with 1/8-inch shank and shank diameter tolerance of -0.0001 / -0.0003 inches
• 1-1/2-inch overall length supports reach into shallow pockets without excessive overhang

Compatibility

Designed for use in CNC machining centers and high-speed spindles equipped with 1/8-inch collet toolholding systems. Part of the ACCUPRO Miniature series for small-feature and fine-detail milling operations.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Seat the shank fully in the collet and torque the collet nut to the toolholder manufacturer specification. Verify runout at the tool tip before beginning a cut, as runout at miniature diameters has an outsized effect on tool life and part accuracy.