Accupro 12178871 Square End Mill 1/8 in 3 Flute Carbide

Product Description

The ACCUPRO 12178871 is a solid carbide square end mill designed for precision milling in metal, composites, and other hard materials. It features a 1/8 inch cutting diameter, a 1/2 inch length of cut, and a 1/8 inch shank diameter, with an overall length of 1.5 inches. The three-flute spiral geometry runs at a 40-degree helix angle, and the nACRo finish provides improved wear resistance and heat reduction during aggressive cuts. Right-hand cut and right-hand flute orientation follow standard convention. The centercutting design allows plunge entry. Machinists and CNC operators running tight-tolerance work will find the micrograin carbide grade well-suited to finish and semi-finish passes.

This end mill is intended for use in CNC machining centers, manual mills, and high-speed spindle applications where small-diameter tooling is required. The regular-length geometry makes it appropriate for slotting, profiling, and pocketing operations in ferrous and non-ferrous workpieces. The 1/8 inch shank fits standard collet chucks and tool holders sized for that diameter. It is best suited for applications where tool deflection must be minimized and where a fine surface finish is required at depth.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in hard materials
• nACRo coating improves lubricity and extends tool life in dry and minimal-coolant cutting
• 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces
• Centercutting geometry enables direct plunge entry without a pre-drilled hole
• Three-flute design balances chip clearance with surface finish quality
• Mill diameter tolerance of plus 0.000 and minus 0.002 inches for consistent dimensional accuracy

Compatibility

Designed as an OEM-style replacement or direct-use cutting tool for CNC machining centers and manual milling machines equipped with 1/8 inch collet chucks or tool holders.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the shank in a clean, properly sized collet or end mill holder and torque the retention mechanism per the machine manufacturer's specification. Inspect the tool for chips or coating damage before mounting. Verify spindle runout is within acceptable limits before beginning a cut, as excessive runout accelerates wear on small-diameter carbide tools.