Accupro 12180821 Square End Mill 1/4 in 7 Flute Carbide

Product Description

The ACCUPRO 12180821 is a solid carbide square end mill engineered for high-performance milling in demanding machining environments. With a 1/4 inch diameter, 3/4 inch length of cut, and 7 flutes, this tool delivers fine surface finishes and efficient chip evacuation in a single-end configuration. The 37.5-degree helix angle and variable index geometry help reduce chatter and vibration during cut. An nACRo coating adds heat and wear resistance, extending tool life in ferrous and hardened materials. Machinists and CNC operators working in job shops, tool rooms, and production environments will find this end mill suited to tight-tolerance work.

This end mill is suited for milling operations on ferrous metals, hardened steels, and similar materials where a high-flute-count carbide tool provides an advantage. The 1/4 inch shank diameter fits standard collets and end mill holders in CNC machining centers and manual knee mills. The 2.5 inch overall length provides adequate reach for most standard cavity and profile milling applications without excessive overhang.

Key Features

• 7-flute design for improved surface finish and higher feed rates in finishing passes
• nACRo coating for elevated heat resistance and extended tool life in hard materials
• 37.5-degree helix angle reduces cutting forces and minimizes chatter
• Variable index geometry disrupts harmonic vibration during cut
• Centercutting capability allows plunge entry into workpiece
• Micrograin solid carbide construction for rigidity and wear resistance

Compatibility

Designed as a direct-fit replacement for 1/4 inch shank square end mills in standard ER collet chucks, end mill holders, and compatible tool holding systems used in CNC and manual milling applications.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully powered down and at rest before changing tooling. Seat the shank to the recommended engagement depth in the collet or holder and torque the retention nut according to the tool holder manufacturer specifications. Verify runout with a dial indicator before beginning production cuts.