Accupro 12181271 Corner Radius End Mill 1/8 in 2 Flute

Product Description

The ACCUPRO 12181271 is a single-end corner radius end mill ground from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride) for extended tool life in hard and abrasive materials. The cutter measures 1/8 inch in diameter with a 0.045-inch corner radius, a 1/2-inch length of cut, and a 1-1/2-inch overall length. The 2-flute, right-hand spiral geometry with centercutting capability allows plunge entry and efficient chip evacuation. This tool is used by machinists and tool-and-die professionals in CNC milling applications where a blended corner radius is required to reduce stress concentrations and improve surface finish.

This end mill is suited for light finishing passes and semi-finish contouring in ferrous metals, hardened steels, stainless, and high-temp alloys. The 40-degree helix angle promotes smooth cutting action and helps manage heat at the cutting edge. The 1/8-inch shank diameter makes it compatible with standard collet systems used on vertical machining centers and high-speed spindles. It ships as a single unit and is appropriate for prototype shops, mold and die work, and precision part production requiring tight corner geometry.

Key Features

• AlTiN coating provides heat resistance and extended tool life in ferrous and hardened materials
• Micrograin solid carbide substrate for rigidity and wear resistance at small diameters
• 0.045-inch corner radius reduces edge chipping and improves workpiece surface finish
• Centercutting design allows direct plunge milling without a pre-drilled hole
• 40-degree helix angle supports smooth chip flow and reduced cutting forces
• Right-hand flute direction and right-hand cutting for standard CNC spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-application corner radius end mill for use in standard 1/8-inch collet holders and compatible tooling systems on CNC vertical machining centers.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is in a safe state before inserting or removing tooling. Verify collet bore size matches the 1/8-inch shank diameter and torque the collet nut per the toolholder manufacturer specifications. Inspect the cutting edge for chips or coating damage before each use.