Accupro 12182731 Corner Radius End Mill 1/8 in 4 Flute

Product Description

The ACCUPRO 12182731 is a solid carbide corner radius end mill designed for precision milling in metalworking and machining applications. It features a 1/8 inch cutting diameter and a 0.01 inch corner radius that reduces stress concentrations at the cutting edge, improving tool life in demanding cuts. With 4 right-hand spiral flutes and an AlTiN (aluminum titanium nitride) coating, it handles high-temperature cutting conditions in hardened steels, stainless, and aerospace alloys. The stub-length geometry keeps deflection low for tight-tolerance work. This tool is installed and operated by machinists and CNC programmers on milling machines and machining centers.

This end mill suits precision slot milling, profiling, and contouring where a small corner radius is required to blend floor-to-wall transitions without sharp stress risers. The 1/4 inch length of cut and 1-1/2 inch overall length make it well-suited for shallow pockets and fine-detail work in production and job-shop environments. The centercutting design allows direct plunge entry. Right-hand cutting direction is compatible with standard spindle rotation on conventional and CNC milling machines.

Key Features

• 0.01 inch corner radius reduces edge chipping and stress concentration at the tool-workpiece interface
• AlTiN coating provides high heat resistance for dry and high-speed cutting in ferrous and hard materials
• 4-flute solid micrograin carbide construction for rigidity and fine surface finish
• Centercutting capable — allows direct plunge milling without a pre-drilled entry hole
• Right-hand flute direction and cutting rotation for standard spindle compatibility
• Stub-length design minimizes tool deflection in shallow-depth precision work

Compatibility

Designed as an OEM-style tooling solution for use in 1/8 inch collets or tool holders on standard CNC machining centers and manual milling machines requiring a corner radius end mill profile.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with CNC or manual milling equipment. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the tool from the holder. Use a properly sized collet or end mill holder to match the 1/8 inch shank diameter, and torque the retention mechanism per the tool holder manufacturer specifications. Verify spindle speed and feed rate settings are appropriate for the workpiece material before engaging the cut.