Accupro 12182471 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The ACCUPRO 12182471 is a solid carbide corner radius end mill designed for precision milling in ferrous and hardened materials. It features a 1/4 inch diameter cutting edge with a 0.03 inch corner radius and a 40-degree helix angle, delivering smooth chip evacuation and reduced cutting forces. The AlTiN coating provides high-heat resistance, making it well suited for dry or minimal-lubrication machining environments. With 4 flutes and a right-hand spiral flute direction, this end mill is built for finishing and semi-finishing passes where surface quality and edge integrity matter. Machinists, toolroom operators, and CNC programmers working in production shops or job shops rely on tools like this for tight-tolerance profiling and contouring work.

This end mill is suited for use on CNC machining centers and manual knee mills where a 1/4 inch shank is compatible with the collet or tool holder in use. The 3/4 inch length of cut and 2-1/2 inch overall length make it appropriate for moderate-depth profiling, slot milling, and contour work in steel, stainless steel, cast iron, and similar materials. The centercutting design allows plunge milling entry. It is sold as a single-end tool in individual quantity packaging.

Key Features

• AlTiN coating for elevated heat resistance during high-speed or dry machining
• Micrograin solid carbide construction for rigidity and wear resistance
• 0.03 inch corner radius reduces stress concentration and extends tool life at corners
• 40-degree helix angle promotes smooth chip flow and reduced cutting pressure
• Centercutting design permits direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute spiral for standard CNC and manual mill setups

Compatibility

Designed as a standard 1/4 inch shank corner radius end mill compatible with 1/4 inch collets and end mill holders used on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from the collet or tool holder. Verify collet size matches the 1/4 inch shank diameter and that the tool is seated to the correct gage length before tightening. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.