Accupro 12180604 Corner Radius End Mill 1/2in 4 Flute

Product Description

The ACCUPRO 12180604 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 1/2-inch diameter cutting profile with a 0.03-inch corner radius, reducing stress concentrations at the cutting edge and extending tool life in demanding materials. With 4 flutes and a right-hand spiral flute design, it delivers efficient chip evacuation and smooth surface finishes. The AlTiN coating provides thermal resistance and hardness retention at elevated cutting temperatures, making it well suited for ferrous metals, stainless steels, and hardened alloys. This tool is installed and operated by machinists and CNC programmers in production and job shop settings.

This end mill is used in vertical and horizontal machining centers as well as manual knee mills where corner radius geometry is required to add fillet radii to part features or strengthen mold cavities and die work. The centercutting capability allows plunge entry, expanding its usefulness in slot milling and pocket roughing applications. It is appropriate for both roughing and finishing passes depending on feed and speed parameters selected for the workpiece material.

Key Features

• 0.03-inch corner radius reduces edge chipping and improves part geometry at inside corners
• AlTiN coating provides elevated heat resistance for dry and high-speed machining
• 4-flute, right-hand spiral design promotes efficient chip removal and surface finish quality
• Centercutting geometry allows direct plunge entry without pre-drilling
• Variable index flute spacing reduces harmonic vibration during cuts
• Micrograin solid carbide substrate supports rigidity and wear resistance in hard materials

Compatibility

Designed as an OEM-style replacement and standard fitment corner radius end mill for 1/2-inch collet systems and end mill holders used in CNC machining centers and manual milling machines.

Installation Notes

Installation is performed by a machinist or CNC setup technician. The machine spindle must be fully stopped and the tool holder de-energized before inserting or removing the end mill. Verify collet or holder bore diameter matches the 1/2-inch shank before clamping. Confirm runout with a dial indicator after seating to avoid premature edge wear or part deviation.