Accupro 12181983 Corner Radius End Mill 5/16 in 3 Flute

Product Description

The ACCUPRO 12181983 is a solid carbide corner radius end mill designed for precision milling operations in metal fabrication and machining environments. Built with 3 flutes and a 0.02 inch corner radius, it produces smooth, consistent edge breaks and contoured profiles while reducing stress concentrations at corners. The micrograin carbide substrate supports tight tolerances and wear resistance during high-speed cutting. With a 5/16 inch diameter and 3/4 inch length of cut, this single-end, centercutting tool handles both plunge and peripheral milling. It is used by machinists and tool-and-die professionals working on CNC mills and manual machining centers.

This end mill is suited for general-purpose milling of ferrous and non-ferrous materials where a controlled corner radius is required. The bright uncoated finish makes it a practical choice for aluminum, brass, and similar non-ferrous applications where coating adhesion or heat buildup is a concern. Its right-hand flute direction and right-hand cutting orientation are standard for conventional CNC milling setups. The 5/16 inch shank diameter fits standard ER and shrink-fit collet systems commonly found in production and job-shop environments.

Key Features

• 0.02 inch corner radius reduces stress risers and produces consistent edge profiles
• Micrograin solid carbide construction for wear resistance and dimensional stability
• 3-flute geometry balances chip evacuation and surface finish
• Centercutting design allows direct plunge entry without pre-drilling
• Bright uncoated finish suited for non-ferrous and general-purpose milling
• Right-hand cut and right-hand spiral for standard CNC mill compatibility

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 5/16 inch shank diameter collet or tool holder.

Installation Notes

Installation is performed by qualified machinists following standard tool-change procedures for the machine in use. Power down and lock out the spindle before inserting or removing tooling. Ensure the shank is clean and fully seated in the collet to the recommended gauge length before torquing the collet nut. Verify runout with a dial indicator before initiating a cut to protect both the tool and the workpiece.