Accupro 12182386 Corner Radius End Mill 1/8 in 4 Flute

Product Description

The ACCUPRO 12182386 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hard materials. With a 1/8 inch cutting diameter and a 0.03 inch corner radius, it produces smooth transitions and reduces stress concentrations at corners during profiling and slotting cuts. The 4-flute, right-hand spiral design with a 40-degree helix angle promotes efficient chip evacuation and surface finish quality. A TiCN coating adds surface hardness and wear resistance, extending tool life in demanding cutting conditions. This tool is single-end and centercutting, meaning it can plunge directly into a workpiece. It is sized for use in CNC machining centers, manual mills, and high-speed spindles.

This end mill is suited for finish profiling, contouring, and corner-blending operations in tool and die work, mold making, aerospace component machining, and general precision metalworking. The 1/8 inch shank and compact 1/2 inch length of cut make it a practical choice for tight-pocket work and detail features where a smaller tool footprint is required. Machinists and CNC operators working with hardened steels, stainless, and similar alloys will find the TiCN coating and micrograin carbide substrate appropriate for these applications.

Key Features

• 0.03 inch corner radius reduces stress risers and improves surface finish at part corners
• TiCN coating provides elevated hardness and wear resistance for ferrous and hard material cutting
• 40-degree helix angle promotes smooth chip flow and reduces cutting forces
• Micrograin solid carbide substrate supports rigidity and edge retention in demanding cuts
• Centercutting geometry allows direct plunge entry without a pre-drilled pilot hole
• Right-hand cut, right-hand flute spiral — compatible with standard CNC and manual mill spindle rotation

Compatibility

Designed as a standard-shank corner radius end mill with a 1/8 inch shank diameter, compatible with 1/8 inch collets and end mill holders on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and locked out before loading or removing the tool from the holder. Seat the shank to the recommended engagement depth in the collet or tool holder and torque the retention hardware per the holder manufacturer specifications. Verify runout with a dial indicator before production use, as runout directly affects corner radius accuracy and tool life.