Accupro 12180346 Corner Rounding End Mill 5/16in Solid Carbide

Product Description

The ACCUPRO 12180346 is a double-end corner rounding end mill designed for milling radius profiles on metal workpieces. Built from solid carbide and coated with TiCN (Titanium Carbonitride), it delivers hardness and wear resistance suited for ferrous and non-ferrous machining applications. The tool features a 0.109-inch corner radius, a 5/16-inch mill diameter, and a tip diameter of 0.094 inches. With two right-hand flutes and a right-hand cutting direction, it produces smooth, consistent edge breaks and radius forms. The double-end configuration extends usable tool life between regrinds. Machinists and tool-and-die professionals in job shops, production floors, and maintenance environments are the typical installers.

This corner rounding end mill is suited for creating radius edges on steel, stainless steel, aluminum, and similar machinable metals. The 5/16-inch shank diameter fits standard end mill holders and collet chucks at that bore size. The TiCN coating improves surface hardness and reduces friction at the cutting edge, making it a practical choice for dry or light-coolant passes on hardened materials. It is well-matched for CNC machining centers and manual vertical mills where consistent radius geometry is required on part edges or shoulders.

Key Features

• Solid carbide construction for rigidity and heat resistance in demanding cuts
• TiCN coating improves wear resistance and reduces built-up edge on coated metals
• Double-end design provides two usable cutting ends to extend tool life
• 0.109-inch corner radius with a 0.094-inch tip diameter for precise profile control
• Right-hand cut and right-hand flute direction compatible with standard spindle rotation
• 5/16-inch shank and mill diameter fits common collet and end mill holder systems

Compatibility

Designed for use in standard end mill holders and collet chucks accepting a 5/16-inch shank diameter on CNC machining centers and manual vertical mills.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the tool from its holder. Verify collet or holder bore matches the 5/16-inch shank diameter and that runout is within acceptable limits before beginning a cut. Follow the tooling manufacturer and machine builder guidelines for feeds, speeds, and depth of cut appropriate to the workpiece material.