Accupro 12182844 Corner Radius End Mill 5/16 in 4 Flute

Product Description

The ACCUPRO 12182844 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 5/16 inch (0.3125 inch) mill diameter with a 0.045 inch corner radius, reducing stress concentrations at the cutting edge and extending tool life in demanding applications. The four-flute, right-hand spiral design with a 40-degree helix angle promotes efficient chip evacuation and smooth surface finishes. A TiCN coating improves hardness and wear resistance compared to uncoated carbide. The micrograin carbide substrate adds toughness for interrupted cuts and harder workpiece materials. This tool is installed by machinists and CNC operators in job shops, tool rooms, and production environments.

This end mill suits stub-length milling applications requiring a corner radius profile, such as pocket milling, contouring, and finishing passes where sharp corner stress risers must be avoided. With a 1/2 inch length of cut and 2 inch overall length, it is optimized for rigidity in tight setups. The centercutting geometry allows plunge entry where required. It is used in both manual and CNC milling machines for ferrous and non-ferrous workpiece materials where TiCN coating performance is appropriate.

Key Features

• 0.045 inch corner radius reduces edge chipping and workpiece stress concentrations
• TiCN coating provides enhanced wear resistance and surface hardness over uncoated carbide
• Micrograin solid carbide substrate for improved toughness in harder materials
• 40-degree helix angle promotes smooth chip flow and reduced cutting forces
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Single-end, right-hand cutting with stub-length geometry for maximum rigidity

Compatibility

Designed as an OEM-style replacement or standard tooling selection for CNC and manual milling machines accepting a 5/16 inch shank diameter end mill holder or collet.

Installation Notes

Installation is performed by machinists using an appropriate collet chuck or end mill holder sized for a 5/16 inch shank. Ensure the machine spindle is fully de-energized and locked out before tool changes. Verify shank engagement depth meets the tool holder manufacturer minimum before tightening. Inspect the collet and holder for wear or contamination that could compromise runout and reduce tool life.