Accupro 12182949 Corner Radius End Mill 1/2in 4 Flute Altin

Product Description

The ACCUPRO 12182949 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hard metals. It features a 1/2 inch mill diameter, a 5/8 inch length of cut, and a 0.015 inch corner radius that reduces stress concentration at part edges and extends tool life in interrupted cuts. The 40-degree helix angle promotes smooth chip evacuation and reduces cutting forces. An AlTiN coating provides high-temperature oxidation resistance, making this tool well-suited for dry or semi-dry machining environments. It is a single-end, centercutting tool with right-hand flute direction and cutting direction, appropriate for CNC machining centers and manual mills operated by machinists and toolroom professionals.

This end mill is used in die and mold work, aerospace component machining, and general precision metalworking where a radiused corner is required to blend walls and floors or to match part radii. The stub length type and 2-1/2 inch overall length provide rigidity in tight setups. The 1/2 inch shank diameter fits standard ER and end mill holders. Micrograin carbide construction supports high-speed material removal in hardened steels, stainless, and cast iron. Sold as a single unit.

Key Features

• 0.015 inch corner radius reduces edge chipping and stress risers at part corners
• AlTiN coating rated for high-temperature dry and semi-dry cutting of ferrous materials
• 40-degree helix angle for efficient chip evacuation and reduced cutting force
• Micrograin solid carbide substrate for rigidity and edge retention
• Centercutting design allows direct plunge entry into workpiece
• Right-hand cut, right-hand spiral with 4 flutes for balanced chip load per tooth

Compatibility

Designed as an OEM-style solid carbide corner radius end mill for use in standard 1/2 inch end mill holders, ER collet chucks, and milling arbors on CNC and manual milling machines.

Installation Notes

Installation is performed by qualified machinists following standard toolroom procedures. Ensure the machine spindle is fully stopped and the tool holder is clean and free of chips before seating the shank. Torque the set screw or collet nut to the holder manufacturer specification. Verify runout with a dial indicator before beginning the cut, as excessive runout accelerates wear on corner radius end mills.