Accupro 12183220 Corner Radius End Mill 3/16in 4 Flute Altin

Product Description

The ACCUPRO 12183220 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. It features a 3/16-inch diameter, a 1-1/8-inch length of cut, and a 0.015-inch corner radius that reduces stress concentration at the cutting edge and extends tool life. The 40-degree helix angle promotes efficient chip evacuation, and the AlTiN coating provides heat resistance and hardness at elevated cutting temperatures. With 4 flutes and a right-hand cutting direction, this tool is suited for finishing and semi-finishing passes in ferrous and hard materials. It is installed and run by machinists and CNC programmers in job shop and production environments.

This end mill is classified as an extra-long length type with a 3-inch overall length and a 3/16-inch shank diameter, making it well suited for reaching into deeper pockets and slots where standard-length tools cannot reach. The centercutting geometry allows plunge entry as well as conventional peripheral milling. It is appropriate for use in CNC machining centers, vertical mills, and similar equipment when working with hardened steels, stainless, and other abrasion-prone workpiece materials where an AlTiN coating provides a performance advantage.

Key Features

• AlTiN coating for high-temperature wear resistance in hard and ferrous materials
• 0.015-inch corner radius reduces edge chipping and improves surface finish at part corners
• 40-degree helix angle promotes smooth chip flow and reduces cutting forces
• 4-flute, right-hand spiral design for finishing and semi-finishing operations
• Centercutting geometry allows direct plunge entry into the workpiece
• Micrograin solid carbide construction for rigidity and dimensional stability

Compatibility

Designed as an OEM-style solid carbide corner radius end mill for use in standard 3/16-inch collets or end mill holders on CNC machining centers and manual vertical mills.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout tolerance. Ensure the spindle and tool holder are clean and free of chips before seating the shank. Verify collet or holder clamping torque per the holder manufacturer specification before initiating a cut. Do not exceed the recommended speeds and feeds for the workpiece material and coating type.