Accupro 12183046 Corner Radius End Mill 5/16 in 4 Flute

Product Description

The ACCUPRO 12183046 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous metals. It features a 5/16-inch diameter, a 1-1/8-inch length of cut, and a 0.06-inch corner radius that reduces stress concentration at the tool tip, extending tool life in aggressive cutting conditions. The AlTiN coating provides high-temperature oxidation resistance, making it well suited for dry or high-speed machining where heat buildup is a concern. With 4 flutes and a right-hand spiral geometry, it delivers efficient chip evacuation and a smooth surface finish. Machinists and tool-and-die professionals specify this end mill for finishing and semi-finishing passes where edge integrity matters.

This end mill is used in CNC machining centers and manual mills for slotting, profiling, and peripheral milling of steel, stainless steel, cast iron, and similar materials. The long-length configuration, with a 3-inch overall length and 1-1/8-inch length of cut, suits deeper cavity work and mold-and-die applications where reach beyond standard-length tools is required. The centercutting design allows direct plunge entry without pre-drilling. Single-end construction is standard for this tool class.

Key Features

• 0.06-inch corner radius reduces chipping and extends tool life versus sharp-corner end mills
• AlTiN coating supports high-speed and dry machining by resisting thermal breakdown
• Micrograin solid carbide substrate provides rigidity and wear resistance
• 4-flute, right-hand spiral geometry promotes efficient chip evacuation and surface finish quality
• Centercutting capability allows plunge milling without a pilot hole
• Long-length design at 3 inches OAL accommodates deeper cavity and mold work

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for CNC machining centers and manual mills accepting a 5/16-inch straight shank.

Installation Notes

Installation is performed by qualified machinists or tool-room personnel. Ensure the machine spindle and collet or end mill holder are clean and free of runout before seating the shank. Confirm shank engagement meets the tool holder manufacturer minimum grip length before clamping. Follow your machine tool manufacturer guidelines and applicable shop safety procedures when setting feeds, speeds, and depth of cut for the workpiece material.