Accupro 310243 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 310243 is a solid carbide corner radius end mill designed for precision milling operations in metal fabrication and machining environments. It features a 3/8 inch diameter, a 1-1/4 inch length of cut, and a 3 inch overall length. The tool carries an AlCrTiN coating that improves heat resistance and extends tool life in high-temperature cutting conditions. With four right-hand spiral flutes, a 38-degree helix angle, and a variable index design, it delivers smooth chip evacuation and reduced chatter. This is a centercutting tool, allowing plunge entry. It is used by machinists and CNC operators working on precision component production.

The 310243 is suited for milling operations on ferrous and hardened materials where corner radius geometry is required to produce a blended floor-to-wall transition without a sharp 90-degree corner. The straight cylindrical shank at 3/8 inch diameter accepts standard ER or end mill holders. Single-end configuration means the cutting end is not reversible. This tool is appropriate for production machining in job shops, tool rooms, and CNC machining centers running at parameters suited to solid carbide tooling with advanced coatings.

Key Features

• AlCrTiN coating provides elevated heat and oxidation resistance for dry or high-speed cutting
• Solid micrograin carbide substrate supports tight tolerances and wear resistance
• Variable index flute spacing reduces harmonic chatter during milling
• Centercutting capability allows direct plunge entry into the workpiece
• Corner radius geometry blends floor-to-wall transitions for improved part finish
• Right-hand cut and right-hand flute direction for standard spindle rotation

Compatibility

Designed as an OEM-style replacement or production cutting tool for use in standard 3/8 inch straight shank end mill holders and collet-style toolholders on CNC machining centers and manual knee mills.

Installation Notes

Installation and tool changes must be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Use a properly sized collet or end mill holder to achieve full shank engagement and minimize runout. Verify that holder taper and collet bore are clean and free of chips before seating the tool. Refer to the tooling manufacturer and machine builder guidelines for appropriate speeds, feeds, and depth-of-cut parameters for solid carbide end mills with AlCrTiN coatings.