Accupro 310180 Corner Radius End Mill 5/16 in 4 Flute

Product Description

The ACCUPRO 310180 is a solid carbide corner radius end mill designed for precision milling operations where edge integrity and tool life are critical. The 310180 features a 5/16-inch diameter with a 0.030-inch corner radius and a four-flute, right-hand spiral configuration. An AlCrTiN coating provides thermal resistance and hardness at the cutting edge, making this tool well suited for harder workpiece materials and higher-speed cutting passes. The 38-degree helix angle promotes efficient chip evacuation, and the variable index geometry helps reduce harmonic chatter during aggressive cuts. Centercutting capability allows the tool to plunge directly into the workpiece.

This end mill is appropriate for machining operations on ferrous and hard alloy materials in both production shop and toolroom environments. The single-end, straight-cylindrical shank fits standard collet chucks and end mill holders. With a 13/16-inch length of cut and 2-1/2-inch overall length, it is suited for shoulder milling, slotting, and profiling passes where a corner radius is required to reduce stress concentration at part features. Machinists and CNC operators in job shops and manufacturing facilities are the primary installers.

Key Features

• AlCrTiN coating for elevated temperature resistance and extended tool life in hard materials
• Four-flute right-hand spiral design for balanced cutting performance and chip clearance
• 0.030-inch corner radius with tolerance of plus 0.00200 to minus 0.00200 inches for consistent edge geometry
• Variable index flute spacing reduces chatter and vibration during high-feed passes
• Centercutting geometry permits direct plunge entry without pre-drilling
• Micrograin solid carbide substrate for rigidity and wear resistance

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting a 5/16-inch straight-cylindrical shank end mill in a collet chuck or end mill holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the collet or holder to the recommended gauge line depth and torque the retention hardware to the toolholder manufacturer specification. Inspect the corner radius and cutting edges for chips or coating damage before each use.