Accupro 95168378 Corner Radius End Mill 5/16 in 4 Flute

Product Description

The ACCUPRO 95168378 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 5/16 inch diameter cutting edge with a 0.0200 inch corner radius, which reduces stress concentration at the cutting corner and extends tool life in demanding materials. The 4-flute, right-hand spiral geometry with a variable helix provides efficient chip evacuation and smooth surface finishes. An AlTiN coating adds heat and wear resistance, making this end mill well suited for high-speed dry cutting in hardened steels, stainless, and superalloys. This tool is typically installed and operated by machinists and CNC programmers in production or job shop environments.

This end mill is configured as a single-end, centercutting tool, meaning it can plunge directly into workpiece material in addition to peripheral and slot milling. The 13/16 inch length of cut and 2-1/2 inch overall length make it a regular-length tool appropriate for standard-depth pocketing, profiling, and finishing passes. It is commonly used in CNC machining centers for ferrous and non-ferrous metalwork where tight tolerances and fine surface finishes are required.

Key Features

• 5/16 inch cutting diameter with 0.0200 inch corner radius for reduced edge chipping and improved corner strength
• 4-flute, right-hand spiral flute design with variable helix for reduced chatter and improved surface finish
• AlTiN coating for elevated heat resistance and extended tool life in hard and abrasive materials
• Centercutting capability allows direct plunge entry into workpiece material
• Micrograin solid carbide construction for rigidity and dimensional stability
• 5/16 inch shank diameter matches cutting diameter for straightforward collet or end mill holder setup

Compatibility

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

Installation Notes

Installation is performed by machinists using a compatible collet chuck or end mill holder rated for the 5/16 inch shank diameter. Ensure the machine spindle is fully powered down and locked before inserting or removing tooling. Verify runout with a dial indicator after seating to stay within tolerance for precision finishing work. Follow machine tool manufacturer guidelines and applicable shop safety codes when setting feeds, speeds, and depth of cut for the workpiece material.