Accupro 12178712 Corner Radius End Mill 1/2 in 7 Flute Altin

Product Description

The ACCUPRO 12178712 is a 7-flute corner radius end mill designed for high-performance milling of hardened steels, stainless alloys, and difficult-to-machine materials. Built from micrograin solid carbide and finished with an AlTiN (aluminum titanium nitride) coating, this tool delivers extended tool life and thermal resistance in demanding cutting environments. The 0.02-inch corner radius reduces edge chipping and stress concentration at the cutting corner. With a 1/2-inch diameter, 1-5/8-inch length of cut, and 4-inch overall length, it fits standard 1/2-inch tool holders used across vertical and horizontal machining centers.

This end mill is suited for finish and semi-finish milling operations in aerospace, die and mold, and general precision machining applications. The single-end, centercutting design allows for plunge entries and full slot milling. A 37-degree helix angle promotes efficient chip evacuation and smooth cutting action. The variable index flute spacing helps suppress chatter and vibration during high-speed passes. Machinists and CNC operators in job shops and production environments will find this tool well matched to tight-tolerance profiling and pocket milling work.

Key Features

• Micrograin solid carbide substrate for rigidity and wear resistance
• AlTiN coating extends tool life in high-heat, dry cutting conditions
• 7-flute geometry increases feed rates and improves finish quality
• 0.02-inch corner radius reduces corner chipping and extends edge life
• Variable index flute spacing reduces harmonic chatter
• Centercutting single-end design supports plunge milling and slotting

Compatibility

Designed for use in standard 1/2-inch diameter end mill holders, collet chucks, and shrink-fit tooling systems on CNC vertical and horizontal machining centers.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Ensure the spindle is fully stopped and locked before loading or removing any cutting tool. Verify that the shank is clean and free of chips or burrs before seating in the holder, and torque the retention mechanism to the tool holder specification. Confirm runout with a dial indicator after setup to protect both the tool and the workpiece surface.