Accupro 14556412 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The ACCUPRO 14556412 is a solid carbide corner radius end mill designed for precision milling in ferrous and hardened materials. It features a 3/8 inch cutting diameter with a 0.02 inch corner radius that reduces stress concentration at the cutting edge and extends tool life in demanding applications. The 4-flute, right-hand spiral geometry paired with an AlTiN+ coating supports high-speed, dry, or minimal-lubrication machining environments. With a 7/8 inch length of cut and 2-1/2 inch overall length, this single-end, centercutting tool is sized for standard milling operations on vertical machining centers and manual mills. Machinists and CNC operators select this geometry for finishing passes on steel, stainless, cast iron, and similar workpiece materials.

This end mill fits production and job-shop milling operations requiring tight corner geometry control. The centercutting design allows plunge entry, making it suitable for slot milling, profiling, and pocket milling in a single setup. The straight-cylindrical 3/8 inch shank seats directly into standard ER collets, milling chucks, or shrink-fit holders without modification. It is most commonly used in vertical CNC machining centers in both prototype and production runs where part geometry calls for a radiused inside corner rather than a sharp 90-degree intersection.

Key Features

• 0.02 inch corner radius reduces edge chipping and stress risers on finished part corners
• AlTiN+ coating improves heat resistance and wear life in ferrous and high-temp alloy cuts
• 4-flute, right-hand spiral with centercutting capability supports slotting and plunge entry
• Micrograin solid carbide substrate provides rigidity and edge retention at elevated surface speeds
• 40-degree helix angle promotes efficient chip evacuation and smooth surface finish
• Straight-cylindrical shank compatible with standard collet and milling chuck toolholders

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC vertical machining centers and manual knee mills accepting 3/8 inch straight-shank end mills in ER, Weldon, or milling chuck holders.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from its holder. Seat the shank to the full recommended insertion depth in the collet or chuck to minimize overhang and runout. Verify holder torque and tool runout with a dial indicator before initiating a cutting cycle.