Promax 120-01614 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The PROMAX 120-01614 is a solid carbide corner radius end mill engineered for roughing and finishing operations in a single tool. It features a 1/4 inch cutting diameter, a 0.02 inch corner radius, and four flutes with a 40-degree right-hand helix. The AlTiN coating improves heat resistance and tool life during high-speed machining of ferrous and exotic materials. Machined from micrograin carbide stock, this single-end mill delivers consistent dimensional accuracy with a mill diameter tolerance of +0.000 to -0.002 inches. It is suited for machinists, tool-and-die shops, and CNC operators running aggressive material removal passes followed by finish cuts in the same setup.

The 120-01614 fits standard CNC machining centers and manual mills equipped with 1/4 inch straight-cylindrical shank toolholders. Its 3/4 inch length of cut and 2-1/2 inch overall length suit shallow-to-medium-depth pockets, slots, and profiling operations on ferrous alloys, stainless steel, titanium, and hardened materials where the AlTiN coating provides thermal protection. The corner radius geometry reduces stress concentration at the cutting edge, which extends tool life compared to sharp-corner end mills in high-load applications.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention
• AlTiN coating for elevated heat resistance in dry or minimal-lubrication cutting
• 0.02 inch corner radius reduces edge chipping and improves surface finish
• 40-degree right-hand helix promotes efficient chip evacuation
• Centercutting design allows plunge entry into the workpiece
• 1/4 inch straight-cylindrical shank with tight shank diameter tolerance of -0.0001 to -0.0004 inches

Compatibility

Designed for use in 1/4 inch straight-cylindrical shank toolholders on CNC machining centers and manual milling machines. Part of the PROMAX Series 120 end mill line.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and the control in a safe state. Secure the shank to the full recommended engagement depth in the toolholder and verify runout before beginning a cut. A licensed machinist or qualified CNC operator should confirm speeds, feeds, and depth-of-cut parameters based on workpiece material and machine capability. Handle carbide tooling carefully to avoid edge chipping from impact.