Promax 129-64014 Corner Radius End Mill 5/8 in 4 Flute

Product Description

The PROMAX 129-64014 is a solid carbide corner radius end mill designed for precision milling operations in metal cutting and machining environments. Built from micrograin carbide and coated with AlTiN (aluminum titanium nitride), it handles demanding cutting applications where heat and wear resistance are critical. The 5/8 inch diameter tool features a 0.06 inch corner radius that reduces stress concentration at the cutting edge, extending tool life in high-feed and contour milling passes. With 4 flutes and a 40-degree helix angle, it delivers efficient chip evacuation and smooth surface finishes. This tool is installed and operated by machinists and CNC programmers in production and job-shop environments.

The 129-64014 is suited for use in vertical machining centers, CNC mills, and manual knee mills equipped with appropriate collet or end mill holders accepting a 5/8 inch shank. It performs well in ferrous metals, hardened steels, stainless alloys, and cast iron where AlTiN coating provides thermal protection at elevated cutting speeds. The 1-1/4 inch length of cut and 3-1/2 inch overall length make it appropriate for moderate-depth pocketing, profiling, and finishing passes in materials that generate significant cutting heat. It is a single-end tool and is not center-cutting, so it should not be used for direct plunging operations.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• AlTiN coating provides heat resistance for high-speed cutting in ferrous and hardened materials
• 0.06 inch corner radius reduces edge chipping and extends tool life in contour and profiling cuts
• 40-degree helix angle promotes efficient chip evacuation and smooth surface finish
• Right-hand flute direction and right-hand cutting geometry for standard CNC and manual mill setups
• Not center-cutting - ramp or helical entry required for plunge-start operations

Compatibility

Designed for use in standard 5/8 inch collet chucks, end mill holders, or hydraulic tool holders on CNC vertical machining centers and manual mills. Part of the PROMAX Series 129 corner radius end mill line.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Secure the 5/8 inch shank in a clean, undamaged tool holder and torque the retention mechanism per the holder manufacturer specifications. Verify runout with a dial indicator before first use, as excessive runout will accelerate corner radius wear unevenly. Do not use this tool for direct plunge entry - program a ramp or helical entry path to protect the non-center-cutting geometry.