Hertel 84511575 Roughing End Mill 1/4 in 4 Flute Cobalt

Product Description

The HERTEL 84511575 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel and finished with a Titanium Nitride (TiN) coating, it handles tough ferrous and non-ferrous materials with good wear resistance and heat tolerance. The coarse-pitch, 4-flute geometry with right-hand cut and right-hand flute direction drives efficient chip evacuation during heavy roughing passes. The 1/4-inch cutting diameter pairs with a 3/8-inch shank, and the center-cutting design allows plunge entry. Machinists and tool-and-die shops rely on this style of end mill for fast stock removal before finishing passes.

This end mill is suited for use on manual knee mills, CNC machining centers, and bridge mills where roughing passes are required on steel, stainless, cast iron, and similar materials. The TiN coating extends tool life in dry or lightly lubricated cutting environments. With a 1/4-inch length of cut and a 2-1/16-inch overall length, it fits standard short-reach applications and is appropriate for production and job-shop environments alike.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance
• Titanium Nitride (TiN) coating reduces friction and extends tool life
• Coarse-pitch 4-flute geometry promotes aggressive chip removal during roughing
• Center-cutting design permits direct plunge entry into workpiece
• Right-hand cut and right-hand flute direction for standard spindle rotation
• 3/8-inch shank diameter fits common collet and end mill holder sizes

Compatibility

Designed as an OEM-style roughing end mill for use in standard end mill holders, collet chucks, and milling chucks accepting a 3/8-inch shank diameter on manual or CNC milling machines.

Installation Notes

Installation is performed by qualified machinists following shop safety procedures. Always power down and lock out the spindle before changing tooling. Ensure the shank is fully seated and the tool holder drawbar or collet nut is torqued according to the machine manufacturer's specifications. Inspect the cutting edges for chips or wear before each use.