Hertel 44839231 Roughing End Mill 5/8 in 4 Flute Cobalt

Product Description

The HERTEL 44839231 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel with a bright, uncoated finish, this end mill delivers the heat and wear resistance required for cutting harder workpiece materials. It features a 5/8 inch mill diameter, four flutes with a coarse pitch, and a 3/4 inch length of cut. The centercutting geometry allows plunge entry as well as peripheral cuts. Right-hand cutting and right-hand flute direction are standard on this tool. Machinists and tool-and-die professionals working in job shops, production environments, or maintenance settings are the primary users.

This roughing end mill is suited for hogging operations on ferrous and non-ferrous metals where rapid stock removal is the priority. The coarse pitch configuration breaks chips aggressively, reducing heat buildup and cutting forces during heavy passes. It fits standard 5/8 inch collet chucks or end mill holders on vertical machining centers, knee mills, and similar spindle equipment. The 2-7/8 inch overall length keeps the tool rigid in standard-depth applications without extended reach.

Key Features

• M42 cobalt HSS construction for elevated heat resistance during aggressive cuts
• Coarse pitch, 4-flute geometry for high chip-load roughing passes
• Centercutting design enables both plunge and peripheral milling
• Bright, uncoated finish suitable for a wide range of workpiece materials
• 5/8 inch shank diameter matches standard collet and end mill holder tooling
• Right-hand cut and right-hand flute for conventional spindle direction use

Compatibility

Designed as an OEM-style single-end roughing end mill for use in standard 5/8 inch end mill holders and collet chucks on vertical machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Power down and lock out the spindle before seating or removing the tool from the holder. Ensure the shank is fully seated to the recommended engagement depth in the collet or holder and torque the retention hardware to the machine or tooling manufacturer specifications. Inspect the cutting edges for chips or wear before each use, as a damaged roughing end mill can cause workpiece damage or tool breakage.