Hertel E299914218 Square End Mill 2 in 6 Flute Cobalt

Product Description

The HERTEL E299914218 is a 2-inch diameter cobalt square end mill designed for heavy material removal in milling applications. Built from M42 cobalt high-speed steel, this tool delivers heat and wear resistance suited for difficult-to-machine alloys and stainless steels. It features 6 flutes with a 30-degree right-hand spiral helix, providing smooth chip evacuation and stable cutting action. With a 5-inch length of cut and 8.75-inch overall length, this is a full-size end mill intended for production and job-shop environments where reach and rigidity matter. It is centercutting, allowing direct plunge entry without a pre-drilled hole.

This end mill is used in vertical machining centers and manual knee mills for roughing and finishing passes on ferrous and non-ferrous materials. The 2-inch shank diameter matches standard large-bore toolholders, collet chucks, and end mill holders used in industrial setups. It is uncoated and suited for applications where coolant flood is available and coating is not required. Machinists, tool and die makers, and CNC operators in aerospace, mold and die, and general metalworking shops are the primary users. The regular-length designation makes it appropriate for standard depth-of-cut work without excessive overhang.

Key Features

• M42 cobalt construction for elevated heat resistance and tool life in tough materials
• 6-flute spiral design with 30-degree helix angle for efficient chip flow and surface finish
• Centercutting geometry permits direct plunge milling without pilot drilling
• Right-hand cut and right-hand flute configuration for standard spindle use
• Uncoated finish suitable for flood-coolant machining environments
• 2-inch shank diameter for secure fit in large-bore toolholders

Compatibility

Designed as a direct-fit replacement for standard 2-inch shank large-bore end mill holders, collet chucks, and Weldon-style holders used on vertical machining centers and manual mills. No specific model compatibility data was provided by the manufacturer for this part number.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding torque and runout specifications. Ensure the spindle and toolholder bores are clean and free of chips before seating the shank. Confirm proper axial depth of engagement in the holder before tightening set screws or collet nuts. Never exceed the machine spindle's rated speed or the tool manufacturer's recommended cutting parameters for the workpiece material.