Hertel E2042200 Square End Mill 2 in 6 Flute Cobalt

Product Description

The HERTEL E2042200 is a 6-flute cobalt square end mill designed for high-performance milling in ferrous and difficult-to-machine materials. Built from M42 cobalt high-speed steel, it delivers heat and wear resistance well beyond standard M2 HSS tooling. The 2-inch cutting diameter, 2-inch length of cut, and 30-degree right-hand spiral helix make this tool well suited for slotting, peripheral milling, and side milling operations where chip evacuation and tool life are critical. The centercutting geometry allows plunge entry without a pre-drilled hole. Licensed machinists and toolroom operators are the primary users for this class of end mill.

This end mill is intended for use in vertical machining centers, knee mills, and manual or CNC milling machines capable of handling a 1.25-inch shank diameter. It performs in ferrous metals including alloy steels, stainless steel, and cast iron, as well as in high-temp alloys where cobalt tooling is preferred over carbide in interrupted-cut applications. The bright uncoated finish is appropriate for general-purpose use and allows easy visual inspection of the cutting edges between operations.

Key Features

• M42 cobalt construction for elevated heat resistance and extended tool life in tough materials
• 6-flute design increases feed rates and improves surface finish compared to 4-flute end mills in finishing passes
• 30-degree right-hand helix promotes smooth chip flow and reduces cutting forces
• Centercutting capability allows direct plunge milling without a pilot hole
• Bright uncoated finish suitable for general ferrous and high-temp alloy applications
• Regular length configuration for standard reach milling setups

Compatibility

Designed for use in milling machines and machining centers with ER, CAT, BT, or straight-shank collet systems capable of accepting a 1.25-inch shank diameter. Confirm spindle torque and RPM ratings are appropriate for a 2-inch cobalt end mill before use.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Secure the 1.25-inch shank in a properly sized collet chuck or end mill holder and verify runout before cutting. Power down and lock out the spindle before changing tooling. Follow the machine manufacturer's recommended speeds and feeds for cobalt end mills at this diameter, and confirm workholding is rigid enough to handle the cutting forces associated with a 6-flute, 2-inch tool.