Hertel E2030008 Square End Mill 0.125 in 2 Flute Cobalt

Product Description

The HERTEL E2030008 is a cobalt square end mill designed for milling operations in ferrous and difficult-to-machine materials. With a 0.125-inch cutting diameter and a 0.375-inch length of cut, this two-flute tool delivers efficient chip evacuation and clean square shoulder profiles. Manufactured from M42 cobalt high-speed steel, it provides increased heat and wear resistance compared to standard M2 HSS. The 30-degree spiral helix angle promotes smooth cutting action and reduces chatter. This is a single-end, uncoated tool with right-hand cut and right-hand flute geometry, suited for machinists and tool-and-die professionals running conventional or CNC milling equipment.

This end mill is intended for use in vertical mills, machining centers, and knee mills performing slotting, profiling, and plunging operations. Its centercutting capability allows direct plunge entry without a pre-drilled hole. The reduced 0.125-inch diameter makes it appropriate for fine detail work, narrow slots, and small-feature milling in steel, stainless steel, cast iron, and high-temperature alloys. The 0.375-inch shank diameter is compatible with standard ER collets and end mill holders commonly found in job shop and production environments.

Key Features

• M42 cobalt construction for elevated heat resistance in tough materials
• Centercutting design allows direct plunge entry without pilot drilling
• 30-degree helix angle promotes smooth chip flow and reduced cutting forces
• Two-flute geometry provides maximum chip clearance in slotting applications
• Right-hand cut and right-hand spiral flute for standard spindle compatibility
• Uncoated finish suitable for use with cutting fluid in most ferrous applications

Compatibility

Designed as a standard-shank cobalt square end mill for use with 0.375-inch ER collets, shrink-fit holders, or set-screw end mill holders on vertical mills and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the holder to the recommended gauge line and torque the retention hardware per the toolholder manufacturer specifications. Always verify runout with a dial indicator before beginning a cut, and use appropriate cutting fluid for the workpiece material to extend tool life.