Hertel E299914037 Square End Mill 1-1/16 in 6 Flute Cobalt

Product Description

The HERTEL E299914037 is a cobalt square end mill designed for milling ferrous metals, stainless steels, and high-temperature alloys where high-speed steel lacks heat resistance. It features a 1-1/16 inch cutting diameter, a 1-1/2 inch length of cut, and a 3/4 inch shank diameter, with an overall length of 3-7/8 inches. The six-flute spiral configuration provides increased chip load capacity and improved surface finish compared to four-flute designs. The 30-degree helix angle balances cutting pressure against workpiece deflection. This end mill is uncoated cobalt M42 grade, making it a solid choice when regrinding is part of the shop workflow.

This end mill suits vertical and horizontal milling machine applications in job shops, tool rooms, and production environments. The centercutting geometry allows both peripheral milling and plunge operations without a pre-drilled entry point. The right-hand cut and right-hand flute configuration matches standard spindle rotation on conventional mills and machining centers. Regular-length classification makes it appropriate for general-purpose profiling, slotting, and face milling where extended reach is not required.

Key Features

• 1-1/16 inch cutting diameter with 1-1/2 inch length of cut for solid material removal
• Six flutes increase feed rate potential and improve finish on ferrous materials
• M42 cobalt construction resists heat buildup in harder workpiece materials
• 30-degree spiral helix angle for balanced cutting forces and efficient chip evacuation
• Centercutting design enables direct plunge entry without a pilot hole
• Uncoated finish supports resharpening and regrinding in standard tool room setups

Compatibility

Designed as an OEM-style replacement or direct-use end mill for standard 3/4 inch collet chucks, end mill holders, and Weldon-style tool holders on conventional knee mills and CNC machining centers.

Installation Notes

Installation is performed by a machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the holder and torque set screws to the holder manufacturer specification. Confirm runout with a dial indicator before engaging the cut, as excessive runout accelerates wear on cobalt tooling.