Hertel E299915980 Square End Mill 5/8 in 2 Flute Cobalt

Product Description

The HERTEL E299915980 is a cobalt square end mill designed for milling operations in ferrous and difficult-to-machine materials. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention at elevated cutting temperatures. The 5/8 inch cutting diameter pairs with a 1-5/8 inch length of cut and a 3-3/4 inch overall length. Two spiral flutes at a 30-degree helix angle promote efficient chip evacuation and smooth cutting action. The tool is uncoated and centercutting, allowing both peripheral and plunge cuts. It is suited for manual mills and CNC machining centers in production and job-shop environments.

This end mill is used in general-purpose milling applications including slotting, profiling, and facing on steel, stainless steel, cast iron, and similar materials. The right-hand cut and right-hand flute configuration matches standard spindle setups. The 5/8 inch shank diameter fits standard ER, R8, and similar collet systems commonly found in vertical milling machines and machining centers. Its M42 cobalt composition makes it a practical choice when carbide is cost-prohibitive or when interrupted cuts would risk carbide chipping.

Key Features

• M42 cobalt high-speed steel construction for heat resistance and toughness
• 30-degree helix spiral flute for efficient chip evacuation
• Centercutting geometry allows direct plunge entry
• Right-hand cut and right-hand flute for standard spindle compatibility
• Uncoated finish suitable for use with cutting fluids on ferrous materials
• Matched shank and cutting diameter at 5/8 inch for collet consistency

Compatibility

Designed as an OEM-style replacement or standard tooling selection for vertical mills and CNC machining centers accepting a 5/8 inch shank collet or holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank to the full depth recommended for the collet or tool holder in use to minimize runout. Verify proper tool projection and confirm feed and speed parameters match the workpiece material before initiating a cut.