Hertel 62889084 Roughing End Mill 9/16 in 4 Flute Cobalt

Product Description

The HERTEL 62889084 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a TiCN coating, it delivers extended tool life and heat resistance in demanding cutting applications. The 9/16 inch (0.5625 inch) cutting diameter pairs with a 1/2 inch shank and a 1-3/8 inch length of cut, making it well-suited for slotting, profiling, and roughing passes where stock removal rate matters more than finish quality. With 4 flutes in a fine pitch spiral configuration and right-hand cutting and flute direction, this end mill is a shop-floor tool installed by machinists and tool-and-die professionals.

This roughing end mill is used in CNC machining centers and manual knee mills for roughing operations on ferrous and non-ferrous materials. The fine pitch and TiCN coating make it appropriate for cutting through harder steels and alloys where tool wear is a concern. The 3-3/8 inch overall length allows standard reach in most vertical milling setups without requiring extended-reach toolholders. It is a non-centercutting design, meaning it is not suitable for plunge cutting and should be entered from the workpiece edge or through a pre-drilled hole.

Key Features

• M42 cobalt HSS construction for elevated heat and wear resistance
• TiCN coating extends tool life in harder ferrous materials
• Fine pitch, 4-flute spiral geometry optimized for roughing passes
• Right-hand cut and right-hand flute direction for standard spindle setups
• 1/2 inch shank diameter fits standard collets and end mill holders
• Non-centercutting design — requires edge entry or pre-drilled lead hole

Compatibility

Designed as an OEM-style replacement or direct-use roughing end mill compatible with standard 1/2 inch collet chucks and end mill holders on CNC machining centers and manual vertical mills.

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. Secure the shank in a properly sized 1/2 inch collet or end mill holder, tightening to the toolholder manufacturer's specified torque range. Because this is a non-centercutting end mill, always enter the cut from the workpiece edge or an existing bore — never plunge directly into solid material.