Hertel 62888755 Roughing End Mill 5/8 in 4 Flute Cobalt

Product Description

The HERTEL 62888755 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel with a TiAlN coating, this tool handles tough ferrous and stainless materials where standard HSS tooling falls short. The coarse-pitch spiral flute geometry breaks chips efficiently and reduces heat buildup during heavy cuts. With a 5/8 inch cutting diameter, 2.5 inches length of cut, and 4-5/8 inches overall length, it fits standard tool holders used on manual mills and CNC machining centers alike. Machinists and tool-and-die professionals reach for this style of end mill when roughing steel, alloy, and hardened materials before finishing passes.

This roughing end mill suits shop environments performing heavy stock removal on steel, stainless steel, cast iron, and high-temperature alloys. The 4-flute, right-hand cut and right-hand spiral configuration makes it appropriate for conventional and climb milling on vertical machining centers, knee mills, and similar setups. The center-cutting design allows plunge entry, adding flexibility to the tool path without requiring a pre-drilled start hole.

Key Features

• M42 cobalt construction withstands elevated cutting temperatures in tough alloy steels
• TiAlN coating extends tool life and reduces friction in dry or semi-dry cutting conditions
• Coarse-pitch spiral flutes promote aggressive chip evacuation and reduce chatter
• Center-cutting geometry permits direct plunge entry into the workpiece
• Right-hand cut and right-hand flute direction for standard spindle rotation
• Single-end design with matched 5/8 inch shank and cutting diameter for direct collet or end mill holder mounting

Compatibility

Designed as a direct-fit replacement or standard addition for 5/8 inch end mill holders, ER collets, and Weldon-style tool holders on vertical machining centers and manual knee mills requiring a coarse-pitch roughing end mill.

Installation Notes

Installation is performed by machinists using an appropriate end mill holder or collet system rated for the 5/8 inch shank diameter. Ensure the machine spindle is fully stopped and the tool holder is clean and free of chips before seating the tool. Verify runout with a dial indicator after mounting to confirm proper seating. Follow the machine tool manufacturer guidelines and applicable shop safety procedures when securing and testing the tool at operating speed.