Hertel 62889027 Roughing End Mill 3/8 in 4 Flute Cobalt

Product Description

The HERTEL 62889027 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel and finished with a TiAlN coating, it handles elevated cutting temperatures and extends tool life in demanding operations. The 3/8-inch diameter cutter features 4 spiral flutes with a coarse pitch geometry, which breaks chips efficiently and reduces cutting forces during heavy roughing passes. At 1.625 inches length of cut and 3.1875 inches overall length, it fits standard milling chucks and collets. Center-cutting capability allows plunge entry directly into the workpiece. Machinists and tool-and-die professionals install this tool in manual mills and CNC machining centers.

This end mill is suited for roughing operations on ferrous and harder non-ferrous materials where high heat generation is a concern. The TiAlN coating performs well in dry or minimal-lubrication cutting environments, making it a practical choice for production shops running without flood coolant. Right-hand cut and right-hand flute direction are standard for conventional vertical milling setups. It is a single-end tool, meaning it is replaced when the cutting end is worn rather than reversed.

Key Features

• M42 cobalt HSS construction for heat resistance and toughness in heavy roughing cuts
• TiAlN coating extends tool life in dry and high-temperature cutting conditions
• Coarse pitch, 4-flute spiral geometry promotes efficient chip evacuation
• Center-cutting design allows direct plunge entry without pre-drilling
• 3/8-inch shank matches 3/8-inch collets and standard end mill holders
• Right-hand cut and right-hand flute direction for conventional milling compatibility

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 3/8-inch end mill holders, collet chucks, and milling machine spindles accepting 3/8-inch shank tooling.

Installation Notes

Installation is performed by qualified machinists familiar with milling machine setup and tooling procedures. Power down and lock out the spindle before seating or removing the tool from the holder. Ensure the shank is fully seated in the collet or end mill holder and torqued to the tool holder manufacturer specification. Inspect the collet and holder for wear or runout before use, as excessive runout will accelerate edge wear on a roughing geometry.