Hertel GG99914236 Keyway End Mill 0.623in 2 Flute Hss

Product Description

The HERTEL GG99914236 is a 2-flute high speed steel keyway end mill designed for milling keyways, slots, and peripheral cuts in metalworking applications. The cutter measures 0.623 inches in diameter with a 1.3125-inch length of cut and a 3.4375-inch overall length. The 5/8-inch shank diameter provides solid tool holder engagement, and the 30-degree helix angle promotes smooth chip evacuation during operation. The uncoated finish makes this tool well suited for general-purpose ferrous and non-ferrous cutting. Installation and use are handled by machinists and tooling technicians in production and maintenance environments.

This end mill is used in vertical milling machines, knee mills, and machining centers where keyway and slot cutting is required. The centercutting geometry allows the tool to plunge directly into the workpiece, expanding its range of applications to include pocketing and profiling operations. The spiral flute design and 30-degree helix angle support consistent chip removal in both conventional and climb milling passes. Typical applications include keyway cutting in shafts, die work, and general slot milling in steel, cast iron, aluminum, and similar materials.

Key Features

• Centercutting geometry allows direct plunge entry into the workpiece
• 2-flute spiral design supports efficient chip evacuation in slot and keyway cuts
• 30-degree helix angle reduces cutting forces and improves surface finish
• High speed steel construction provides toughness for interrupted cuts and general-purpose milling
• Uncoated finish suits a broad range of workpiece materials without thermal coating concerns
• 5/8-inch shank diameter fits standard collets and end mill holders

Compatibility

Designed as a standard-shank keyway end mill compatible with 5/8-inch collets, end mill holders, and shrink-fit tooling systems used in vertical milling machines and CNC machining centers.

Installation Notes

This tool is installed by machinists and tooling technicians. Secure the shank fully within the collet or end mill holder to the recommended engagement depth before operation. Inspect the tool for chipping or wear before each use and replace if cutting edges are damaged. Follow machine manufacturer guidelines for spindle speed, feed rate, and depth of cut appropriate to the workpiece material.