Hertel GG99914132 Square End Mill 3/4 in 2 Flute Hss

Product Description

The HERTEL GG99914132 is a 2-flute, square-end, high speed steel end mill designed for general-purpose milling operations on manual and CNC machining centers. Built from M7 high speed steel in an uncoated finish, it features a 3/4 inch cutting diameter, a 4 inch length of cut, and a 6-1/4 inch overall length that classifies it as an extra-long configuration. The 30-degree spiral helix and right-hand cut with right-hand flute geometry promote efficient chip evacuation and smooth cutting action. Center-cutting capability allows direct plunge entry into the workpiece without a pre-drilled pilot hole. This tool is installed and operated by machinists and toolroom professionals working in production or maintenance environments.

The GG99914132 is suited for slotting, profiling, and peripheral milling in a range of ferrous and non-ferrous materials where high speed steel tooling is appropriate. The extra-long length of cut — starting at 2 inches and extending to the full 4-inch flute length — makes it useful for deep-cavity work, tall workpiece features, and applications where standard-length end mills cannot reach. The 3/4 inch shank diameter provides solid tool-holder engagement across common collet and end mill holder sizes. This tool ships as a single unit.

Key Features

• M7 high speed steel construction for toughness and re-sharpenability
• 30-degree helix angle promotes smooth chip flow and reduced cutting forces
• Center-cutting design allows direct plunge milling without pilot drilling
• Extra-long 4 inch length of cut enables deep-cavity and tall-feature machining
• Right-hand cut and right-hand flute geometry for standard CNC and manual spindle use
• Uncoated finish suitable for regrinding and applications where coating is not required

Compatibility

Designed as a standard 3/4 inch shank square end mill compatible with 3/4 inch collets, end mill holders, and milling chucks used on vertical and horizontal milling machines and CNC machining centers.

Installation Notes

Installation is performed by a qualified machinist. The tool shank must be clean and free of burrs before seating in the holder; tighten the collet or set screw to the tool-holder specification. Confirm spindle direction is set to right-hand rotation before engaging the cut. Inspect the cutting edges for chips or wear before each use, and never exceed the recommended depth of cut for the material and machine rigidity.