Hertel GG99914125 Square End Mill 1-5/8 in 2 Flute Hss

Product Description

The HERTEL GG99914125 is a square end mill designed for general-purpose milling operations in metal fabrication and machining environments. Built from M7 high speed steel, this uncoated, center-cutting tool features a 1.625-inch cutting diameter and a 30-degree helix angle with spiral fluting. The right-hand cut and right-hand flute geometry produce clean chip evacuation during face milling, slotting, and profiling passes. With a 2-flute configuration, this end mill is well suited for applications requiring aggressive material removal with adequate chip clearance. Machinists and toolroom technicians are the primary installers and operators of this tool.

This end mill is intended for use in vertical and horizontal milling machines, CNC machining centers, and manual knee mills where a large-diameter, short-reach cutter is required. The 0.75-inch shank diameter fits standard collet and end mill holder setups commonly found in production and toolroom settings. With a regular-length designation and a 1.625-inch length of cut, it handles moderate-depth passes in ferrous and non-ferrous materials without excessive tool deflection.

Key Features

• 1.625-inch cutting diameter with 1.625-inch length of cut for moderate-depth milling passes
• M7 high speed steel construction provides good toughness and wear resistance in general machining
• 30-degree helix angle with spiral fluting promotes efficient chip flow and smooth cutting action
• Center-cutting design allows plunge entry directly into the workpiece
• 2-flute geometry maximizes chip clearance in slotting and full-width cuts
• Right-hand cut and right-hand flute, uncoated finish — ready to use or re-coat as needed

Compatibility

Designed as a direct-fit replacement or standard tooling selection for milling machines and machining centers accepting a 0.75-inch shank end mill holder or collet.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Ensure the machine spindle is fully powered down and the tool holder is clean and free of debris before seating the shank. Confirm runout with a dial indicator after securing the tool in the holder. Follow the machine manufacturer's torque specifications for the tool holder fasteners and observe appropriate feeds and speeds for the workpiece material and tool diameter.