Hertel GG99914122 Square End Mill 7/8 in 2 Flute Hss

Product Description

The HERTEL GG99914122 is a square end mill designed for general-purpose milling operations in ferrous and non-ferrous materials. Built from M7 high speed steel with no coating applied, it delivers reliable cutting performance in a range of shop and production environments. The tool features a 7/8 inch cutting diameter, a 1-1/2 inch length of cut, and a 1/2 inch shank diameter for secure toolholder retention. With two flutes and a 30-degree helix angle, it provides efficient chip evacuation during peripheral and slot milling. Licensed machinists and toolroom operators use this style of end mill for profiling, slotting, and step milling on manual mills and CNC machining centers.

This end mill is suited for use in job shops, toolrooms, and production environments where a standard-length, two-flute square end mill is appropriate. The centercutting geometry allows direct plunge entry into a workpiece without a pre-drilled start hole. Right-hand cut and right-hand flute configuration match conventional milling spindle rotation. The regular-length body and 3-1/2 inch overall length make it a practical choice for general-depth milling applications within the 1-1/2 to 2 inch length-of-cut range.

Key Features

• M7 high speed steel construction for toughness and wear resistance in a variety of work materials
• Uncoated finish suitable for use with cutting fluids or dry in softer materials
• 30-degree helix angle spiral flute promotes smooth cutting action and chip flow
• Centercutting design allows direct plunge milling without pilot drilling
• Right-hand cut, right-hand flute for standard spindle direction compatibility
• Two-flute geometry maximizes chip clearance in slotting and deep-pocket applications

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 1/2 inch straight-shank toolholders used in manual milling machines and CNC machining centers.

Installation Notes

Installation is performed by a machinist or toolroom technician. Ensure the machine spindle is fully stopped and power is off before loading or removing end mills from the toolholder. Use a properly sized collet or end mill holder that matches the 1/2 inch shank diameter to avoid runout and tool pullout under load. Follow shop safety practices and applicable OSHA machine guarding requirements when operating milling equipment.