Hertel GG99914135 Square End Mill 1-3/16 in 6 Flute Hss

Product Description

The HERTEL GG99914135 is a 6-flute square end mill designed for milling operations in metal and alloy workpieces. Built from M7 high speed steel, it offers reliable wear resistance in demanding cutting environments. The tool features a 1.1875-inch milling diameter, a 2-inch length of cut, and a 0.75-inch shank diameter with an overall length of 4.25 inches. The 30-degree spiral helix and right-hand cut with right-hand flute geometry support efficient chip evacuation during peripheral and slot milling. This is an uncoated, single-end tool suited for general-purpose milling on manual mills and CNC machining centers.

This end mill is used in metalworking and machining applications where a larger-diameter, multi-flute tool is needed for profiling, slotting, and side milling cuts. The regular-length configuration fits standard toolholders and is appropriate for production shops, toolrooms, and maintenance machining environments. It is not center-cutting, so it is not intended for plunge entry. Setup with a properly sized collet or end mill holder is required to match the 0.75-inch shank diameter.

Key Features

• M7 high speed steel construction provides toughness and heat resistance in ferrous and non-ferrous cutting
• 6-flute design increases feed rate capability and surface finish quality compared to fewer-flute tools
• 30-degree helix angle promotes smooth cutting action and efficient chip flow
• Right-hand cut, right-hand flute orientation for standard spindle rotation on most machining equipment
• Uncoated finish suitable for use with cutting fluids in general-purpose applications
• Regular length profile fits standard toolholders without extended-reach concerns

Compatibility

Designed as a general-purpose replacement or production end mill for machines accepting a 0.75-inch shank diameter in standard end mill holders or collet chucks.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Secure the 0.75-inch shank in a matched collet or end mill holder to the recommended engagement depth to prevent tool pullout. Verify runout with a dial indicator before initiating a cut, and confirm that cutting parameters are appropriate for M7 high speed steel at the intended spindle speed and feed rate.