Hertel GG99914213 Ball End Mill 0.8125 in 2 Flute Hss

Product Description

The HERTEL GG99914213 is a single-end ball end mill designed for contouring, profiling, and 3D milling operations in ferrous and non-ferrous materials. It features a 0.8125-inch (13/16 inch) ball nose diameter and is manufactured from M7 high speed steel, offering solid toughness and wear resistance in general-purpose machining environments. The 2-flute spiral configuration supports effective chip evacuation, and the 30-degree right-hand helix angle balances cutting efficiency with surface finish quality. This tool is intended for machinists and toolroom professionals working on manual or CNC milling machines.

This end mill suits a wide range of shop applications including die and mold work, pocket profiling, and contour milling on steel, aluminum, and similar materials. With a 2-inch length of cut and a 4.25-inch overall length paired with a 0.75-inch shank diameter, the GG99914213 fits standard ER or side-lock toolholders common in both manual bridgeport-style mills and CNC machining centers. It is appropriate for job shops, toolrooms, and maintenance machining environments.

Key Features

• 0.8125-inch ball nose diameter for accurate contouring and profiling cuts
• M7 high speed steel construction for toughness in interrupted cuts and general-purpose use
• 2-flute spiral design promotes chip clearance in slotting and profiling operations
• 30-degree right-hand helix angle balances cutting forces and surface finish
• Uncoated finish suitable for use with standard cutting fluids and oils
• Single-end configuration with 0.75-inch shank fits common toolholder styles

Compatibility

Designed as a general-purpose replacement or stock ball end mill for milling machines accepting a 0.75-inch straight shank. Compatible with standard ER collet chucks, Weldon-style side-lock holders, and similar toolholding systems sized for a 0.75-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the shank to the full recommended engagement depth in the toolholder and torque the clamping screw or collet nut per the toolholder manufacturer specification. Verify runout with a dial indicator before initiating a cutting pass.