Hertel GG111016 Ball End Mill 0.25in 2 Flute Hss

Product Description

The HERTEL GG111016 is a single-end ball end mill designed for milling contoured surfaces, slots, and three-dimensional profiles in metal and similar materials. Built from M7 high speed steel with an uncoated finish, it features a 0.25-inch diameter cutting head and a 30-degree right-hand spiral helix. With 2 flutes and a 0.625-inch length of cut, it delivers efficient chip evacuation in a compact form factor. The extended reach design, with a 1.5-inch reach length, makes it suitable for accessing deeper pockets and complex geometries. Licensed machinists and tool-and-die professionals are the primary installers and operators of this tool.

This end mill is used in manual and CNC milling operations across job shops, tool rooms, and production environments. It is well suited for finishing passes on contoured surfaces and for profiling work in ferrous and non-ferrous metals. The 3/8-inch shank diameter is compatible with standard milling chucks, collet holders, and end mill holders found on knee mills and vertical machining centers. Its single-end configuration is standard for replaceable tooling setups where worn tools are swapped out individually.

Key Features

• M7 high speed steel construction for toughness in interrupted cuts and general-purpose milling
• Ball end geometry for contouring, profiling, and 3D surface milling
• 30-degree right-hand helix for smooth cutting action and chip flow
• Extended reach with 1.5-inch reach length for deeper pocket access
• Uncoated finish suitable for use with cutting fluids and coolants
• 2-flute design balances chip clearance and surface finish in slotting and profiling

Compatibility

Designed as a standard single-end ball end mill with a 3/8-inch shank, compatible with conventional collet chucks and end mill holders used on vertical 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 locked out before changing tooling. Seat the shank fully in the collet or chuck and tighten to the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a cutting pass, and confirm correct spindle rotation direction matches the right-hand cutting geometry of this tool.