Hertel E211002402 Ball End Mill 0.375 in 2 Flute Hss

Product Description

The HERTEL E211002402 is a single-end ball end mill designed for milling contoured surfaces, slots, and three-dimensional profiles in a wide range of metalworking applications. It features a 0.375-inch diameter cutting head with a 0.75-inch length of cut and a 2.5-inch overall length. Constructed from M7 high speed steel, this tool runs uncoated with a 30-degree right-hand spiral helix and right-hand cutting direction. With two flutes and a regular-length profile, it suits standard milling operations where HSS tooling is preferred over carbide for toughness and regrindability.

This ball end mill is appropriate for use on manual mills, CNC machining centers, and knee mills in job shop, maintenance, and production environments. It is suited for profiling, contouring, and pocket milling in softer steels, aluminum, brass, and similar machinable metals. The 3/8-inch shank diameter fits standard ER collets, side-lock holders, and weldon-style tool holders commonly found in both manual and CNC setups. It is a single-end tool, meaning the cutting geometry is on one end only.

Key Features

• 0.375-inch ball end diameter for contour and profile milling
• M7 high speed steel construction for toughness and regrindability
• 30-degree right-hand helix with right-hand cutting direction
• 2-flute geometry for efficient chip evacuation in softer materials
• Uncoated finish — ready for regrinding or use with cutting fluid
• Regular-length profile with 0.75-inch LOC and 2.5-inch OAL

Compatibility

Designed as a standard single-end ball end mill with a 3/8-inch shank diameter, compatible with ER collet chucks, Weldon-style end mill holders, and similar 3/8-inch bore toolholding systems used on manual and CNC milling machines.

Installation Notes

Installation is performed by machinists or toolroom personnel. Power down and lock out the spindle before changing tooling. Seat the shank fully into the holder to the recommended engagement depth and torque set screws or collet nuts per the toolholder manufacturer specifications. Inspect the cutting edges for chips or wear before each use and confirm runout with a dial indicator when precision profiling is required.