Hertel E211200802 Ball End Mill 1/8 in 2 Flute Hss

Product Description

The HERTEL E211200802 is a double-end ball end mill designed for precision milling operations across a wide range of materials. Built from M7 high speed steel with a bright, uncoated finish, it features a 1/8-inch diameter cutting head, a 3/8-inch length of cut, and a 30-degree right-hand spiral helix. The double-end configuration provides two usable cutting ends, extending tool life before replacement. At 3-1/16 inches overall length with a 3/8-inch shank diameter, this tool fits standard milling chucks and collets used in vertical mills, CNC machining centers, and manual knee mills.

This ball end mill is suited for contour milling, profiling, and finishing passes on ferrous and non-ferrous workpieces in job shop, toolroom, and maintenance machining environments. The 2-flute geometry provides adequate chip clearance for general-purpose slotting and profiling at smaller diameters. Typical users include machinists, tool-and-die makers, and maintenance technicians performing precision material removal on fixtures, molds, and mechanical components.

Key Features

• Double-end design provides two cutting ends per tool, reducing per-cut tooling cost
• M7 high speed steel construction offers toughness and wear resistance in general-purpose machining
• 30-degree right-hand spiral helix promotes smooth cutting action and chip evacuation
• Bright, uncoated finish suitable for use with cutting fluids on a variety of workpiece materials
• 2-flute configuration maximizes chip clearance at 1/8-inch diameter
• Standard length geometry fits conventional milling machine setups without extended-reach toolholders

Compatibility

Designed as a standard-fitment replacement or new-installation ball end mill for milling machines and CNC machining centers accepting a 3/8-inch shank diameter collet or end mill holder.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the machine spindle is fully de-energized and at a complete stop before changing tooling. Secure the 3/8-inch shank in a properly sized collet or end mill holder, torquing the drawbar or collet nut to the machine manufacturer's specification. Inspect both cutting ends for chipping or wear before use, and confirm proper runout with a dial indicator where tolerance is critical.