Hertel EM250056 Ball End Mill 0.875 in 4 Flute Altin Carbide

Product Description

The HERTEL EM250056 is a solid carbide ball end mill designed for high-performance milling operations in ferrous and non-ferrous materials. It features a 0.875 inch cutting diameter with a 1.5 inch length of cut and a 4.0 inch overall length. The four-flute, right-hand cutting geometry with a 30-degree helix angle promotes efficient chip evacuation and smooth surface finishes. An AlTiN coating provides thermal resistance and extended tool life in demanding applications. The micrograin carbide substrate adds toughness and wear resistance at high cutting speeds. This tool is intended for use by machinists and tooling professionals in CNC machining centers and manual mills.

The EM250056 is suited for profiling, slotting, contouring, and finishing passes in mold and die work, aerospace component machining, and general precision machining. Its single-end configuration and 0.875 inch shank diameter allow direct chucking into standard end mill holders or collet chucks without adapters in most setups. The right-hand flute direction and 30-degree helix make it well matched to climb milling strategies in medium to hard steels and alloy materials.

Key Features

• 0.875 inch ball end cutting diameter for radius profiling and 3D contouring
• AlTiN coating for high heat resistance and extended tool life in hard and abrasive materials
• Micrograin solid carbide substrate for rigidity and edge retention at high RPM
• 4-flute, right-hand geometry with 30-degree helix for efficient chip flow and surface finish
• 1.5 inch length of cut with 4.0 inch overall length for reach in moderate-depth cavities
• Single-end design with 0.875 inch shank for direct mounting in standard toolholders

Compatibility

Designed as an OEM-style replacement or direct-purchase solid carbide ball end mill for use in CNC machining centers and manual mills accepting 0.875 inch shank end mill holders or collet chucks.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank to the recommended engagement depth in the holder and torque set screws or collet nuts per the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before each use and replace the tool if edge integrity is compromised.