Hertel E711004003 Ball End Mill 0.625 in 2 Flute Cobalt

Product Description

The HERTEL E711004003 is a single-end cobalt ball end mill designed for milling operations that require a spherical cutting profile. Built from M42 cobalt high-speed steel and finished with a TiCN (titanium carbonitride) coating, this tool delivers heat resistance and edge retention suitable for cutting steel, stainless, and other ferrous materials. The 0.625-inch diameter cutting head has 2 right-hand flutes with a right-hand cutting direction and a 1.625-inch length of cut. Machinists and tool-and-die professionals use this end mill in CNC machining centers and manual mills for profiling, contouring, and finishing work on harder workpiece materials.

This end mill is suited for shop-floor and production machining environments where TiCN-coated cobalt tooling is preferred over uncoated HSS for extended tool life. The 0.625-inch shank diameter matches standard ER and side-lock collet systems common on vertical machining centers. With a 3.75-inch overall length, it provides clearance for moderate-depth setups without excessive overhang. It is sold as a single-end tool, meaning the cutting geometry is on one end only.

Key Features

• M42 cobalt steel construction for heat resistance and hardness retention at elevated cutting temperatures
• TiCN coating reduces friction and extends edge life compared to uncoated HSS tooling
• 0.625-inch ball nose diameter produces accurate spherical profiles and radii in finish passes
• 2-flute geometry provides chip clearance suitable for slotting and profiling in tougher materials
• Right-hand cut and right-hand flute direction for use in standard spindle rotation
• Single-end design with 3.75-inch overall length and 1.625-inch length of cut

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC and manual milling setups using 0.625-inch (5/8-inch) diameter collet or end mill holders.

Installation Notes

Installation is performed by a machinist or toolroom technician using the appropriate collet, shell mill holder, or side-lock holder rated for the 0.625-inch shank diameter. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Verify runout with a dial indicator after seating the tool to confirm concentricity before cutting. Follow the machine tool manufacturer guidelines and applicable shop safety procedures for tool change intervals and inspection.