Hertel E202004002 Ball End Mill 0.625 in 4 Flute Hss

Product Description

The HERTEL E202004002 is a single-end ball end mill designed for milling contoured surfaces, slots, and three-dimensional profiles in metal workpieces. Built from M7 high speed steel with an uncoated finish, it measures 0.625 inches in diameter with a 1.625-inch length of cut and a 3.75-inch overall length. The 4-flute spiral configuration with a 30-degree right-hand helix delivers a balance of chip evacuation and surface finish quality. This tool is suited for general-purpose milling operations where HSS tooling is preferred over carbide, particularly in lower-speed setups or on manual mills and older CNC machining centers.

This end mill fits residential shop, production floor, and maintenance machining applications where ball nose geometry is required to produce radiused pockets, fillets, and complex contoured cuts. The 0.625-inch shank diameter matches the cutting diameter, allowing direct chuck or collet mounting without a reduction bushing. Right-hand cutting direction and spiral flute geometry make it compatible with standard right-hand spindle configurations. It is a regular-length tool, appropriate for setups where extended reach is not required and maximum rigidity is a priority.

Key Features

• Ball nose geometry for contouring, profiling, and radiused pocket milling
• M7 high speed steel construction for toughness in interrupted cuts and general-purpose applications
• 4-flute spiral design with 30-degree right-hand helix for balanced chip flow and surface finish
• Uncoated finish suitable for use with cutting fluids on ferrous and non-ferrous materials
• Single-end tool with matching 0.625-inch shank and cutting diameter for straightforward collet mounting
• Regular length for maximum rigidity in standard-depth milling setups

Compatibility

Designed as an OEM-style replacement or direct-fit end mill for standard 0.625-inch collet or chuck toolholders on right-hand spindle milling machines.

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. The shank should be inserted to the full recommended engagement depth in the collet or chuck to prevent pullout under cutting loads. Verify runout with a dial indicator after mounting before beginning a cut.