Hertel E5250008 Ball End Mill 0.125 in 4 Flute Carbide

Product Description

The HERTEL E5250008 is a solid carbide ball end mill designed for precision milling operations in ferrous and non-ferrous materials. With a 0.125-inch mill diameter and a 0.5-inch length of cut, this tool delivers accurate contouring, slotting, and profiling in tight geometries. The 4-flute configuration and 30-degree right-hand helix promote smooth chip evacuation and stable cutting action. At 1.5 inches overall length with a 0.125-inch shank diameter, the E5250008 fits standard collet and end mill holders used in CNC machining centers and manual mills. It ships as a single-end, uncoated tool suitable for dry or mist-cooled applications.

This ball end mill is used in job shop, tool-and-die, and production machining environments where fine detail work and 3D contouring are required. Common applications include mold and die work, radius profiling, and finishing passes in aluminum, steel, stainless, and similar materials. The small diameter makes it well-suited for intricate cavity work and tight-corner milling where larger tooling cannot reach. Machinists and CNC operators in both prototype and production settings will find this tool appropriate for finish and semi-finish milling passes.

Key Features

• 0.125-inch mill diameter for fine detail and small-feature work
• 4-flute geometry provides increased chip load capacity and improved surface finish
• 30-degree right-hand helix supports smooth chip flow and reduced chatter
• Solid carbide construction offers rigidity and wear resistance over high-speed steel alternatives
• Uncoated finish suitable for use across a broad range of workpiece materials
• Single-end design with 0.125-inch shank for standard collet compatibility

Compatibility

Designed as an OEM-style replacement or direct application tool for use in standard 0.125-inch collets and end mill holders on CNC machining centers and manual knee mills requiring a 4-flute ball end mill configuration.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator familiar with tool-holding systems. Ensure the machine spindle is fully powered down and locked before changing tooling. Use a calibrated collet or shrink-fit holder torqued to the machine manufacturer's specification. Verify runout with a dial indicator before beginning any cutting operation to prevent premature tool wear or breakage.