Hertel EG018903 Ball End Mill 0.5 in 4 Flute Solid Carbide

Product Description

The HERTEL EG018903 is a solid carbide ball end mill designed for high-performance milling operations in metalworking and machining applications. Built with a 0.5-inch diameter and four flutes, this single-end tool delivers smooth, consistent stock removal on contoured surfaces, cavities, and 3D profiles. The TiCN (Titanium Carbonitride) coating increases surface hardness and reduces friction, extending tool life compared to uncoated carbide. With a 1.5-inch length of cut and 6-inch overall length, this mill reaches deeper features while maintaining rigidity. It is sized for standard 0.5-inch collet or end mill holders and is suited for use on CNC machining centers and manual knee mills.

This ball end mill is used in job shops, tool and die operations, and production machining environments. It performs well on ferrous and non-ferrous materials including steel, stainless steel, cast iron, and aluminum alloys. The right-hand cutting direction and right-hand flute spiral make it compatible with conventional CNC spindle setups. Typical applications include mold and die work, profile milling, finishing passes on contoured workpieces, and semi-finishing of pockets and slots requiring a radius bottom.

Key Features

• 0.5-inch ball nose diameter for radius-bottom profiling and 3D contouring
• Four-flute geometry provides improved feed rates and surface finish over two-flute designs
• TiCN coating increases wear resistance and reduces built-up edge on hard materials
• Solid carbide construction delivers rigidity and thermal stability at elevated cutting speeds
• Single-end design with 0.5-inch shank fits standard collet chucks and end mill holders
• Right-hand cut and right-hand helix for conventional CNC spindle compatibility

Compatibility

Designed as a direct-fit replacement or standard selection for 0.5-inch end mill holders, ER collet chucks, and Weldon-style holders used on CNC vertical machining centers and manual mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Always power down and lock out the spindle before inserting or removing the tool from the holder. Ensure the shank is fully seated to the minimum engagement depth recommended by the holder manufacturer and that the collet nut or set screw is torqued to the holder specification. Inspect the cutting edges and coating for chips or damage before each use.