Osg HP441-5000-BN Ball End Mill 0.5in 4 Flute Carbide

Product Description

The OSG HP441-5000-BN is a solid carbide ball end mill built for demanding material removal in both roughing and finishing operations. Part of the HP441BN Hy-Pro-Carb series, it features a 0.5 inch diameter cutting edge, a 1 inch length of cut, and a 3 inch overall length. The four-flute design pairs with a 35-degree helix angle and a TiAlN PVD coating to extend tool life across a broad range of workpiece materials. The straight cylindrical shank measures 0.5 inches in diameter. Machinists and CNC operators working in job shops, aerospace, or precision manufacturing environments are the primary users of this tool.

This end mill is rated for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials, covering ISO material codes P, M, K, S, and H. The single-end, right-hand cutting and right-hand flute configuration makes it a standard choice for conventional vertical and horizontal milling centers. The submicron carbide grade and TiAlN coating make it particularly well-suited for dry or semi-dry high-speed machining where heat resistance and edge retention are priorities.

Key Features

• 0.5 inch ball nose diameter with a 0.25 inch nose radius for true ball geometry
• Four helical flutes at a 35-degree medium helix angle for efficient chip evacuation
• TiAlN PVD coating provides oxidation resistance and extended tool life at elevated cutting temperatures
• Submicron solid carbide grade delivers rigidity and wear resistance
• Single-end, right-hand cut with straight cylindrical shank for direct collet or chuck mounting
• Rated for roughing and finishing in steel, stainless, cast iron, superalloys, titanium, and hard materials

Compatibility

Designed for use on CNC milling machines and machining centers capable of accepting a 0.5 inch straight cylindrical shank. Suitable for ISO material groups P, M, K, S, and H as specified by OSG for the HP441BN series.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Secure the shank in a collet, end mill holder, or hydraulic chuck rated for the shank diameter before beginning any operation. Verify spindle direction is set to right-hand rotation to match the flute orientation. Always power down and lock out the machine before changing tooling, and confirm runout is within acceptable limits after mounting to protect both the tool and the workpiece.