Osg HP455-2188 Square End Mill 7/32 in 5 Flute Carbide

Product Description

The OSG HP455-2188 is a solid carbide square end mill from the HP455 series, designed for high-performance milling in ferrous and hardened materials. It features a 7/32 inch (0.2188 inch) cutting diameter, a 5/8 inch length of cut, and a 1/4 inch shank diameter. The five-flute geometry combined with a 45-degree helix angle supports efficient chip evacuation and smooth surface finishes at higher feed rates. A TiAlN coating adds thermal resistance and extends tool life in demanding cutting environments. This end mill is centercutting, enabling plunge entry, and runs right-hand cut with right-hand spiral flutes.

The HP455-2188 is suited for precision machining operations including slotting, profiling, and peripheral milling on CNC machining centers and manual mills. Its regular-length geometry and 2-1/2 inch overall length make it a practical choice for general-purpose work in tool rooms, production shops, and maintenance environments where a compact, rigid end mill is required. Machinists working in aerospace, die and mold, and general metal fabrication will find the five-flute design advantageous for finish passes and higher-speed applications.

Key Features

• Solid carbide construction for rigidity and wear resistance
• Five-flute design supports higher feed rates and improved surface finish
• 45-degree helix angle for efficient chip evacuation
• TiAlN coating for thermal resistance in ferrous and hardened material cutting
• Centercutting capable - allows direct plunge entry
• Right-hand cut, right-hand spiral flute configuration

Compatibility

Designed as an OEM-style solid carbide square end mill in the OSG HP455 series for use in standard 1/4 inch collet or end mill holder tooling systems on CNC and manual milling machines.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the end mill. Torque the collet nut or set screw to the tool holder manufacturer's specification. Confirm runout with a dial indicator before commencing cuts, and verify feeds and speeds are appropriate for the workpiece material and coating type.