Harvey Tool 889062-C3 Corner Radius End Mill 0.062in 4F

Product Description

The HARVEY TOOL 889062-C3 is a miniature corner radius end mill designed for high-precision finishing operations in demanding materials. Built from solid carbide and coated with AlTiN via PVD process, it delivers heat and wear resistance in steel, stainless steel, cast iron, and non-ferrous metals. The tool features a 0.062 inch mill diameter, a 0.5 mm (0.020 inch) corner radius, and a 4-flute helical geometry with right-hand cutting and flute direction. The extra-long flute configuration - with a 0.5625 inch length of cut and 2.5 inch overall length - extends reach into deep pockets and slots where standard-length tooling cannot access. Single-end, center-cutting design enables plunge entry.

This end mill is suited to precision finishing work in mold and die, aerospace, and medical component machining where small-diameter tooling with extended reach is required. The corner radius geometry reduces stress concentration at the cutting edge, extending tool life compared to sharp-corner end mills. Its 1/8 inch straight-cylindrical shank seats in standard collets and toolholders. The miniature long-flute series targets applications in steel, stainless steel, cast iron, composites, and non-ferrous metals where tight tolerances and fine surface finish are the primary objectives.

Key Features

• Solid carbide construction with AlTiN PVD coating for extended tool life in ferrous and non-ferrous materials
• 0.5 mm (0.020 inch) corner radius reduces edge chipping and stress concentration in finishing cuts
• Extra-long flute design: 0.5625 inch length of cut on a 2.5 inch OAL for deep-pocket reach
• 4-flute helical geometry with right-hand cut and right-hand flute for improved chip evacuation and surface finish
• Center-cutting capability allows direct plunge entry without pre-drilled lead hole
• Normal pitch, no chipbreaker, no variable helix - optimized for consistent finishing passes

Compatibility

Designed for use with standard collet toolholders accepting a 1/8 inch straight-cylindrical shank. Suitable for machining steel, stainless steel, cast iron, non-ferrous metals, and composites as noted in the product specifications.

Installation Notes

Installation is performed by qualified machinists on CNC milling equipment. Power down and lock out the spindle before seating or removing the tool from the toolholder. Ensure the shank is fully seated and the collet nut is torqued per toolholder manufacturer guidelines. Verify runout with a dial indicator before beginning finish passes, as miniature-diameter tooling is sensitive to any collet or spindle eccentricity.