Harvey Tool 64478-C6 Corner Radius End Mill 0.078 in 3 Flute

Product Description

The HARVEY TOOL 64478-C6 is a solid carbide corner radius end mill designed for high-performance milling in demanding materials. With a 0.0780-inch mill diameter, a 0.0100-inch corner radius, and three flutes with a variable helix geometry, this tool is built to reduce chatter and improve surface finish in difficult-to-machine alloys. The AlTiN (PVD) coating provides elevated heat resistance, making it well-suited for dry or semi-dry cutting. The extended-reach, stub-flute configuration delivers rigidity in tight spaces while maintaining access to deep features. It is a centercutting, single-end tool with right-hand flute direction and right-hand cutting direction. Machinists and toolroom operators working with high-temp alloys and precision components will find this tool appropriate for both roughing and finishing operations.

This end mill is engineered for use with steel, stainless steel, cast iron, and hard alloys. It fits applications in aerospace, die and mold, medical device, and precision parts manufacturing where small-diameter, long-reach tooling is required. The stub flute design limits deflection during extended-reach cuts, and the variable helix construction helps manage harmonics in aggressive cutting conditions. The 1/8-inch straight cylindrical shank is compatible with standard high-precision toolholders. It is classified under the Variable Helix End Mills for High Temp Alloys - Corner Radius - Long Reach series.

Key Features

• Variable helix geometry reduces vibration and chatter during aggressive cuts in hard materials
• AlTiN PVD coating improves heat and wear resistance for high-temp alloy milling
• 0.0100-inch corner radius with tolerance of plus or minus 0.0010 inches for controlled edge geometry
• Centercutting design allows plunge entry without a pre-drilled hole
• Extended-reach, stub-flute configuration provides rigidity in deep or confined features
• Suitable for both roughing and finishing in steel, stainless steel, cast iron, and hard alloys

Compatibility

Designed for use with high-precision toolholders. Primary workpiece materials include steel, stainless steel, cast iron, and hard alloys (material codes P, M, K, H). Part of the Variable Helix End Mills for High Temp Alloys - Corner Radius - Long Reach series.

Installation Notes

Installation and tool changes must be performed by qualified machinists with the spindle fully stopped and the machine in a safe, locked-out state. Seat the shank fully into a high-precision toolholder and verify runout before cutting. Consult the machine tool manufacturer and toolholder specifications for proper clamping torque and retention. Follow your facility and equipment safety standards when handling carbide tooling.