Harvey Tool 980230-C3 Corner Radius End Mill 1/8 in 4 Flute

Product Description

The HARVEY TOOL 980230-C3 is a miniature solid carbide corner radius end mill designed for precision milling in demanding materials including steel, stainless steel, cast iron, and non-ferrous metals. It carries a 0.030 inch corner radius and a 1/8 inch diameter with four flutes ground for right-hand cutting and right-hand flute direction. The AlTiN PVD coating extends tool life in high-heat applications. At 1.5 inches overall length with a 3/16 inch length of cut, this is a stub-length geometry built for rigidity and reduced deflection in tight-tolerance work.

This end mill is suited for CNC machining centers and milling machines running miniature or small-feature work in production and toolroom environments. The centercutting design allows plunge entry. The stub length type makes it particularly effective in setups where overhang must be minimized to maintain dimensional accuracy. It is compatible with standard straight-cylindrical toolholders accepting a 1/8 inch shank. Machinists working on mold cavities, medical components, and precision aerospace parts are the primary users of this tool geometry.

Key Features

• 0.030 inch corner radius with a tight tolerance of plus or minus 0.001 inch
• AlTiN PVD coating for heat resistance and extended tool life in ferrous and composite materials
• Four-flute spiral geometry supports both roughing and finishing in a single tool
• Centercutting capability allows direct plunge milling without a pre-drilled entry point
• Stub length design maximizes rigidity and minimizes deflection on small-diameter cuts
• 30 degree helix angle promotes smooth chip evacuation and surface finish quality

Compatibility

Designed for use with standard straight-cylindrical toolholders accepting a 1/8 inch shank diameter. Suitable for milling steel, stainless steel, cast iron, non-ferrous metal, and composite workpiece materials.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a locked-out state. Ensure the toolholder bore and shank are clean and free of debris before seating the tool. Verify runout at the tool tip after clamping, as runout directly affects corner radius accuracy and tool life on miniature-diameter end mills. Consult the machine tool manufacturer and applicable shop safety standards for proper clamping torque and RPM limits for this shank diameter.