Helical Solutions 81490 Corner Radius End Mill 1/4 in

Product Description

The HELICAL SOLUTIONS 81490 is a solid carbide corner radius end mill designed for high-performance milling in both roughing and finishing operations. It features a 1/4-inch diameter, a 0.0150-inch corner radius, and three flutes arranged in a variable-pitch, high-helix configuration. The cutting geometry is single-end and centercutting, allowing plunge entry. A Zplus PVD coating is applied to extend tool life and reduce built-up edge when cutting aluminum and non-ferrous metals. The extended-reach design, with a 1-5/8-inch reach length and a reduced neck diameter of 0.2370 inches, allows access in deep-pocket or contoured workpiece features. This tool is intended for use with high-precision toolholders.

This end mill is optimized for aluminum and non-ferrous metals as its primary workpiece material, with secondary capability in steel, stainless steel, cast iron, high-temperature alloys, and hard materials. It belongs to the H40ALV-RN-3 series and is suited for CNC machining centers in precision shop environments where tight tolerances and clean finishes are required. The variable pitch and right-hand spiral flute design help reduce chatter and harmonic vibration during aggressive cuts. It is packaged individually and sold as a single unit.

Key Features

• Solid carbide construction for rigidity and wear resistance
• Zplus PVD coating optimized for aluminum and non-ferrous metal cutting
• Variable-pitch flutes reduce chatter and vibration during high-speed cuts
• Corner radius of 0.0150 inches strengthens the cutting edge and improves surface finish at transitions
• Extended-reach design with 1-5/8-inch reach and reduced 0.2370-inch neck diameter for deep-pocket access
• Centercutting geometry allows direct plunge entry into workpiece material

Compatibility

Designed for use with high-precision toolholders. Part of the H40ALV-RN-3 series. Suitable for CNC milling applications in aluminum, non-ferrous metals, steel, stainless steel, cast iron, high-temperature alloys, and hard materials.

Installation Notes

Installation is performed by machining professionals in CNC shop environments. Secure the shank in a high-precision toolholder rated for the spindle speed and cutting load of the application. Verify runout does not exceed the stated maximum TIR before beginning a cut. Inspect the cutting edges for chips or wear before each use and replace when edge condition degrades.