Helical Solutions 46371 Corner Radius End Mill 1/2 in 3 Flute

Product Description

The HELICAL SOLUTIONS 46371 is a solid carbide corner radius end mill designed for high-performance milling in both roughing and finishing operations. It features a 0.5000 inch mill diameter, a 0.6250 inch length of cut, and a 0.0300 inch corner radius that reduces stress concentration at the cutting edge. The three-flute geometry is paired with a variable pitch design and a high helix angle of 40 degrees, promoting chip evacuation and reducing chatter. A Zplus PVD coating extends tool life and improves performance in aluminum and non-ferrous metal applications. The straight cylindrical shank measures 0.5000 inch in diameter, and the overall length is 5.0000 inches. Licensed machinists and CNC tooling professionals install this end mill in high-precision toolholders.

This end mill is engineered primarily for aluminum and non-ferrous metals, with secondary capability in steel, stainless steel, cast iron, high temperature alloys, and hard materials. The H40ALV-RN-3 series is classified as a long-length, extended-reach design, with a reach length of 3.3750 inches and a reduced neck diameter of 0.4750 inch that provides clearance in deep-pocket and slotting operations. The centercutting geometry allows plunge entry. It is suited for CNC machining centers running high-speed operations where tight tolerances and surface finish quality are required.

Key Features

• 0.0300 inch corner radius with tolerance of -0.0020 to 0.0020 inch reduces edge chipping on workpiece corners
• Variable pitch flute spacing minimizes harmonic chatter during aggressive cuts
• 40-degree high helix angle promotes efficient chip evacuation in aluminum and non-ferrous materials
• Zplus PVD coating provides wear resistance and thermal protection
• Extended reach of 3.3750 inches with 0.4750 inch neck clearance enables deep-pocket milling
• Centercutting design permits direct plunge entry without pilot drilling
• Maximum TIR of 0.0003 inch supports high-precision toolholder applications

Compatibility

Designed for use with high-precision toolholders. Primary workpiece material is aluminum and non-ferrous metal. Secondary workpiece materials include steel, stainless steel, cast iron, high temperature alloys, and hard materials. Part of the H40ALV-RN-3 series.

Installation Notes

Install this end mill in a high-precision toolholder, such as a shrink-fit or hydraulic chuck, to stay within the 0.0003 inch maximum TIR specification. Ensure the machine spindle and toolholder are clean and free of debris before seating the shank. Verify programmed feed rates and speeds against the workpiece material before initiating the cut. Handle solid carbide tooling carefully to avoid edge chipping from contact with hard surfaces during loading and unloading.