Helical Solutions 82172 Corner Radius End Mill 3/8 in 3 Flute

Product Description

The HELICAL SOLUTIONS 82172 is a solid carbide corner radius end mill designed for high-performance material removal in aluminum and non-ferrous metal applications. It features a 3/8-inch cutting diameter, a 0.0300-inch corner radius, and three flutes arranged in a variable-pitch, right-hand spiral configuration. The Zplus PVD coating provides surface hardness suited for sustained cutting in non-ferrous materials. With an overall length of 4 inches and a 1/2-inch length of cut, this is a single-end, center-cutting tool built for extended-reach operations. It is installed by machinists and CNC tool setters working in production and job-shop environments.

This end mill is rated primarily for aluminum and non-ferrous metals, with secondary capability in steel, stainless steel, cast iron, high-temperature alloys, and hard materials. It belongs to the H35ALV-C-RN-3 series, which is engineered for use in high-precision toolholders. The extended reach design, 1-5/8-inch reach length, and reduced neck diameter of 0.3560 inches make it suited for deep-pocket and tight-clearance milling operations where standard-reach tools cannot perform adequately.

Key Features

• Zplus PVD coating optimized for aluminum and non-ferrous metal cutting
• Variable-pitch flute geometry reduces harmonic chatter during aggressive cuts
• Center-cutting design allows plunge entry without pre-drilled pilot holes
• Extended reach with 1-5/8-inch reach length and reduced 0.3560-inch neck diameter for deep-pocket access
• Chipbreaker geometry assists chip evacuation in gummy or stringy non-ferrous materials
• Corner radius tolerance held to plus or minus 0.0020 inches for repeatable edge profiles

Compatibility

Designed for use with high-precision toolholders as specified by HELICAL SOLUTIONS for the H35ALV-C-RN-3 series. Primary workpiece materials are aluminum and non-ferrous metals; secondary workpiece materials include steel, stainless steel, cast iron, high-temperature alloys, and hard materials.

Installation Notes

Installation is performed by a machinist or CNC setup technician using a high-precision toolholder rated for the 3/8-inch straight-cylindrical shank. Confirm runout does not exceed the 0.0003-inch maximum TIR specification before cutting. Machine spindle and all axes must be fully stopped and the control placed in a safe state before tool changes. Do not exceed the recommended depth-of-cut or feed parameters established for the workpiece material and machine tool combination.