Helical Solutions 82164 Corner Radius End Mill 1/4 in 3 Flute

Product Description

The HELICAL SOLUTIONS 82164 is a solid carbide corner radius end mill designed for precision material removal in demanding machining applications. Built on the H35ALV-C-RN-3 series, it features a 1/4 inch diameter, a 0.0100 inch corner radius, and a 3/8 inch length of cut. The Zplus PVD coating enhances wear resistance and surface performance across a range of workpiece materials. With a 4 inch overall length and 1-5/8 inch reach, this end mill suits deep-pocket and extended-reach setups. It is centercutting, right-hand cutting, and right-hand fluted, making it suitable for a variety of milling strategies performed by machinists and CNC operators in production and job shop environments.

This end mill is optimized for aluminum and non-ferrous metals as its primary workpiece materials, with secondary suitability for steel, stainless steel, cast iron, high temperature alloys, and hard materials. The variable pitch geometry helps reduce harmonic chatter during aggressive roughing passes. It is intended for use with high-precision toolholders to maintain TIR within specification. Typical applications include profile milling, slotting, and extended-reach pocket work where corner edge integrity is critical to final part dimensions.

Key Features

• Solid carbide construction with Zplus PVD coating for extended tool life across ferrous and non-ferrous materials
• 0.0100 inch corner radius with a tight tolerance of -0.0020 to 0.0020 inches for accurate edge geometry
• Variable pitch, 3-flute design reduces chatter during roughing operations
• Extended reach of 1-5/8 inches and 4 inch OAL for deep-pocket and long-reach applications
• Centercutting capability allows plunge entry without a pre-drilled pilot hole
• Neck diameter of 0.2370 inches provides clearance relief behind the cutting zone in extended-reach setups

Compatibility

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

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the toolholder is clean and free of debris before seating the shank to maintain runout within the 0.0003 inch TIR maximum specification. Confirm spindle speed, feed rate, and depth of cut are set per the applicable machining parameters for the workpiece material before beginning the cut. Do not exceed the rated reach length when applying lateral cutting forces.