Helical Solutions 48321 Corner Radius End Mill 3 Flute Solid Carbide

Product Description

The HELICAL SOLUTIONS 48321 is a solid carbide corner radius end mill designed for high-performance milling in both roughing and finishing operations. It features a 0.375-inch diameter with a 0.030-inch corner radius and a 1.5-inch length of cut. The 3-flute, single-end geometry uses a variable-pitch, high-helix helical flute configuration. A Zplus PVD coating improves wear resistance and surface lubricity. This tool is built for machinists and CNC operators running aluminum, non-ferrous metals, steel, stainless steel, cast iron, high-temperature alloys, and hard materials. It belongs to the H40ALV-3 series and is suited for use in high-precision toolholders.

This end mill targets production and job-shop environments where both material removal rate and surface finish quality matter in a single tool. Its primary application is non-ferrous and aluminum machining, with secondary capability across steel, stainless steel, cast iron, high-temperature alloys, and hard materials. The centercutting design allows plunge entry. The straight-cylindrical shank at 0.375 inches diameter fits standard ER collets and shrink-fit holders. The long-reach geometry at 3.5 inches overall length accommodates deeper pocket and slot work where standard-length tools cannot reach.

Key Features

• 0.030-inch corner radius reduces stress concentration at cutting edges and improves tool life in slotting and profiling
• Variable-pitch flute spacing minimizes harmonic chatter during aggressive cuts
• Zplus PVD coating provides thermal and abrasion resistance optimized for aluminum and non-ferrous applications
• Centercutting geometry enables direct plunge milling without a pre-drilled pilot hole
• Right-hand cut and right-hand flute direction compatible with standard CNC machining center spindles
• H40ALV-3 series design targets both roughing and finishing in a single tool pass

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. Series H40ALV-3.

Installation Notes

Installation and tool changes must be performed by a qualified machinist with the machine spindle fully stopped and the control in an estop or tool-change state. Confirm shank diameter tolerance class h6 compatibility with the selected toolholder bore before clamping. Torque collet nuts or set screws according to the toolholder manufacturer specifications, not the end mill manufacturer. Verify runout against the stated TIR maximum of 0.0003 inches after installation using a dial test indicator before beginning a cut cycle.