Helical Solutions 59103 Corner Radius End Mill 3/8 in 3 Flute Carbide

Product Description

The HELICAL SOLUTIONS 59103 is a solid carbide corner radius end mill designed for high-performance material removal in aluminum and non-ferrous metal applications. Built to Series H35AL-3 specifications, it features a 3/8 inch diameter, a 0.0150 inch corner radius, and three flutes with a 35-degree helix angle optimized for efficient chip evacuation. The Zplus PVD coating reduces friction and extends tool life in demanding cutting environments. With a 1-1/4 inch length of cut and 3-1/2 inch overall length, this single-end centercutting tool handles both roughing and finishing passes. It is intended for use with high-precision toolholders in CNC machining operations.

This end mill is primarily suited for machining aluminum and non-ferrous metals, with secondary capability in steel, stainless steel, cast iron, high-temperature alloys, and hard materials. The coarse pitch spiral flute geometry and right-hand cutting direction make it a reliable choice for production CNC milling on vertical and horizontal machining centers where consistent surface finish and tool life are critical. The centercutting design allows plunge entry when the application requires it.

Key Features

• 0.0150 inch corner radius with a tolerance of -0.0020 to 0.0020 inches for controlled edge geometry
• Zplus PVD coating optimized for aluminum and non-ferrous metal cutting
• 3-flute, 35-degree helix spiral flute design supports both roughing and finishing operations
• Centercutting capability allows direct plunge entry into workpiece material
• Straight cylindrical shank (3/8 inch) with h6 tolerance for secure toolholder grip
• TIR maximum of 0.0003 inches for high-precision runout control

Compatibility

Designed for use with high-precision toolholders in CNC milling applications. Primary workpiece material is aluminum and non-ferrous metal; secondary compatibility includes steel, stainless steel, cast iron, high-temperature alloys, and hard materials. Part of the H35AL-3 series.

Installation Notes

Installation is performed by a qualified CNC machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before mounting or removing the tool. Seat the straight cylindrical shank fully into a high-precision toolholder and torque the retention mechanism to the toolholder manufacturer specification. Verify runout with a dial indicator before beginning cuts, as TIR directly affects surface finish and tool life.