Helical Solutions 81308 Corner Radius End Mill 3/4in 3 Flute Carbide

Product Description

The HELICAL SOLUTIONS 81308 is a solid carbide corner radius end mill designed for high-efficiency material removal in aluminum and non-ferrous metal applications. It features a 3/4 inch cutting diameter, 2 inch length of cut, and a 0.0300 inch corner radius that reduces edge chipping and extends tool life on contoured surfaces. The 3-flute, right-hand spiral geometry paired with a 45-degree helix angle promotes aggressive chip evacuation. A Zplus PVD coating applied via physical vapor deposition enhances lubricity and heat resistance. This tool is single-end, center-cutting, and sized on a 3/4 inch straight-cylindrical shank, making it compatible with high-precision toolholders used in CNC milling operations.

This end mill is built for roughing operations in aluminum and non-ferrous metals as its primary application, and is also rated for use in steel, stainless steel, cast iron, high temperature alloys, and hard materials as secondary workpiece materials. The Series H45AL-C-3 designation identifies it as part of a family optimized for aluminum at high spindle speeds and feed rates. Typical use scenarios include profiling, slotting, and peripheral milling on CNC machining centers in job shop, aerospace, and general metalworking environments. The chipbreaker geometry reduces cutting forces and helps manage chip load during extended roughing passes.

Key Features

• 3/4 inch cutting diameter with h6 tolerance on both mill and shank diameter
• 0.0300 inch corner radius with tolerance of -0.0020 to +0.0020 inches for consistent edge geometry
• 3-flute right-hand spiral with 45-degree high helix angle for efficient chip evacuation in aluminum
• Zplus PVD coating optimized for aluminum and non-ferrous cutting
• Center-cutting and chipbreaker-equipped for versatile roughing and entry cuts
• TIR maximum of 0.0003 inches for tight runout control in precision toolholders

Compatibility

Designed for use with high-precision toolholders in CNC milling applications. 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 H45AL-C-3.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom professional. Secure the shank fully into a high-precision toolholder to maintain runout within the specified TIR maximum. Confirm spindle is fully stopped and machine is in a safe state before changing tooling. Do not exceed the rated depth of cut for the flute length or operate without appropriate coolant strategy for the workpiece material.