Helical Solutions 88572 Corner Radius End Mill 0.5in 4 Flute

Product Description

The HELICAL SOLUTIONS 88572 is a solid carbide corner radius end mill engineered for steel machining applications. It features a 0.5 inch diameter, a 0.625 inch length of cut, and a 0.020 inch corner radius that reduces stress concentration at the cutting edge and extends tool life in ferrous materials. The four-flute, variable pitch (variable index) design helps dampen harmonic vibration during aggressive cuts. An APLUS coating improves lubricity and heat resistance. With an overall length of 6 inches and a 3.75 inch extended reach, this end mill handles deep-pocket and long-reach milling operations that standard-length tools cannot reach. It is intended for use by machinists and CNC operators working in production or job-shop environments.

This end mill is part of the Helical Solutions Steels series, purpose-built for milling carbon steels, alloy steels, and similar ferrous materials. The reduced neck geometry supports extended reach into deep pockets or cavities while maintaining rigidity. The 35-degree helix angle, right-hand flute direction, and right-hand cutting direction are standard for conventional CNC vertical and horizontal milling setups. The straight cylindrical shank with a 0.5 inch diameter seats directly in standard ER collet chucks, end mill holders, or shrink-fit toolholders without adapters.

Key Features

• 0.020 inch corner radius reduces edge chipping and extends tool life on steel workpieces
• Variable pitch (variable index) flute spacing dampens vibration and chatter during high-feed passes
• APLUS coating provides enhanced lubricity and thermal resistance for steel milling
• Reduced neck profile enables extended reach up to 3.75 inches into deep pockets
• Solid carbide construction maintains rigidity and dimensional accuracy at elevated cutting speeds
• Centercutting capability allows plunge entry without a pre-drilled pilot hole

Compatibility

Designed as an OEM-style replacement or direct-use tool for CNC milling operations targeting steel workpieces. Fits standard 0.5 inch ER collet chucks, end mill holders, and shrink-fit toolholding systems. No specific machine model compatibility was stated in the product data.

Installation Notes

Installation and tool changes must be performed with the spindle fully stopped and machine power locked out per shop safety procedures. Seat the straight cylindrical shank fully into the toolholder and torque the retention nut to the toolholder manufacturer's specification — do not use an estimated value. Confirm runout at the cutting diameter with a dial indicator before beginning a production run, as excessive runout accelerates corner radius wear. Tool selection, speeds, and feeds should follow HELICAL SOLUTIONS published data for the 88572 and the specific workpiece material grade.