Sandvik Coromant 8038704 Corner Radius End Mill 1/2 in

Product Description

The SANDVIK COROMANT 8038704 is a solid carbide corner radius end mill designed for high-performance milling in demanding machining applications. Built to CoroMill Dura series standards, this single-end, centercutting tool features a 1/2 inch diameter, a 0.0150 inch corner radius, and three flutes with a variable helix and variable index geometry. The ZrN (zirconium nitride) coating improves wear resistance and surface finish on non-ferrous and mixed-material workpieces. With a 35-degree helix angle and right-hand cutting direction, this end mill is suited for machinists who need consistent edge performance and reduced chatter in finish and semi-finish passes.

This end mill is intended for use in CNC machining centers and manual mills where tight corner radii and high surface quality are required. The CoroMill Dura series targets material grade N1BZ applications, making it well suited for aluminum alloys and other non-ferrous materials. The centercutting design allows plunge entry, giving the machinist flexibility in toolpath strategy. It is a standard choice for tool-and-die, aerospace component, and general precision machining environments where solid carbide rigidity is essential.

Key Features

• Solid carbide construction for rigidity and long tool life in non-ferrous applications
• ZrN coating for enhanced wear resistance and reduced built-up edge on aluminum and similar materials
• Variable helix and variable index geometry to reduce harmonic vibration and chatter
• Centercutting design allows direct plunge entry without a pre-drilled hole
• 0.0150 inch corner radius breaks sharp edges and improves workpiece surface finish
• Right-hand flute direction with spiral flute type for efficient chip evacuation

Compatibility

Designed as an OEM-style solid carbide corner radius end mill for use in standard 1/2 inch straight-cylindrical shank toolholders, collet chucks, and shrink-fit holders compatible with 1/2 inch shank diameters. Part of the SANDVIK COROMANT CoroMill Dura series; material grade N1BZ.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a locked-out state per facility lockout/tagout procedures. Ensure the toolholder bore is clean and free of debris before seating the shank. Torque the collet or set screw to the toolholder manufacturer's specification. Verify runout with a dial indicator after clamping before beginning a cut.