Accupro 12182728 Corner Radius End Mill 1/8 in 4 Flute

Product Description

The ACCUPRO 12182728 is a solid carbide corner radius end mill designed for precision milling operations in metal and composite materials. It features a 1/8 inch diameter with a 0.03 inch corner radius, a 40-degree helix angle, and a TiCN coating that extends tool life in ferrous and non-ferrous applications. With 4 flutes and a right-hand spiral flute geometry, this end mill delivers efficient chip evacuation and smooth surface finishes. The single-end, centercutting design allows it to plunge directly into a workpiece. Machinists and tool-and-die professionals use this mill for profiling, slotting, and finishing passes on CNC machining centers and manual mills.

This end mill suits stub-length applications where rigidity and minimal deflection are priorities. The 1/4 inch length of cut and 1-1/2 inch overall length make it appropriate for shallow pocket milling, contouring, and corner blending on hardened steel, stainless, titanium, and similar materials. The micrograin carbide substrate supports higher surface speeds and feeds compared to standard carbide grades. It is sold as a single unit and is a direct fit for 1/8 inch collets or shrink-fit toolholders.

Key Features

• Solid micrograin carbide construction for high rigidity and wear resistance
• TiCN coating reduces friction and extends tool life in ferrous applications
• 40-degree helix angle promotes efficient chip evacuation and smooth finish
• Centercutting design permits direct plunge entry into the workpiece
• 4-flute, right-hand spiral geometry for balanced cutting forces
• Tight mill diameter tolerance of +0.000000 to -0.002500 inches ensures dimensional accuracy

Compatibility

Designed as an OEM-style replacement or direct-use end mill compatible with any CNC or manual milling setup using a 1/8 inch collet, shrink-fit, or hydraulic toolholder.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the collet or toolholder to the recommended engagement depth before torquing the retention mechanism. Verify runout with a dial indicator after installation, especially for fine-finish or tight-tolerance operations.