Accupro 12179673 Corner Radius End Mill 5/16 in 3 Flute Ticn

Product Description

The ACCUPRO 12179673 is a single-end, centercutting corner radius end mill ground from micrograin solid carbide and finished with a TiCN (Titanium Carbonitride) coating. It measures 5/16 inches in diameter with a 0.02-inch corner radius, a 13/16-inch length of cut, and a 2-1/2-inch overall length. The 35-degree right-hand helix and three-flute spiral geometry support efficient chip evacuation and smooth cutting action. This tool is suited for machinists and CNC operators working in production or job-shop environments requiring consistent edge geometry and tight tolerances on ferrous and non-ferrous workpiece materials.

This end mill is designed for milling operations that require a controlled corner radius to reduce stress concentrations at part features. The centercutting design allows plunge entry, making it useful for ramping, pocketing, and contour milling. The TiCN coating increases surface hardness and wear resistance compared to uncoated carbide, extending tool life in abrasive or harder materials. The 5/16-inch shank diameter matches the cutting diameter, allowing use in standard 5/16-inch collets or shrink-fit toolholders common in CNC machining centers and manual knee mills.

Key Features

• Micrograin solid carbide substrate for rigidity and edge retention
• TiCN coating for improved wear resistance and reduced heat buildup
• 0.02-inch corner radius reduces stress risers at milled features
• Centercutting geometry allows direct plunge entry
• 35-degree right-hand helix spiral flutes for efficient chip evacuation
• Mill diameter tolerance of +0.000000 to -0.002000 inches for consistent fit

Compatibility

Designed as an OEM-style replacement or standard tooling option for CNC machining centers and manual mills accepting a 5/16-inch shank collet or toolholder with right-hand cutting direction.

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 seating or removing the tool from the collet or toolholder. Verify runout with a dial indicator after clamping to confirm concentricity before cutting. Do not exceed the tool manufacturer's recommended feed and speed parameters for the workpiece material and coating type.