Accupro 12183328 Corner Radius End Mill 1/2 in 4 Flute

Product Description

The ACCUPRO 12183328 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. It features a 1/2 inch diameter with a 0.02 inch corner radius, four flutes, and an AlTiN coating that improves heat resistance and tool life during high-speed cutting. The extra-long configuration delivers a 3 inch length of cut and a 6 inch overall length, giving machinists extended reach for deep-cavity and shoulder milling operations. The micrograin carbide substrate supports tighter tolerances and harder workpiece materials. This tool is installed and operated by CNC machinists and tool-and-die professionals in production and job-shop environments.

This end mill is suited for milling ferrous metals, hardened steels, and high-temperature alloys where conventional coatings fall short. The single-end, centercutting design allows plunge entry as well as peripheral and slot cuts. The extra-long flute length makes it appropriate for deep-pocket work, tall workpiece profiles, and applications where a standard-length end mill cannot reach. Right-hand cutting and right-hand spiral flute direction are standard for conventional CNC vertical and horizontal machining center setups.

Key Features

• AlTiN coating provides oxidation resistance and extends tool life in dry and semi-dry cutting of ferrous materials
• Micrograin solid carbide substrate supports tight mill diameter tolerance of +0.000000 to -0.002500 inches
• 0.02 inch corner radius reduces stress concentration at the cutting edge and improves surface finish at part edges
• Extra-long 3 inch length of cut (6 inch OAL) enables deep-cavity and extended-reach milling
• Centercutting geometry allows direct plunge entry without a pre-drilled hole
• Four-flute, right-hand spiral design balances chip evacuation with surface finish quality

Compatibility

Designed as a direct-fit tooling option for CNC machining centers and manual mills accepting a 1/2 inch straight shank in standard ER, side-lock, or shrink-fit toolholders.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the shank to the full recommended engagement depth in the toolholder and torque the retention mechanism per the toolholder manufacturer specifications. Confirm runout with a dial indicator before beginning a cut, as excessive runout accelerates edge wear and can cause premature tool failure.