Accupro 12179358 Corner Radius End Mill 3/4 in 3 Flute Altin

Product Description

The ACCUPRO 12179358 is a solid carbide corner radius end mill designed for precision milling in demanding machining environments. Built from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride), this tool handles high-heat applications and abrasive workpiece materials with consistent edge retention. It features a 3/4 inch cutting diameter, a 1 inch length of cut, and a 0.03 inch corner radius that reduces stress concentrations at part transitions. With 3 right-hand spiral flutes and a 40-degree helix angle, it delivers efficient chip evacuation and smooth cutting action. This is a single-end, centercutting tool capable of plunge entry and multi-directional cutting paths.

This end mill is suited for production and job-shop milling operations where corner radius profiles are required on steel, stainless, cast iron, and high-temperature alloys. The AlTiN coating makes it a strong choice for dry or semi-dry cutting conditions where heat resistance is critical. It fits standard 3/4 inch collets and toolholders, making it a straightforward drop-in for CNC machining centers and manual knee mills running right-hand spindle rotation.

Key Features

• Micrograin solid carbide substrate for enhanced rigidity and wear resistance
• AlTiN coating provides high-temperature oxidation resistance for dry and hard milling
• 0.03 inch corner radius reduces chipping at part edges and extends tool life
• 40-degree helix angle promotes efficient chip evacuation and reduced cutting forces
• Centercutting design allows direct plunge entry without pre-drilling
• Right-hand flute direction and cutting geometry compatible with standard CNC spindle rotation

Compatibility

Designed as a direct-fit replacement for 3/4 inch shank corner radius end mill applications in CNC machining centers and manual mills using standard ER, CAT, BT, or similar 3/4 inch toolholding systems.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully stopped and the machine is in an e-stop or powered-down state before changing tooling. Secure the shank to the full recommended grip depth in the toolholder and verify runout with a dial indicator before first use. Follow the tool manufacturer and machine builder guidelines for feeds, speeds, and coolant strategy appropriate to the workpiece material.