Accupro 12179350 Corner Radius End Mill 1/4 in 3 Flute

Product Description

The ACCUPRO 12179350 is a solid carbide corner radius end mill designed for precision milling operations in demanding shop environments. With a 1/4 inch diameter, a 0.01 inch corner radius, and an AlTiN coating, this tool is built for high-heat applications involving hardened steels, stainless steels, and other difficult-to-machine alloys. The three-flute, right-hand spiral geometry promotes efficient chip evacuation while maintaining a strong core. Centercutting capability allows plunge entry without a pre-drilled hole. Machinists and tool-and-die professionals reach for this end mill when tight tolerances and extended tool life are both priorities.

This end mill is suited for contouring, slotting, and profiling operations on CNC machining centers and manual mills. The 3/8 inch length of cut handles shallow-to-moderate depth passes, while the 2 inch overall length keeps the tool rigid and minimizes deflection. The 1/4 inch shank fits standard collet chucks and end mill holders common in job shops, production facilities, and toolrooms. It is a single-end tool intended for right-hand cutting with right-hand flute direction.

Key Features

• AlTiN coating provides high-temperature oxidation resistance for dry or minimal-lubricant cutting
• Micrograin solid carbide substrate delivers hardness and wear resistance across a broad range of materials
• 0.01 inch corner radius reduces stress concentration at the cutting edge and extends tool life vs. a sharp-corner end mill
• Centercutting design permits direct plunge entry
• Three-flute, right-hand spiral geometry balances chip clearance and cutting-edge strength
• Corner radius tolerance of plus or minus 0.0015 inches and mill diameter tolerance of plus 0.0002 to minus 0.0008 inches support tight-tolerance work

Compatibility

Designed as an OEM-style replacement or direct substitute for 1/4 inch shank corner radius end mills used in CNC and manual milling applications requiring a 0.01 inch radius, 3/8 inch length of cut, and AlTiN coating on solid carbide tooling.

Installation Notes

Installation is performed by qualified machinists following standard tool-holding practices. Always power down and lock out the spindle before changing tooling. Seat the 1/4 inch shank fully into the collet or end mill holder and torque the retention device per the tool holder manufacturer specification. Inspect the cutting edges and coating for chips or wear before each use, and confirm runout at the holder before committing to a finishing pass.