Accupro 12181332 Corner Radius End Mill 1/4 in 2 Flute Carbide

Product Description

The ACCUPRO 12181332 is a single-end corner radius end mill designed for precision milling operations in metal, composites, and similar materials. It features a 1/4 inch mill diameter with a 0.02 inch corner radius that reduces stress concentrations at the cutting edge and produces a consistent fillet in slotted or profiled cuts. The flute length (length of cut) is 3/4 inch, and the overall length is 2-1/2 inches. The tool is manufactured from micrograin solid carbide, which delivers rigidity and edge retention well beyond what high-speed steel tooling can provide. This end mill is centercutting, allowing plunge entry into the workpiece. It ships in a bright, uncoated finish suitable for a wide range of general-purpose milling applications.

This tool is appropriate for use on CNC machining centers and manual knee mills where a corner radius profile is required to meet part geometry or to prevent stress risers in a workpiece. The right-hand cutting direction and right-hand spiral flute geometry make it compatible with standard spindle rotation. Machinists and toolmakers running general-purpose jobs in steel, aluminum, and engineered plastics will find this a straightforward drop-in for finishing passes, profiling, and shallow slotting operations requiring a 0.02 inch radius at the corner.

Key Features

• Micrograin solid carbide construction for superior edge retention and rigidity
• 0.02 inch corner radius reduces edge chipping and produces consistent fillets
• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• Right-hand cut, right-hand spiral flute for use with standard CNC and manual spindle rotation
• Bright/uncoated finish suitable for general-purpose milling across a broad range of materials
• 2-flute geometry provides good chip clearance in slotting and profiling applications

Compatibility

Designed for use in standard 1/4 inch collets, end mill holders, or shrink-fit toolholders on CNC machining centers and manual milling machines. No specific OEM equipment compatibility was stated by the manufacturer for this part number.

Installation Notes

This end mill is installed by a machinist or toolmaker into a 1/4 inch collet or end mill holder; ensure the holder is clean and free of runout before tightening. Power down and lock out the machine spindle before inserting or removing tooling. Verify tool projection and reach before beginning a cut, and confirm that the corner radius tolerance of plus or minus 0.0015 inch meets the part drawing requirements. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material.