Accupro 12181551 Corner Radius End Mill 3/4in 2 Flute Altin

Product Description

The ACCUPRO 12181551 is a single-end corner radius end mill manufactured from micrograin solid carbide and coated with AlTiN (aluminum titanium nitride) for extended tool life in demanding cutting environments. It features a 3/4 inch diameter, a 1.75 inch length of cut, and a 0.015 inch corner radius that reduces stress concentration at the cutting edge. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. This tool is centercutting, allowing plunge operations, and runs in a right-hand cutting direction with right-hand flute spiral geometry. Intended for use by machinists and tooling professionals in production and job-shop environments.

This end mill is suited for milling operations where a radiused corner profile is required to reduce part stress risers or match a design callout. Typical applications include finishing passes in mold and die work, aerospace component machining, and general precision part manufacturing in ferrous and non-ferrous alloys. The AlTiN coating provides thermal resistance that makes it appropriate for dry or semi-dry cutting in harder materials. The 3/4 inch shank diameter fits standard ER and end mill holders with 3/4 inch bore collets or set-screw holders.

Key Features

• Micrograin solid carbide construction for rigidity and edge retention
• AlTiN coating for high-temperature wear resistance in ferrous materials
• 0.015 inch corner radius reduces edge chipping and part stress concentration
• 40-degree helix angle for efficient chip evacuation and reduced cutting forces
• Centercutting design allows direct plunge entry into workpiece
• Right-hand cut, right-hand spiral, single-end configuration

Compatibility

Designed as a direct-fit replacement for 3/4 inch bore end mill holders, ER collet chucks, and set-screw style tool holders accepting a 3/4 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following machine tool manufacturer guidelines. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the shank to the minimum recommended insertion depth per holder specifications and verify runout with a dial indicator before commencing cuts. Do not exceed the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.