Accupro 12183299 Corner Radius End Mill 3/8 in 4 Flute Altin

Product Description

The ACCUPRO 12183299 is a solid carbide corner radius end mill designed for high-performance milling operations in metalworking and machining applications. It features a 3/8 inch diameter with a 0.03 inch corner radius, a 1-3/4 inch length of cut, and a 4 inch overall length. The 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces. Finished with an AlTiN (aluminum titanium nitride) coating, it handles elevated cutting temperatures and extends tool life in ferrous and hardened materials. With 4 flutes and a right-hand spiral flute direction, this tool is suited for demanding finishing and semi-finishing passes in production environments.

This end mill is intended for use in CNC machining centers and manual milling machines where a corner radius profile is required to reduce stress concentrations at part corners and improve surface finish. The extra-long length type makes it appropriate for applications requiring additional reach into deep pockets or tall workpiece features. It is centercutting, allowing plunge entry into the workpiece. Machinists, tool-and-die makers, and CNC operators in job shops and production facilities are the primary users of this tool.

Key Features

• Solid carbide micrograin construction for rigidity and wear resistance
• AlTiN coating extends tool life in high-temperature cutting conditions
• 0.03 inch corner radius reduces stress risers and improves part surface finish
• 40-degree helix angle promotes smooth cutting action and effective chip removal
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Extra-long length type provides additional reach for deep pocket milling
• Single-end, right-hand cut configuration for standard CNC and manual mill use

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for CNC machining centers and manual milling machines accepting a 3/8 inch straight shank.

Installation Notes

This tool is installed by a machinist or CNC operator using a compatible collet, end mill holder, or hydraulic chuck rated for a 3/8 inch shank diameter. Ensure the machine spindle and tool holder are clean and free of debris before seating the shank to full depth. Verify spindle speed and feed rate parameters are appropriate for the workpiece material and tool diameter before initiating a cut. Do not exceed the rated length of cut or apply side loads beyond the tool's design limits, as this can cause premature breakage.