Accupro 12181409 Corner Radius End Mill 3/8 in 2 Flute Carbide

Product Description

The ACCUPRO 12181409 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. It features a 3/8-inch mill diameter, a 7/8-inch length of cut, and a 0.03-inch corner radius that reduces stress concentration at the cutting edge. With 2 flutes and a right-hand spiral flute direction, it delivers efficient chip evacuation and a clean finish in ferrous and non-ferrous materials. The bright/uncoated finish makes it suitable for applications where coating is not required or where re-sharpening is anticipated. Machinists and CNC operators install this tool in standard end mill holders and collet chucks.

This end mill is suited for use in vertical machining centers, CNC mills, and manual knee mills across job shop and production environments. It is a single-end, centercutting design, meaning it can plunge directly into the workpiece as well as perform peripheral and slot cuts. The 3/8-inch shank diameter fits common ER and straight-bore collet systems. The 0.03-inch corner radius is appropriate for finishing passes and light profiling where sharp inside corners are not required by the print.

Key Features

• Solid carbide micrograin construction for rigidity and wear resistance
• 0.03-inch corner radius reduces edge chipping and workpiece stress risers
• 2-flute geometry with right-hand spiral for efficient chip evacuation
• Centercutting design allows direct plunge entry into material
• Bright/uncoated finish compatible with a wide range of cutting fluids and materials
• Single-end configuration with 2.5-inch overall length and 3/8-inch shank

Compatibility

Designed as a standard 3/8-inch shank end mill for use in ER collet chucks, straight-bore tool holders, and similar end mill holding systems commonly found on CNC and manual milling machines.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool holder is clean and free of chips or debris before seating the tool. Torque the collet or set screw to the tool holder manufacturer specification. Verify runout with a dial indicator before beginning the cut, as excessive runout accelerates wear on carbide tooling.