Accupro 12180409 Corner Rounding End Mill 1/2 in 4 Flute

Product Description

The ACCUPRO 12180409 is a double-end corner rounding end mill designed for precision edge profiling on metal workpieces. Built from solid carbide and coated with TiCN (Titanium Carbonitride), it delivers wear resistance and extended tool life in demanding machining environments. The 0.156-inch corner radius and 0.500-inch mill diameter produce consistent, repeatable radius profiles. With four flutes and right-hand cutting and flute direction, it generates clean chip evacuation at higher feed rates. The double-end configuration effectively doubles usable tool life before replacement. Machinists and CNC operators in job shops, aerospace, and general manufacturing use this tool for rounding sharp edges on ferrous and non-ferrous components.

This corner rounding end mill is suited for milling operations where a precise 0.156-inch radius edge break or full corner profile is required. It fits standard 1/2-inch collets and tool holders, making it compatible with vertical machining centers, CNC mills, and manual knee mills. The 3-inch overall length provides sufficient reach for most standard workholding setups without sacrificing rigidity. It performs well on steel, stainless steel, cast iron, and similar materials where TiCN coatings provide a thermal and abrasion barrier.

Key Features

• Solid carbide construction for rigidity and heat resistance in high-speed cutting
• TiCN coating extends tool life and reduces built-up edge on ferrous materials
• Double-end design provides two usable cutting ends per tool
• 0.156-inch corner radius for consistent edge profiling
• 4 right-hand flutes promote efficient chip removal at elevated feed rates
• 1/2-inch shank diameter fits common collet chucks and end mill holders

Compatibility

Designed for use in standard 1/2-inch end mill holders and collet systems on CNC and manual milling machines performing corner rounding operations on metal components.

Installation Notes

Installation should be performed by a qualified machinist. Ensure the machine spindle is fully stopped and locked out before loading or changing tooling. Seat the shank fully into the collet or tool holder to the recommended gauge length before tightening. Verify runout with a dial indicator before beginning a production run, as excessive runout will accelerate tool wear and degrade radius accuracy.