Accupro 12183645 Corner Radius End Mill 1/4 in 4 Flute

Product Description

The ACCUPRO 12183645 is a solid carbide corner radius end mill designed for precision milling operations where edge durability and profile accuracy are critical. The cutting diameter is 0.25 inches with a 0.01 inch corner radius and a 1.5 inch length of cut. The tool features a TiCN (Titanium Carbonitride) coating that improves wear resistance and extends tool life in abrasive materials. At 6 inches overall length, this is an extra-long configuration suited for deep-reach applications. Machining professionals and tool-and-die shops rely on this geometry for contouring, slotting, and finishing passes where a sharp corner would chip or fail prematurely.

This end mill is used in CNC machining centers for ferrous and non-ferrous materials where a corner radius is required to reduce stress concentration in milled features. The extra-long reach makes it well suited for deep pockets, mold cavities, and tall workpiece setups. The centercutting design allows plunge entry directly into the workpiece. Right-hand flute direction and right-hand cutting orientation are standard for conventional vertical and horizontal machining center spindles.

Key Features

• 0.01 inch corner radius reduces edge chipping and improves surface finish at milled corners
• TiCN coating provides enhanced hardness and wear resistance versus uncoated carbide
• Micrograin solid carbide substrate supports high cutting speeds and tight tolerances
• 4-flute spiral configuration balances chip evacuation with surface finish quality
• Centercutting capability allows direct plunge milling without pre-drilling
• Extra-long 6 inch OAL enables deep-reach applications in tall fixtures or deep cavities

Compatibility

Designed as a standard 1/4 inch shank end mill compatible with ER collets, end mill holders, and shrink-fit toolholders accepting 1/4 inch shank tooling on CNC machining centers and manual mills.

Installation Notes

Installation should be performed by qualified machinists following shop safety procedures. Ensure the spindle is fully stopped and the machine is in an e-stop or lockout state before changing tooling. Use a properly sized collet or toolholder to achieve full shank engagement and minimize runout. Avoid overhang beyond what the application requires, as extra-long tools are more susceptible to deflection at aggressive feed rates.