Accupro 12183329 Corner Radius End Mill 1/2 in 4 Flute

Product Description

The ACCUPRO 12183329 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. With a 1/2 inch diameter, 3 inch length of cut, and a 0.03 inch corner radius, this tool is built for applications requiring tight tolerances and a smooth, blended edge transition. The AlTiN coating provides thermal resistance and extended tool life in high-speed cutting conditions. The micrograin carbide substrate adds wear resistance and rigidity, making this end mill well-suited for ferrous and difficult-to-machine materials. Machinists and tool-and-die professionals are the primary users of this type of cutting tool.

This end mill is used in CNC milling centers for slotting, profiling, and contouring operations on ferrous metals, hardened steels, and other demanding workpiece materials. The extra long 6 inch overall length extends reach into deep cavities or stepped features where standard-length tools cannot access. The single-end, centercutting design allows plunge entry directly into a workpiece. Right-hand cutting and right-hand spiral flute direction are standard for conventional CNC spindle orientation.

Key Features

• 1/2 inch mill diameter with mill diameter tolerance of +0.000000 to -0.002500 inches for tight fitment
• 0.03 inch corner radius with a tolerance of 0.00150 inches for consistent edge blending
• 4-flute, right-hand spiral design for efficient chip evacuation and surface finish quality
• AlTiN coating for high heat resistance and extended tool life in abrasive or ferrous materials
• Micrograin solid carbide construction for rigidity and resistance to chipping
• Centercutting capability allows direct plunge milling without pre-drilled entry points
• Extra long classification with 6 inch overall length for deep-reach applications

Compatibility

Designed as a direct-fit replacement or addition for CNC milling machines accepting a 1/2 inch shank with a shank diameter tolerance of -0.0001 to -0.0004 inches. Suitable for use in ER collet chucks, end mill holders, and similar toolholding systems sized for 1/2 inch shanks.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician familiar with proper toolholding procedures. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully and evenly in the collet or holder and torque the retention nut to the toolholder specification. Verify runout at the tip with a dial indicator before beginning a cut to protect both the tool and the workpiece.