Accupro 12183121 Corner Radius End Mill 5/8 in 4 Flute

Product Description

The ACCUPRO 12183121 is a solid carbide corner radius end mill designed for precision milling in ferrous and hard alloy materials. It features a 5/8 inch diameter with a 0.06 inch corner radius, which reduces stress concentration at the cutting edge and extends tool life compared to a sharp-corner geometry. With four right-hand spiral flutes and a TiCN coating, this end mill handles demanding cuts while managing heat and abrasion. The long flute length of 2.125 inches supports deep slotting and profiling operations. Machinists in job shops and manufacturing facilities are the primary users of this tool.

This end mill is suited for milling operations that require a controlled corner radius on finished features such as pockets, slots, and contoured profiles. The centercutting design allows plunge entry into the workpiece, adding flexibility to the toolpath. Its long-length classification makes it appropriate for applications where reach is required, such as deep pocket milling or workpieces with tall vertical walls. The right-hand cutting direction and spiral flute geometry are standard for CNC vertical machining centers and manual knee mills.

Key Features

• 0.06 inch corner radius reduces edge chipping and improves surface finish on milled corners
• TiCN coating provides increased surface hardness and lubricity for improved wear resistance
• Micrograin solid carbide substrate delivers rigidity and dimensional stability under load
• Centercutting geometry allows direct plunge entry without a pre-drilled pilot hole
• Long flute length of 2.125 inches supports deep pocket and deep slot milling
• Right-hand spiral flutes with variable-free, consistent index for predictable chip evacuation

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for standard 5/8 inch collet or end mill holders on CNC machining centers and manual mills.

Installation Notes

Installation is performed by machinists using a standard 5/8 inch ER collet, side-lock holder, or end mill holder. Ensure the holder bore and shank are clean and free of chips before seating the tool. Verify runout after installation using a dial indicator before beginning the cut. Follow machine tool manufacturer torque specifications for drawbar and set screw fasteners.