Accupro 12183311 Corner Radius End Mill 1/2 in 4 Flute

Product Description

The ACCUPRO 12183311 is a solid carbide corner radius end mill designed for precision milling in demanding machining environments. Built with a 1/2-inch diameter and a 0.03-inch corner radius, it produces smooth radiused edges while maintaining tight tolerances on finished surfaces. The 4-flute, right-hand spiral geometry paired with a 40-degree helix angle promotes efficient chip evacuation and stable cutting performance. At 6 inches overall length with a 3-inch length of cut, this is an extra-long configuration suited for deep-pocket and extended-reach applications. Micrograin carbide construction supports higher surface footage and longer tool life compared to standard carbide grades.

This end mill is used in vertical and horizontal machining centers for ferrous and non-ferrous material removal where a radiused corner profile is required on the finished part. The single-end, centercutting design allows plunge entry as well as peripheral and slot milling. The bright/uncoated finish is common in applications where coating interaction with the workpiece material is a concern, or where re-sharpening is anticipated. It is typically installed and operated by machinists and CNC programmers in job shop, tool and die, and production machining environments.

Key Features

• Micrograin solid carbide construction for extended tool life and wear resistance
• 0.03-inch corner radius reduces stress concentration and improves edge finish on milled profiles
• 40-degree helix angle promotes smooth cutting action and effective chip evacuation
• Extra-long 6-inch OAL with 3-inch LOC enables deep-pocket and extended-reach milling
• Centercutting design permits direct plunge entry without a pre-drilled pilot hole
• Bright/uncoated finish suitable for applications where coated tools are not preferred

Compatibility

Designed as an OEM-style replacement or direct-fit tooling selection for standard 1/2-inch straight-shank ER or end mill holders used in CNC machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the 1/2-inch shank in a properly sized collet or end mill holder, ensuring full engagement depth per the holder manufacturer specification. Confirm spindle runout is within acceptable limits before engaging the cut, as excessive runout accelerates wear on carbide tooling. Always verify machine spindle direction matches the right-hand cutting geometry of this tool before operation.