Accupro 12179632 Corner Radius End Mill 5/16 in 3 Flute Carbide

Product Description

The ACCUPRO 12179632 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. With a 5/16 inch cutting diameter and a 0.045 inch corner radius, this tool produces smooth, radiused transitions at the base of milled features, reducing stress concentrations and improving surface finish. The 3-flute geometry paired with a 30-degree helix angle promotes efficient chip evacuation and balanced cutting forces. A ZrN (zirconium nitride) coating extends tool life by adding wear resistance and reducing friction at the cutting edge. This end mill is installed and operated by machinists and CNC tooling professionals.

This tool is suited for light to medium milling applications including profiling, slotting, and contouring in materials such as aluminum, non-ferrous alloys, and certain steels. The centercutting design allows it to plunge directly into a workpiece, expanding its range of use in production and job-shop machining environments. The regular length configuration makes it appropriate for standard reach applications where rigidity is preferred over extended projection.

Key Features

• 0.045 inch corner radius reduces edge chipping and improves part surface finish at floor transitions
• 3-flute design balances chip clearance with cutting stability
• 30-degree helix angle promotes smooth cutting action and efficient chip flow
• ZrN coating adds wear resistance and extends tool life in abrasive materials
• Centercutting capability allows direct plunge entry without a pre-drilled hole
• Solid carbide construction provides rigidity and dimensional accuracy

Compatibility

Designed as a standard-shank replacement corner radius end mill for use in CNC machining centers, knee mills, and manual milling machines accepting a 5/16 inch collet or end mill holder.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Secure the 5/16 inch shank in a properly sized collet or end mill holder, ensuring adequate clamping depth and runout within machine tolerances. Confirm spindle speed and feed rate settings are appropriate for the workpiece material before engaging the cut. Inspect the cutting edges and coating condition before each use and remove the tool from service if chipping or coating wear is observed.