Accupro 314520 Corner Radius End Mill 3/16 in Solid Carbide

Product Description

The ACCUPRO 314520 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. It carries a 3-flute, right-hand spiral flute geometry with a 37-degree helix angle and a 0.0100-inch corner radius that reduces stress concentration at the cutting edge. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance, extending tool life in moderate-to-high-speed cutting passes. At 3/16 inch in diameter with a 5/8 inch length of cut and a 2.5 inch overall length, this is a compact, single-end tool suited for finish profiling, slotting, and pocket milling in tight geometries. Centercutting capability allows plunge entry without a pre-drilled pilot hole.

This end mill is used in CNC machining centers, vertical mills, and manual knee mills where close-tolerance profiling or corner-blending is required. The 3/16 inch shank diameter matches the cutting diameter, making it compatible with standard collet chucks and end mill holders in that size. Typical applications include die and mold work, aerospace components, and precision fixture machining where a small-diameter tool with a controlled corner break is specified. The micrograin carbide substrate supports higher cutting speeds and finer finishes than standard carbide grades.

Key Features

• Solid micrograin carbide substrate for rigidity and wear resistance in demanding cuts
• ZrN coating increases surface hardness and reduces heat buildup at the cutting edge
• 0.0100-inch corner radius reduces edge chipping and improves workpiece surface finish
• 3-flute, right-hand spiral geometry with 37-degree helix for efficient chip evacuation
• Centercutting design allows direct plunge entry without pilot drilling
• Single-end, regular-length configuration for use in standard collet and end mill holder setups

Compatibility

Designed as a direct-fit replacement or standard tooling selection for 3/16 inch collet chucks and end mill holders; no specific model or system compatibility data was provided in the source data for this SKU.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully powered down and locked before inserting or removing the tool from the holder. Seat the shank fully into the collet or holder to the recommended engagement depth before torquing the retention mechanism. Confirm runout with a dial indicator before beginning the first cut, as micrograin carbide tools are sensitive to lateral loading caused by excessive runout.