Accupro 314934 Corner Radius End Mill 5/8 in 3 Flute Zrn

Product Description

The ACCUPRO 314934 is a single-end corner radius end mill designed for precision milling in ferrous and non-ferrous materials. Built from micrograin solid carbide and coated with ZrN (zirconium nitride), it delivers extended tool life and reduced edge buildup in demanding cutting environments. The 0.120-inch corner radius reduces stress concentration at the cutting edge, while the 37-degree variable-angle spiral flute geometry promotes efficient chip evacuation. At 0.625 inches in diameter with a 1.625-inch length of cut and 3.5-inch overall length, it fits standard toolholding setups used in CNC machining centers and manual mills. Three right-hand flutes and a centercutting design allow both peripheral and plunge operations.

This end mill is suited for finish milling, profiling, and pocketing operations where a blended corner radius is required. It is commonly used in tool-and-die work, mold making, aerospace component machining, and general precision shop work. The ZrN coating makes it a strong choice when cutting stainless steel, alloy steels, and other abrasive materials where uncoated carbide wears prematurely. The 5/8-inch shank diameter fits standard ER collets and end mill holders found in most CNC and manual machining setups.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• ZrN coating extends tool life and reduces heat buildup at the cutting edge
• 0.120-inch corner radius reduces chipping and stress cracking at part corners
• Centercutting design allows direct plunge entry into workpiece material
• Right-hand spiral flutes with right-hand cutting direction for standard CNC spindle use
• Tight shank tolerance (+0.0001 / -0.0004 inches) for secure, low-runout toolholder fit

Compatibility

Designed as a direct-fit replacement for standard 5/8-inch shank corner radius end mill applications using ER collets, end mill holders, or shrink-fit toolholders in CNC machining centers and manual knee mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and locked out before inserting or removing the tool from any toolholder. Clean the shank and collet bore before seating to prevent runout caused by chips or contamination. Verify pull-out force and toolholder torque specifications per the toolholder manufacturer guidelines before beginning a cut.