Accupro 314714 Corner Radius End Mill 3/8 in 3 Flute Zrn

Product Description

The ACCUPRO 314714 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous metals. Built from micrograin carbide and coated with ZrN (zirconium nitride), it offers improved surface hardness and wear resistance compared to uncoated tooling. The 3-flute, right-hand spiral configuration supports efficient chip evacuation while maintaining good surface finish. With a 37-degree variable-approach helix and centercutting capability, this end mill handles both plunge entry and full-width profiling cuts. It is used by machinists and CNC operators working in job shops, toolrooms, and production environments.

This end mill is suited for milling operations requiring a controlled corner radius to reduce stress concentration at the base of walls and pockets. The 0.0300 inch corner radius and 0.5000 inch length of cut make it appropriate for shallow-to-medium-depth profiling, slotting, and finishing passes. The 3/8 inch diameter and 3/8 inch shank diameter allow it to fit standard ER and side-lock collet holders common in CNC machining centers and manual mills. The ZrN coating is particularly effective when cutting aluminum, brass, and similar non-ferrous workpiece materials.

Key Features

• Micrograin solid carbide construction for rigidity and edge retention
• ZrN coating provides wear resistance and low friction at the cutting edge
• Centercutting design allows direct plunge entry into the workpiece
• 3-flute spiral geometry balances chip load and surface finish
• 0.0300 inch corner radius reduces stress concentration at pocket floors and walls
• Right-hand cut and right-hand flute direction for standard spindle operation

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills using 3/8 inch collet or end mill holders with standard straight shank retention.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool from its holder. Seat the shank to the recommended engagement depth in the collet or holder and torque the retention nut per the toolholder manufacturer specification. Inspect the cutting edges for chips or damage before each use, and verify runout with a dial indicator after tool changes on critical applications.