Accupro 311604 Corner Radius End Mill 1/2 in 5 Flute

Product Description

The ACCUPRO 311604 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hardened materials. Built on the HS series platform, it features a 1/2 inch diameter, a 5/8 inch length of cut, and an AlCrTiN coating that resists heat and wear at elevated cutting temperatures. The 38-degree helix angle and 5-flute geometry promote smooth chip evacuation and surface finish. A 0.060 inch corner radius reduces stress concentration at the cutting edge and extends tool life in demanding applications. This tool is center-cutting and configured for right-hand cutting and flute direction.

The 311604 is suited for profiling, contouring, and finishing passes in CNC machining centers and manual mills where a corner radius profile is required. Its micrograin solid carbide construction handles hardened steels, stainless alloys, and other difficult-to-machine materials. The variable index geometry helps reduce harmonic chatter during deep side-wall cuts. With a 1/2 inch shank diameter and 2-1/2 inch overall length, it fits standard ER and end mill holders found in most production environments. Single-end configuration means the tool is replaced rather than flipped when worn.

Key Features

• AlCrTiN coating for high-temperature wear resistance in ferrous and hardened materials
• 5-flute, 38-degree helix for improved chip evacuation and surface finish
• 0.060 inch corner radius reduces edge chipping and extends tool life
• Micrograin solid carbide substrate for rigidity and edge retention
• Variable index geometry reduces chatter during profiling passes
• Center-cutting design allows plunge entry without a pre-drilled hole

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide corner radius end mill for CNC machining centers and manual mills accepting a 1/2 inch straight shank end mill holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before changing tooling. Seat the shank fully into the collet or end mill holder to the recommended engagement depth and torque the retention nut per the tool holder manufacturer specification. Verify runout with a dial indicator before beginning the cut cycle.