Accupro 311712 Corner Radius End Mill 5/8 in 5 Flute

Product Description

The ACCUPRO 311712 is a solid carbide corner radius end mill designed for precision milling in demanding machining environments. Built from micrograin solid carbide and coated with AlCrTiN for heat and wear resistance, this 5-flute single-end tool delivers clean, stable cuts at elevated speeds and feeds. It features a 5/8 inch mill diameter, a 1.25 inch length of cut, and a 3.5 inch overall length. The variable index geometry reduces harmonic chatter during aggressive cuts. Centercutting capability allows plunge entry without a pre-drilled pilot hole. Licensed machinists and CNC programmers working in production shops, tool rooms, and job shops are the primary users of this tool.

The 311712 is suited for milling ferrous and hardened materials where a corner radius profile is required to blend walls with floors and reduce stress concentration at inside corners. The 0.030 inch corner radius produces a controlled fillet without a secondary operation. Right-hand cutting and right-hand flute spiral make it compatible with standard CNC machining centers and vertical mills. It is appropriate for finish and semi-finish profiling passes, as well as slotting applications within its diameter range.

Key Features

• Solid micrograin carbide substrate for rigidity and edge retention
• AlCrTiN coating improves heat resistance and extends tool life in ferrous materials
• 5 flutes with variable index spacing to reduce chatter and improve surface finish
• 0.030 inch corner radius blends walls and floors, reducing stress risers
• Centercutting design allows direct plunge entry
• 38-degree helix angle promotes efficient chip evacuation and smooth cutting action

Compatibility

Designed for use in standard CNC machining centers and vertical mills accepting a 5/8 inch shank. Suitable for ferrous metals, hardened steels, and similar materials where AlCrTiN coatings provide maximum benefit.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down or placed in an e-stop state before changing tooling. Use a calibrated tool holder and torque the retention mechanism to the machine manufacturer's specification. Verify runout with a dial indicator before commencing cutting operations.