Accupro 311364 Corner Radius End Mill 1/8 in 5 Flute Carbide

Product Description

The ACCUPRO 311364 is a solid carbide corner radius end mill designed for precision milling in demanding machining environments. With a 1/8 inch diameter and a 0.030 inch corner radius, it produces controlled edge breaks and blended transitions on workpiece profiles. The 5-flute configuration paired with a 38-degree variable-index helix promotes efficient chip evacuation and smooth cutting action. An AlCrTiN coating provides thermal resistance and extended tool life in high-speed and dry-cutting applications. Overall length is 2 inches with a 1/2 inch length of cut. Machinists and CNC programmers working in tool-and-die, aerospace, or precision job shops are the primary users of this tool.

This end mill is suited for finishing and semi-finishing operations on hardened steels, stainless alloys, and high-temp materials where corner geometry control is critical. The centercutting design allows plunge entry, expanding its usefulness in slot milling, pocket interpolation, and ramp entry operations. The 1/8 inch shank matches the 1/8 inch diameter, making it compatible with standard collet holders in that size range. Single-end construction means the tool is replaced rather than reversed when worn.

Key Features

• AlCrTiN coating for thermal stability and wear resistance in high-speed cutting
• 5-flute design increases feed rate capability and surface finish quality
• 38-degree helix angle with variable index reduces harmonic vibration during cuts
• 0.030 inch corner radius blends floor-to-wall transitions and reduces stress concentration
• Centercutting geometry enables direct plunge, ramp, and helical entry
• Micrograin solid carbide substrate for rigidity and edge retention in tough materials

Compatibility

Designed as a direct-fit replacement for 1/8 inch shank collet systems; compatible with standard ER and straight-bore collet holders accepting a 1/8 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank to the full recommended insertion depth in the collet or holder and torque the nut to the collet manufacturer specification. Inspect runout with a dial indicator after mounting; excessive runout will accelerate wear on a small-diameter tool of this type.