Accupro 311804 Corner Radius End Mill 3/4 in 5 Flute Carbide

Product Description

The ACCUPRO 311804 is a single-end, corner radius end mill designed for high-performance milling in metalworking and machining applications. Built from solid micrograin carbide and coated with AlCrTiN, it handles demanding cutting conditions where heat resistance and edge retention are critical. The 311804 features a 3/4 inch diameter with a 0.030 inch corner radius, a 5-flute configuration, and a 38-degree helix angle. It is centercutting, allowing plunge entry. A variable index geometry reduces harmonic vibration during long-cut passes, improving surface finish and tool life across a range of materials.

This end mill is suited for milling ferrous metals, hardened steels, and high-temperature alloys in job shop, production, and tool-and-die environments. With a 2.25 inch length of cut and 5.0 inch overall length, it handles medium-depth pocketing, slotting, and profiling operations. The right-hand flute direction and right-hand cutting geometry are standard for conventional CNC vertical and horizontal machining centers. Installation and operation are performed by trained machinists or CNC programmers working in machine shop settings.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• AlCrTiN coating provides oxidation resistance and extended tool life at elevated cutting temperatures
• 5-flute design increases feed rate capability compared to 4-flute equivalents
• 38-degree helix angle improves chip evacuation and reduces cutting forces
• Variable index flute spacing reduces chatter and vibration
• Centercutting geometry allows direct plunge entry into workpiece

Compatibility

Designed as an OEM-style replacement for solid carbide corner radius end mills with a 3/4 inch shank diameter, suitable for standard ER or end mill holders on CNC machining centers accepting 3/4 inch straight shanks.

Installation Notes

This end mill is installed and operated by trained machinists in machine tool environments. Always secure the shank fully in a balanced tool holder and verify runout before beginning a cut. Power down and lock out the spindle before changing tooling. Follow the machine manufacturer and cutting tool manufacturer guidelines for speeds and feeds appropriate to the workpiece material.