Accupro ED99921223 Square End Mill 3/4 Inch 3 Flute

Product Description

The ACCUPRO ED99921223 is a single-end square end mill designed for general-purpose milling, slotting, and profiling operations on metallic workpieces. Built from powdered metal and finished with a titanium carbonitride (TiCN) coating, it delivers improved wear resistance and surface hardness compared to standard high-speed steel tooling. The mill measures 0.75 inches in diameter with a 3-inch length of cut, a 0.75-inch shank diameter, and a 5.25-inch overall length. Three spiral flutes at a 42-degree helix angle promote efficient chip evacuation and smooth cutting action. This tool is installed and operated by machinists and CNC programmers in job shop, production, and maintenance environments.

This end mill is suited for milling ferrous and non-ferrous metals in vertical machining centers and manual knee mills. The centercutting geometry allows direct plunge entry without a pre-drilled hole, making it practical for pocket milling and ramp entry applications. Right-hand cut and right-hand flute configuration match standard spindle rotation. The TiCN coating supports extended tool life in moderate-to-high surface-speed applications on steel, cast iron, and similar materials.

Key Features

• Powdered metal construction with TiCN finish for enhanced wear resistance
• 42-degree helix angle on spiral flutes for efficient chip evacuation
• Centercutting design allows direct plunge entry into the workpiece
• Right-hand cut, right-hand flute for use with standard spindle rotation
• Mill diameter tolerance of +0.0015 / -0.0000 inches for consistent fit
• Shank diameter tolerance of -0.0001 / -0.0005 inches for secure toolholder engagement

Compatibility

Designed as an OEM-style replacement or direct-fit cutting tool for standard 3/4-inch tool holders used in vertical and horizontal machining centers.

Installation Notes

Installation is performed by qualified machinists. Secure the shank fully within a collet, end mill holder, or shrink-fit holder before operation, and verify runout with a dial indicator prior to cutting. Power down and lock out the machine spindle before changing tooling. Follow the machine manufacturer and cutting tool manufacturer guidelines for speeds, feeds, and depth of cut appropriate to the workpiece material.