Accupro 12178989 Square End Mill 9/16 in 4 Flute Carbide

Product Description

The ACCUPRO 12178989 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. With a 9/16 inch (0.5625 inch) mill diameter, 1-1/4 inch length of cut, and a 4-flute spiral configuration, this tool delivers clean, accurate cuts in ferrous and non-ferrous materials. The nACRo physical vapor deposition finish improves surface hardness and heat resistance, extending tool life in demanding cuts. The micrograin carbide substrate provides the rigidity needed to hold tight tolerances across the full length of cut. This end mill is installed and operated by machinists and CNC operators working on mills, machining centers, and manual knee mills.

This end mill is suited for slotting, profiling, and peripheral milling operations in production and job shop environments. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action, making it effective on a range of materials including alloy steels and stainless. The centercutting geometry allows plunge entry directly into the workpiece. With a right-hand cut and right-hand flute configuration, it is compatible with standard spindle rotation on most vertical and horizontal milling machines.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance
• nACRo finish for improved heat resistance and extended tool life
• 40-degree helix angle promotes efficient chip evacuation
• Centercutting design allows direct plunge entry
• Right-hand cut and right-hand flute for standard spindle compatibility
• Mill diameter tolerance of +0.000 / -0.002 inches for consistent fit

Compatibility

Designed as a standard shank square end mill compatible with 9/16 inch collets, end mill holders, and tool holders used on vertical machining centers and manual milling machines with appropriate spindle tooling.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's guidelines for tooling and runout specifications. Power down and lock out the machine spindle before inserting or removing the end mill from the tool holder. Ensure the shank is seated fully and the collet or holder is torqued to the tool holder manufacturer's specification. Inspect the cutting edges for chips or wear before each use.