Promax US362122 Square End Mill 1/2 in 3 Flute Carbide

Product Description

The PROMAX US362122 is a solid carbide square end mill designed for precision metal removal in milling operations. It features a 1/2 inch cutting diameter and a 5/8 inch length of cut, making it well suited for slotting, profiling, and peripheral milling in a range of ferrous and non-ferrous materials. The variable helix angle of 46/48 degrees and variable index geometry reduce harmonic vibration during aggressive cuts, improving surface finish and tool life. A zirconium nitride (ZrN) coating adds wear resistance and lubricity. This tool is installed and used by machinists and tool-and-die professionals in CNC machining centers and manual milling setups.

The US362122 fits standard 1/2 inch straight-cylindrical tool holders and collets. It is a single-end, right-hand cut, right-hand flute design with a straight cylindrical shank. The 3-flute configuration balances chip evacuation with cutting edge strength, making it a practical choice for finishing passes or moderate material removal rates in steel, aluminum, and similar machinable materials. The tool is rated as center-cutting, allowing plunge entry where required.

Key Features

• Variable 46/48 degree helix with variable index geometry reduces chatter and vibration during cutting
• ZrN (zirconium nitride) coating improves wear resistance and reduces friction at the cutting edge
• Solid micrograin carbide construction provides rigidity and edge retention
• Center-cutting design allows direct plunge entry without a pre-drilled pilot hole
• Right-hand cut and right-hand flute orientation for standard CNC and manual mill spindles
• 3-flute geometry balances chip clearance and cutting edge contact for finishing and light roughing

Compatibility

Designed for use with standard 1/2 inch straight-cylindrical collets and end mill holders. Part of the PROMAX Series US362 variable helix end mill line.

Installation Notes

Installation is performed by qualified machinists following standard toolholding procedures. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Tighten the collet or end mill holder to the tool holder manufacturer's specified procedure using appropriate wrenches. Verify runout with a dial indicator after clamping to confirm proper seating before beginning a cut.