Promax 109-04816 Square End Mill 3/4 in 3 Flute Carbide

Product Description

The PROMAX 109-04816 is a solid carbide square end mill designed for precise milling operations in metal fabrication and machining applications. Built from micrograin carbide stock, this single-end tool features a 3/4 inch cutting diameter, a 1-5/8 inch length of cut, and a 4 inch overall length. The zirconium nitride (ZrN) finish improves surface hardness and wear resistance, extending tool life in demanding cutting cycles. With a 40-degree helix angle and three spiral flutes, it delivers efficient chip evacuation and a stable cut. This tool is installed and operated by machinists and CNC programmers working on vertical or horizontal milling centers.

The 109-04816 is suited for slotting, profiling, and peripheral milling in ferrous and non-ferrous materials where a three-flute geometry provides a balance of chip clearance and cutting edge strength. The right-hand cut and right-hand flute configuration make it compatible with standard spindle rotation on most CNC and manual milling machines. The 3/4 inch square shank seats directly in standard end mill holders, collet chucks, and shrink-fit toolholders. Series 109 tools from PROMAX are designed for general-purpose to mid-production machining environments.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention
• ZrN coating increases surface hardness and reduces friction at the cutting edge
• 40-degree helix angle promotes smooth chip flow and reduces chatter
• Three spiral flutes balance chip clearance with cutting edge support
• Right-hand cut and right-hand flute for standard milling spindle compatibility
• Mill diameter tolerance of +0.000 / -0.002 inches for consistent fitment and dimensional accuracy

Compatibility

Designed as a direct-mount end mill for use in standard 3/4 inch end mill holders, ER collet chucks, and shrink-fit toolholding systems on CNC vertical machining centers and manual knee mills.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before inserting or removing the tool from its holder. Ensure the holder bore and shank are clean and free of chips or burrs before seating. Follow the toolholder manufacturer's torque specifications for set screws or clamping nuts - do not over-tighten, as micrograin carbide shanks can crack under excessive clamping force.