Promax 102-04016 Corner Radius End Mill 5/8 in 3 Flute

Product Description

The PROMAX 102-04016 is a solid carbide corner radius end mill designed for precision milling applications requiring a controlled edge radius. With a 5/8 inch cutting diameter and a 1-1/4 inch length of cut, this tool handles slotting, profiling, and contouring in ferrous and non-ferrous materials. The corner radius ranges from 0.055 to 0.065 inches, reducing stress concentrations at part corners and extending tool life in demanding cuts. A ZrN (zirconium nitride) coating adds surface hardness and heat resistance. Three flutes with a 40-degree high helix angle improve chip evacuation and deliver a smoother finish. Centercutting geometry allows plunge entry. Licensed machinists and CNC programmers in job shops and production environments are the primary users of this tool.

This end mill suits CNC machining centers and manual mills running medium to high feeds in steel, alloy steel, cast iron, and similar materials. The regular length profile and 5/8 inch shank diameter make it compatible with standard ER and end mill holders. The high helix angle is particularly effective in thin-wall workpiece applications where vibration control matters. Coarse pitch flute spacing supports chip clearance in deeper axial cuts. Series 102 from PROMAX targets general-purpose production milling where dimensional accuracy and edge consistency are required across repeated operations.

Key Features

• 5/8 inch cutting diameter with 1-1/4 inch length of cut for standard depth slotting and profiling
• Corner radius of 0.055 to 0.065 inches reduces corner chipping and part stress concentrations
• ZrN coating provides elevated surface hardness and thermal resistance
• 3-flute, 40-degree high helix design promotes efficient chip evacuation and smooth wall finish
• Centercutting geometry enables direct plunge entry without pilot drilling
• Right-hand cut and right-hand flute direction for standard CNC spindle compatibility
• Solid carbide construction delivers rigidity and dimensional stability at elevated feeds

Compatibility

Designed as an OEM-style replacement and general-purpose solid carbide corner radius end mill for use in standard 5/8 inch end mill holders and collet chucks on CNC machining centers and manual knee mills.

Installation Notes

Installation is performed by machinists and CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the holder and torque the retention mechanism to the holder manufacturer's specification. Verify runout at the cutting edge with a dial indicator before beginning production cuts.