Promax 101-04812 Corner Radius End Mill 3/4 in 4 Flute Carbide

Product Description

The PROMAX 101-04812 is a solid carbide corner radius end mill designed for precision milling operations where a controlled edge radius is required to reduce stress concentrations and extend tool life. It features a 3/4 inch cutting diameter, a 1-5/8 inch length of cut (LOC), and a corner radius range of 0.055 to 0.065 inches. The 4-flute geometry with a 40-degree high helix angle promotes efficient chip evacuation and smooth surface finishes. A TiCN coating adds hardness and wear resistance, making this end mill suitable for ferrous and non-ferrous materials alike. Machinists and tool-and-die professionals install this tool in CNC machining centers and manual mills.

This end mill is suited for slotting, profiling, and finishing passes in production and job-shop environments. The centercutting design allows plunge entry into the workpiece, adding versatility in multi-axis operations. The fine pitch classification and right-hand cutting and flute direction are standard for general milling applications in both ferrous alloys and harder non-ferrous materials. The 3/4 inch shank diameter matches common ER and end mill holder sizes found in most machining centers.

Key Features

• 3/4 inch cutting diameter with 1-5/8 inch length of cut for medium-depth milling passes
• Corner radius range of 0.055 to 0.065 inches reduces edge chipping and stress at part corners
• Solid carbide construction provides rigidity and dimensional stability at higher feed rates
• TiCN coating increases surface hardness and wear resistance for extended tool life
• 40-degree high helix angle promotes chip evacuation and reduces cutting forces
• Centercutting geometry allows direct plunge milling without a pre-drilled pilot hole

Compatibility

Designed for use in standard 3/4 inch end mill holders, collet chucks, and ER-style tooling systems commonly found in CNC machining centers and manual knee mills running right-hand spindle rotation.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's tooling guidelines. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Secure the shank to the full recommended engagement depth in the tool holder and torque the retention mechanism according to the holder manufacturer's specification. Verify runout with a dial indicator before beginning cuts to confirm proper seating.