Promax 106-02424 Corner Radius End Mill 3/8 in 3 Flute

Product Description

The PROMAX 106-02424 is a single-end corner radius end mill ground from micrograin solid carbide and coated with AlTiN for extended tool life in demanding cutting applications. It runs a 3/8 inch diameter with a 0.0200 inch corner radius and a 5/8 inch length of cut. The three-flute geometry and 35-degree helix angle promote efficient chip evacuation while maintaining surface finish quality. Centercutting capability allows plunge entry. This tool is suited for machinists and tool-and-die professionals working in production or job-shop environments on ferrous and hardened materials.

The 106-02424 is used in CNC milling operations where a controlled corner radius is required to reduce stress concentrations in part features such as pockets, slots, and profiled edges. The AlTiN coating supports dry or minimal-lubrication cutting in harder alloys and stainless steels. With a 3/8 inch shank diameter matching the cutter diameter, it seats directly in standard ER or end mill holders without a reduction collet. It is a Series 106 tool from PROMAX, intended for right-hand cutting with right-hand flute direction.

Key Features

• Micrograin solid carbide substrate for rigidity and edge retention
• AlTiN coating for heat resistance and extended tool life in ferrous and hardened materials
• 0.0200 inch corner radius reduces stress concentrations and workpiece edge breakout
• 3-flute, 35-degree helix design for efficient chip evacuation and smooth finish
• Centercutting geometry allows direct plunge milling
• Single-end configuration with right-hand cut and right-hand spiral flutes

Compatibility

Designed for use in standard 3/8 inch end mill holders or ER collet chucks on CNC machining centers and manual mills requiring a corner radius end mill in the Series 106 configuration.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the 3/8 inch shank fully into the holder and torque the retention hardware to the tool-holder specification. Verify runout with a dial indicator before committing to a production cut, as excessive runout accelerates carbide wear and degrades corner radius accuracy.