Promax 106-01612 Corner Radius End Mill 1/4 in 3 Flute

Product Description

The PROMAX 106-01612 is a solid carbide corner radius end mill designed for precision milling in metals, composites, and hardened materials. The tool features a 1/4 inch diameter, a 0.02 inch corner radius, and three right-hand spiral flutes with a 35-degree helix angle. A TiCN coating improves wear resistance and reduces heat buildup during aggressive cuts. This is a single-end, centercutting design, meaning it can plunge directly into the workpiece as well as cut laterally. Machinists and toolroom professionals use this end mill on CNC mills and manual vertical mills where controlled corner geometry and surface finish are critical.

The 106-01612 is suited for finish milling, profiling, and contouring operations where a defined corner radius is required to reduce stress concentrations in the workpiece or match a specific part geometry. Its 3/4 inch length of cut and 2-1/2 inch overall length make it appropriate for standard-depth cavities and slots in die and mold work, aerospace components, and general precision machining. The 1/4 inch shank diameter fits standard ER collet chucks and end mill holders common in most shop setups.

Key Features

• 0.02 inch corner radius for controlled edge geometry and reduced stress risers in finished parts
• TiCN coating for improved hardness, wear resistance, and tool life in ferrous and non-ferrous materials
• Micrograin solid carbide construction for rigidity and edge retention
• 35-degree helix angle promotes efficient chip evacuation and smooth cutting action
• Centercutting design allows direct plunge entry into the workpiece
• Right-hand cut and right-hand flute direction - standard orientation for most CNC and manual mill spindles

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for applications requiring a 1/4 inch diameter corner radius end mill with a 1/4 inch shank in standard ER collet chucks, end mill holders, and similar toolholding systems.

Installation Notes

This end mill is installed and serviced by machinists and toolroom technicians. Before changing tooling, power down the spindle completely and confirm the machine is in a safe, locked state per shop safety protocols. Ensure the collet or toolholder is clean and free of chips before seating the shank. Follow the tool manufacturer and machine manufacturer guidelines for runout tolerance and clamping torque appropriate to the holder style in use.