Promax 191-11214 Corner Radius End Mill 3/16 in 4 Flute

Product Description

The PROMAX 191-11214 is a solid carbide corner radius end mill designed for precision milling in demanding machining environments. With a 3/16 inch cutting diameter and a 0.01 inch corner radius, this tool reduces stress concentrations at the cutting edge and extends tool life when profiling, slotting, or contouring ferrous and non-ferrous materials. The 4-flute geometry promotes efficient chip evacuation while delivering a fine surface finish. An AlTiN coating adds thermal resistance and hardness, making this end mill well-suited for dry or high-speed cutting applications where heat buildup is a concern. The 40-degree helix angle supports aggressive material removal with reduced chatter.

This end mill is used in CNC machining centers for general-purpose milling operations including side milling, pocket milling, and contour work. Its center-cutting capability allows direct plunge entry into the workpiece. The single-end, right-hand cutting configuration is standard for vertical and horizontal milling setups. It is appropriate for use on hardened steels, alloy steels, stainless steel, and similar materials where an AlTiN coating provides a performance advantage. Machinists and toolroom professionals working in job shops, production environments, and tool-and-die operations will find this a reliable utility end mill.

Key Features

• 0.01 inch corner radius reduces edge chipping and stress concentration at corners
• AlTiN coating provides high-temperature hardness for dry and high-speed cutting
• 4-flute design balances chip clearance with surface finish quality
• 40-degree right-hand helix angle supports smooth, aggressive cuts
• Center-cutting end allows direct plunge entry without pre-drilling
• Solid carbide construction delivers rigidity and wear resistance

Compatibility

Designed as an OEM-style replacement or standard tooling option for CNC milling applications requiring a 3/16 inch shank diameter and corner radius end geometry in the Series 191 product line.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Secure the shank fully into the collet or tool holder to the recommended grip depth before tightening. Verify spindle runout is within acceptable tolerance before cutting, as excess runout accelerates edge wear on carbide tooling. Always power down and lock out the machine spindle before changing or inspecting end mills.