Promax 129-33214 Corner Radius End Mill 0.5in 4 Flute

Product Description

The PROMAX 129-33214 is a solid carbide corner radius end mill designed for precision milling in ferrous and non-ferrous materials. It features a 0.5-inch mill diameter, a 1-inch length of cut, and a 0.02-inch corner radius that reduces stress concentrations at the cutting edge and extends tool life in demanding applications. The AlTiN coating provides thermal resistance and surface hardness, making this tool well-suited for dry or semi-dry high-speed machining. With 4 flutes and a 40-degree helix angle in a right-hand spiral configuration, it delivers efficient chip evacuation and a stable cut. Machinists and toolroom operators working on CNC machining centers are the primary users of this end mill.

This end mill fits conventional and high-speed CNC milling applications where a radiused corner profile is required to reduce edge chipping or meet part geometry requirements. The single-end, regular-length configuration makes it a practical choice for general-purpose slotting, profiling, and peripheral milling on steel, stainless steel, hardened alloys, and cast iron. The Series 129 designation places it within PROMAX's standard solid carbide end mill lineup for production and prototype work.

Key Features

• 0.02-inch corner radius with a tolerance of plus 0.001 to minus 0.001 inch for precise edge geometry
• AlTiN coating for elevated heat resistance and extended tool life in hard material machining
• Micrograin solid carbide substrate provides rigidity and wear resistance
• 40-degree helix angle promotes smooth cutting action and efficient chip flow
• Right-hand cut, right-hand flute spiral in a single-end configuration
• 4-flute design balances chip clearance with surface finish quality

Compatibility

Designed as a standard shank end mill for use in CNC machining centers and milling machines that accept a 0.5-inch collet, end mill holder, or shrink-fit toolholder.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the toolholder is clean and free of chips before seating the shank. Confirm the 0.5-inch shank is secured to the proper minimum insertion depth per the toolholder manufacturer's specification. Review feeds, speeds, and depth-of-cut parameters against the workpiece material before engaging the cut, as this end mill is not center-cutting and should not be used for plunge operations.