Promax 106-00824 Corner Radius End Mill 1/8 in 3 Flute

Product Description

The PROMAX 106-00824 is a solid carbide corner radius end mill designed for precision milling in demanding metalworking applications. Built from micrograin carbide and coated with AlTiN (aluminum titanium nitride), it delivers strong wear resistance and thermal stability at high cutting speeds. The tool features a 0.010 inch corner radius that blends the cutting edge into the floor of the cut, reducing stress concentration and chipping. With a 1/8 inch diameter, 3 flutes, and a 35-degree right-hand helix, it is well suited for finish milling, slotting, and profiling in hardened steels, stainless, and high-temperature alloys. Licensed machinists and CNC operators are the primary users.

This end mill fits standard CNC machining centers and manual mills accepting a 1/8 inch shank. The single-end, centercutting design allows plunge entry and lateral milling in the same operation. It is used in production shops, tool rooms, and job shops working with tight-tolerance parts where a small-diameter tool must maintain dimensional stability through the full length of cut. The 1/4 inch length of cut and 1-1/2 inch overall length make it practical for shallow-pocket and contour work in compact workpieces.

Key Features

• Micrograin solid carbide substrate provides rigidity and edge retention in hard materials
• AlTiN coating extends tool life in dry or high-speed cutting of ferrous and exotic alloys
• 0.010 inch corner radius reduces edge chipping and improves surface finish at pocket floors
• 3-flute, 35-degree right-hand helix balances chip evacuation with cutting stability
• Centercutting geometry allows direct plunge entry without a pre-drilled hole
• Tight shank diameter tolerance (-0.0001 to -0.0004 inches) ensures consistent tool holding in collets and chucks

Compatibility

Designed for use in CNC machining centers and manual mills with 1/8 inch collets or tool holders; part of the PROMAX Series 106 corner radius end mill family.

Installation Notes

Installation is performed by qualified machinists or CNC operators. Secure the shank fully in a clean, properly sized collet or end mill holder before running; do not exceed the collet's minimum grip depth. Confirm spindle runout is within acceptable limits before engaging the cut, as runout has an amplified effect on small-diameter tools. Follow the tool manufacturer's recommended speeds and feeds for the workpiece material and coating type.