Promax 129-22412 Corner Radius End Mill 3/8 in 4 Flute

Product Description

The PROMAX 129-22412 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining environments. Built from micrograin solid carbide and coated with TiCN (titanium carbonitride), it delivers extended tool life in demanding cutting applications. The 0.015-inch corner radius reduces stress concentration at the cutting edge, helping to minimize chipping and improve surface finish. With a 3/8-inch diameter, 4 flutes, and a 40-degree helix angle, this single-end tool is suited for right-hand cutting in ferrous and non-ferrous materials. Installed by machinists and toolroom professionals, it is a reliable option for production and prototype work alike.

This end mill is configured as a single-end, right-hand flute, right-hand cutting tool in the Series 129 lineup. It is appropriate for use in CNC machining centers and manual mills where a corner radius profile is required to reduce sharp internal corners on finished parts. The 7/8-inch length of cut and 2-1/2-inch overall length make it well suited for standard-depth slotting, profiling, and peripheral milling operations in shop environments.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• TiCN coating extends tool life in abrasive and hard-material applications
• 0.015-inch corner radius reduces edge chipping and improves part surface finish
• 40-degree helix angle promotes efficient chip evacuation and smooth cutting action
• 4-flute geometry balances material removal rate with surface quality
• Right-hand cut, right-hand flute, single-end configuration for standard milling setups

Compatibility

Designed as a direct-fit replacement or standard tooling option for CNC machining centers and conventional milling machines accepting a 3/8-inch straight shank. Part of the PROMAX Series 129 corner radius end mill family.

Installation Notes

Installation is performed by qualified machinists using an appropriate collet or end mill holder sized for a 3/8-inch shank. Ensure the machine spindle is fully stopped and locked out before changing tooling. Confirm runout is within acceptable limits after securing the tool in the holder. This end mill is not center-cutting and should not be used for direct plunge operations.