Promax 119-02444 Corner Radius End Mill 3/8 in 3 Flutes

Product Description

The PROMAX 119-02444 is a solid carbide corner radius end mill designed for roughing and finishing operations in a single tool. It carries a 3/8 inch diameter with a 0.02 inch corner radius and three right-hand flutes ground at a 40-degree helix angle. The AlTiN coating provides heat resistance and hardness retention at elevated cutting temperatures, extending tool life in ferrous and high-temp alloy applications. Machined from micrograin carbide, the 119-02444 delivers consistent edge geometry and dimensional accuracy. It is sized for CNC machining centers and manual mills requiring a straight-cylindrical shank with close shank diameter tolerances.

This end mill suits roughing and finish-milling operations where a blend radius on the corner reduces stress concentration and extends part life. The single-end, center-cutting design allows plunge entry and is suited for slotting, profiling, and pocket milling. With a 2 inch length of cut and 4 inch overall length, it fits standard toolholders and collet chucks on vertical and horizontal machining centers in production and job-shop environments. Machinists working in aerospace, mold and die, and general metalworking will find this tool appropriate for demanding material removal and finish requirements.

Key Features

• AlTiN coating for elevated heat resistance and extended tool life in hard and high-temp alloys
• 0.02 inch corner radius reduces stress concentration and improves surface finish at workpiece edges
• 40-degree helix angle promotes smooth chip evacuation and reduced cutting forces
• Micrograin solid carbide construction for edge retention and dimensional consistency
• Center-cutting geometry allows direct plunge entry without a pre-drilled hole
• Shank diameter tolerance of -0.0001 to -0.0004 inches ensures secure collet and toolholder fit

Compatibility

Designed as an OEM-style tooling solution for CNC machining centers and manual mills using standard 3/8 inch straight-cylindrical collet chucks or toolholders.

Installation Notes

Installation is performed by qualified machinists following standard toolholder and collet chuck procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Verify collet bore size matches the 3/8 inch straight-cylindrical shank and torque the toolholder to the machine manufacturer's specifications. Confirm runout with a dial indicator before production cuts to protect both the tool and the workpiece.