Robbjack ST-343-16-A Corner Chamfer End Mill 1/2 in 3 Flute

Product Description

The ROBBJACK ST-343-16-A is a solid carbide corner chamfer end mill designed for precision material removal in demanding machining environments. Built from solid carbide with a PVD-applied AlTiN coating, this tool handles steel, stainless steel, cast iron, superalloys, and titanium without losing edge integrity under heat. The 1/2 inch diameter, three-flute geometry runs right-hand cutting and right-hand flute direction. The 40-degree high helix angle promotes efficient chip evacuation and smooth surface finishes across both roughing and finishing passes. Centercutting capability allows plunge entry, adding operational flexibility on the floor.

The ST-343-16-A is suited for slotting, side milling, helical interpolation, and ramping operations on CNC machining centers. Its 1 inch length of cut and 3 inch overall length make it a regular-reach tool appropriate for moderate-depth features in ferrous and exotic alloy workpieces. The straight-cylindrical shank seats cleanly in standard ER collet chucks or end mill holders. This tool is typically installed and operated by machinists and CNC programmers working in job shops, aerospace, and general manufacturing environments.

Key Features

• Solid carbide construction provides rigidity and wear resistance in hard and abrasive materials
• AlTiN PVD coating extends tool life in high-temperature cutting of steel, stainless steel, superalloys, and titanium
• 45-degree chamfer angle with 0.0060 inch chamfer length generates consistent corner breaks
• 40-degree high helix angle promotes aggressive chip evacuation and reduces cutting forces
• Centercutting design permits direct plunge entry without pre-drilling
• Supports slotting, side milling, helical interpolation, and ramping in a single tool

Compatibility

Designed for use in CNC machining applications involving steel, stainless steel, cast iron, superalloys, and titanium. Compatible with standard 1/2 inch straight-cylindrical end mill holders and ER collet systems.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Secure the shank fully within the holder to the recommended gauge length and verify runout before cutting. Power down and lock out the spindle before changing or inspecting the tool. Always confirm spindle speed, feed rate, and depth of cut parameters against the material being machined before initiating a program cycle.