Osg VG434-5009 Corner Radius End Mill 1/2 in 4 Flute Tialn

Product Description

The OSG VG434-5009 is a solid carbide corner radius end mill designed for high-performance milling in demanding materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials. It features a 1/2-inch diameter, a 0.03-inch corner radius, and 4 spiral flutes with a medium helix for efficient chip evacuation and stable cutting. The TiAlN coating, applied via PVD process, provides heat resistance and wear protection during aggressive roughing and finishing passes. This tool is used by machinists and tooling professionals in job shops, production facilities, and precision machining environments.

The VG434-5009 belongs to the OSG VG434 Series and is built for stub-length applications where rigidity and reduced deflection are priorities. With a 5/8-inch length of cut, 2-1/2-inch overall length, and 1/2-inch straight-cylindrical shank, it fits standard toolholders and collet chucks used in CNC machining centers. The variable index geometry and centercutting capability support both slotting and plunge milling operations across a broad range of ferrous and hard materials.

Key Features

• Solid carbide construction for rigidity and precision in hard material applications
• TiAlN PVD coating improves thermal resistance and tool life in steel and stainless steel
• 0.03-inch corner radius reduces chipping and stress concentration at cutting edges
• Variable index flute geometry helps minimize chatter and vibration during cuts
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Right-hand cut, right-hand spiral with normal pitch for compatibility with standard CNC setups

Compatibility

Designed for use with standard CNC toolholders accepting a 1/2-inch straight-cylindrical shank. Suitable for milling steel, stainless steel, cast iron, superalloys, titanium, and hard materials. Shank diameter tolerance is h6; mill diameter tolerance is 0.0000 to -0.0015 inches.

Installation Notes

Installation is performed by qualified machinists or tooling technicians in a CNC machining environment. Ensure the machine spindle is fully stopped and the tool is secured in a clean, properly sized toolholder or collet before beginning setup. Verify runout with a dial indicator after installation to confirm concentricity within acceptable limits. Consult machine tool documentation and applicable shop safety procedures before operating at cutting speed.