Osg VG434-6253 Corner Radius End Mill 5/8 in 4 Flute Carbide

Product Description

The OSG VG434-6253 is a solid carbide corner radius end mill designed for high-performance milling across a broad range of workpiece materials. It features a 5/8-inch mill diameter, a 1/8-inch (0.1250-inch) corner radius, and four flutes with a right-hand cutting direction. The TiAlN PVD coating provides thermal resistance and extended tool life in demanding cutting conditions. At 3-1/2 inches overall length with a 1-1/4-inch length of cut, this single-end, centercutting tool is built for both roughing and finishing operations. The micrograin carbide substrate supports cutting in steel, stainless steel, cast iron, superalloys, titanium, and hard materials.

The VG434-6253 is suited for use in CNC machining centers and manual mills where corner radius end mills are required to produce blend radii and reduce corner chipping on finished parts. Its Weldon flat shank provides positive drive retention in compatible toolholders. The centercutting geometry allows for plunge entry, expanding its range of application in production and job shop environments. Typical users include machinists and tool-and-die professionals working with ferrous and difficult-to-machine alloys.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in hard and abrasive materials
• TiAlN PVD coating for high-temperature performance in steel, stainless steel, cast iron, superalloys, and hard materials
• 1/8-inch corner radius reduces stress concentration and extends part and tool life at corners
• Centercutting design allows direct plunge milling without a pre-drilled entry
• Weldon flat shank for secure, positive drive in standard toolholders
• Right-hand flute direction with four flutes for balanced chip evacuation and surface finish in roughing and finishing cuts

Compatibility

Designed for use with standard toolholders accepting a 5/8-inch Weldon flat shank. Suitable for machining steel, stainless steel, cast iron, superalloys, titanium, and hard materials per Series VG434 material application guidance.

Installation Notes

Installation is performed by qualified machinists following standard toolholder torque and retention procedures for Weldon flat shank end mills. Confirm toolholder bore size matches the 5/8-inch shank diameter before mounting. Verify spindle direction is set to right-hand rotation before engaging the cut. Always power down and lock out the machine before changing or inspecting tooling.