Osg VGM5-0056 Corner Radius End Mill 0.25in 5 Flute Carbide

Product Description

The OSG VGM5-0056 is a single-end corner radius end mill designed for demanding metal removal and finishing operations. It features a 0.25-inch diameter, a 0.06-inch corner radius, and five flutes ground from solid carbide. The EXO coating provides elevated hardness and heat resistance, extending tool life in high-temperature cutting environments. A 40-degree high helix angle promotes chip evacuation and reduces cutting forces. Variable index flute spacing helps suppress chatter and vibration during aggressive cuts. Machinists and toolroom operators install this end mill into standard straight-shank toolholders for use on CNC machining centers and milling machines.

This end mill is suited for roughing and finishing passes on steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The short length-of-cut geometry — 0.5 inches — keeps deflection low when profiling, slotting, or contouring in tight cavities. The 2.5-inch overall length fits common tool assemblies without requiring extended-reach holders. Right-hand flute direction and right-hand cutting orientation are standard for conventional CNC milling setups.

Key Features

• Solid carbide construction with EXO coating for heat and wear resistance in hard materials
• 0.06-inch corner radius reduces stress concentration at the cutting edge and extends tool life
• Five-flute design with variable index for chatter suppression and improved surface finish
• 40-degree high helix angle promotes efficient chip evacuation
• Center-cutting capable — allows plunge entry without a pre-drilled pilot hole
• Right-hand cut, right-hand spiral with normal pitch — compatible with standard CNC toolpaths

Compatibility

Designed for use with straight-shank cylindrical toolholders accepting a 0.25-inch shank diameter. Suitable for CNC machining centers running steel, stainless steel, cast iron, superalloys, titanium, and hard workpiece materials per material codes P, M, K, S, and H.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Secure the 0.25-inch straight shank in a collet or end mill holder to the manufacturer-specified clamping torque for that holder type. Verify runout at the tip before initiating a cut, as excessive runout accelerates edge wear on multi-flute carbide tools. Always power down and lock out the spindle before changing or inspecting tooling in accordance with applicable machine-safety procedures.