Osg 82711721 Corner Radius End Mill 3/8 in 4 Flute Carbide

Product Description

The OSG 82711721 is a solid carbide corner radius end mill designed for precision material removal in demanding machining applications. With a 3/8 inch cutting diameter, 1-1/2 inch length of cut, and a 0.03 inch corner radius, this tool is built for both roughing and finishing operations. The variable helix geometry reduces chatter and harmonics during cutting, improving surface finish and tool life. A Duarise PVD coating adds wear resistance and heat tolerance, making it effective across a wide range of workpiece materials. This end mill is single-ended with a 3/8 inch straight-cylindrical shank, a 4 inch overall length, and 4 right-hand helical flutes.

The OSG 82711721 is suited for machining steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. Its center-cutting capability allows direct plunging into the workpiece. The long flute length and variable helix make it a capable choice for deep-pocket milling, profiling, and contouring on CNC machining centers using a standard toolholder. It fits production and job-shop environments where consistent tool life and surface quality across multiple material types are required.

Key Features

• Variable helix design reduces vibration and chatter for improved surface finish
• Duarise PVD coating provides enhanced wear resistance across high-heat applications
• Center-cutting geometry allows direct plunge entry into workpiece material
• Right-hand cut, right-hand flute direction with normal pitch for predictable chip evacuation
• Compatible with steel, stainless steel, cast iron, non-ferrous metal, superalloys, titanium, and hard materials
• Long flute series at 1-1/2 inches length of cut supports deep-pocket and profile milling

Compatibility

Designed for use with standard toolholders on CNC machining centers. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metal, superalloys, titanium, and hard materials per OSG Series 8271 specifications.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out per shop safety procedures. Ensure the toolholder bore is clean and free of debris before seating the 3/8 inch shank. Verify runout after installation to protect both the tool and the workpiece. Consult OSG published feeds-and-speeds data for Series 8271 before setting cutting parameters.