Gws 310255 Corner Radius End Mill 3/8 in 4 Flute Carbide

Product Description

The GWS 310255 is a solid carbide corner radius end mill designed for high-performance material removal in ferrous and difficult-to-machine alloys. It features a 3/8 inch mill diameter with a 0.03 inch corner radius that reduces stress concentration at the cutting edge and extends tool life in demanding applications. The 4-flute, single-end geometry supports both roughing and finishing passes, and the right-hand spiral flutes with variable helix and variable index reduce chatter during aggressive cuts. Overall length is 3 inches with a 1-1/2 inch length of cut. Machinists and tool-and-die professionals working in CNC milling environments are the primary users of this tool.

This end mill is suited for milling steel, stainless steel, superalloys, titanium, and cast iron. The long flute length and centercutting capability make it appropriate for slotting, profiling, and plunge operations in these materials. The straight-cylindrical shank with h6 tolerance fits standard end mill toolholders used in vertical and horizontal machining centers. It is positioned as a long-series tool for applications requiring extended reach into deep pockets or stepped features.

Key Features

• Solid carbide submicron-grade material for hardness and wear resistance in ferrous alloys
• 0.03 inch corner radius reduces edge chipping and improves surface finish at part corners
• Variable helix and variable index geometry damps vibration and reduces chatter
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Right-hand cut, right-hand flute spiral for use with standard CNC spindle rotation
• Long-series flute length of 1-1/2 inches supports deep-pocket and stepped-wall applications

Compatibility

Designed for use with standard end mill toolholders. Primary workpiece materials are steel, stainless steel, superalloys, and titanium; secondary workpiece material is cast iron. UNSPSC Code 27112803.

Installation Notes

Installation is performed by qualified machinists following shop toolholding procedures. Ensure the toolholder bore is clean and free of chips before seating the shank. Confirm runout with a dial indicator before beginning a cut, as excessive runout accelerates edge wear on carbide tooling. Do not exceed the toolholder manufacturer's specified clamping torque for the shank diameter.