Gws 121516 Corner Radius End Mill 1/2 in 4 Flute Carbide

Product Description

The GWS 121516 is a solid carbide corner radius end mill designed for demanding metal removal in steel, cast iron, superalloys, titanium, stainless steel, and hard materials. It features a 0.5000-inch diameter, a 0.0200-inch corner radius, and four helical flutes with a variable helix and variable index geometry. The FX1 coating enhances wear resistance and edge life across a wide range of workpiece materials. At 3 inches overall length with a 1.125-inch length of cut and a straight-cylindrical h6-tolerance shank, this tool fits standard end mill holders and suits both roughing and finishing operations in a single setup.

The 121516 is suited for CNC machining centers and manual mills where tight corner radii and long tool life are priorities. Its centercutting capability allows plunge entry, and the variable helix geometry helps reduce chatter in interrupted cuts and thin-wall workpieces. Typical applications include die and mold work, aerospace component machining, and precision part production involving steel and superalloy stock.

Key Features

• 0.5000-inch mill diameter with 0.0200-inch corner radius for controlled edge blending
• Variable helix and variable index geometry reduces chatter and vibration
• Four helical flutes with right-hand cut and right-hand flute direction
• Centercutting design allows direct plunge entry without pre-drilling
• FX1 coating rated for steel, stainless steel, cast iron, superalloys, titanium, and hard materials
• Submicron carbide grade for edge integrity in high-hardness workpieces

Compatibility

Designed for use with standard end mill holders. Compatible with primary workpiece materials including steel, cast iron, superalloys, and titanium, and secondary workpiece materials including stainless steel, per GWS Series 1030 specifications.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Secure the shank in a clean, properly sized end mill holder using the appropriate torquing procedure for that holder type. Confirm spindle direction matches the right-hand cutting geometry before running. Inspect the corner radius and cutting edges for chips or coating damage before each use, particularly when machining hardened or abrasive materials.