Gws 120977 Corner Radius End Mill 3/4 in 5 Flute Carbide

Product Description

The GWS 120977 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining environments. Built to the Series 1035 specification, it features a 3/4 inch cutting diameter, a 2-1/4 inch length of cut, and a 0.03 inch corner radius that protects part edges and reduces stress concentrations at the cutting tip. With five flutes, variable helix, and variable index geometry, this tool is suited for both roughing and finishing passes. The nACo (FX1) coating extends tool life when working in abrasive and high-temperature materials. Overall length is 5 inches with a 3/4 inch straight cylindrical shank held to h6 tolerance.

This end mill is engineered for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The centercutting geometry allows plunge entry, making it versatile for slotting, profiling, and pocket milling operations. It is a single-end, right-hand cut tool with right-hand flute direction and is compatible with standard end mill toolholders. Machinists and tool-and-die professionals running CNC mills or machining centers will find this tool well suited to tight-tolerance work in difficult alloys.

Key Features

• 0.03 inch corner radius reduces edge chipping and stress concentration at the cutting tip
• Variable helix and variable index geometry reduce harmonics and chatter during aggressive cuts
• nACo (FX1) coating improves wear resistance in steel, superalloys, and hard materials
• Centercutting design permits direct plunge milling without a pre-drilled entry hole
• Submicron carbide grade delivers fine grain structure for sharp edges and long tool life
• Five-flute configuration balances chip evacuation with feed rate capability

Compatibility

Designed for use with standard end mill toolholders. Primary workpiece materials include steel, cast iron, superalloys, and titanium. Secondary workpiece material is stainless steel.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. The h6 shank tolerance is intended for precision collet or hydraulic toolholder systems - confirm holder bore size matches the 3/4 inch shank diameter before clamping. Follow machine tool manufacturer torque specifications for the toolholder style in use.