Gws 121551 Corner Radius End Mill 1in 4 Flute Carbide

Product Description

The GWS 121551 is a solid carbide corner radius end mill designed for high-performance milling in demanding shop environments. Built to a 1 inch diameter with a 0.015 inch corner radius, this single-end tool runs 4 helical flutes in a right-hand cutting direction with a variable helix and variable index geometry. The 2.25 inch length of cut and 5 inch overall length suit deep-pocket and full-slot applications. A straight-cylindrical shank at 1 inch diameter fits standard end mill holders. Machinists and tooling technicians install this tool in CNC machining centers where consistent edge geometry and vibration damping are priorities.

This end mill is rated for roughing and finishing operations across a broad range of workpiece materials. Primary applications include steel, cast iron, superalloys, titanium, and hard materials. Secondary material coverage extends to stainless steel. The centercutting design allows plunge entry, expanding its use in pocket milling, slotting, and contour finishing. The submicron carbide grade provides the edge toughness needed for interrupted cuts and high-feed strategies on ferrous and exotic alloys.

Key Features

• Solid carbide submicron grade construction for edge stability in hard and superalloy materials
• Variable helix and variable index geometry reduces harmonic chatter during aggressive cuts
• 0.015 inch corner radius protects the cutting edge and improves surface finish at part corners
• Centercutting capability allows direct plunge entry without pre-drilling
• Right-hand flute direction and right-hand cutting orientation for standard spindle operation
• 1 inch straight-cylindrical shank with h6 tolerance for precise fit in end mill holders

Compatibility

Designed for use with standard end mill holders accepting a 1 inch straight-cylindrical shank. Suited for CNC machining centers running steel, stainless steel, cast iron, superalloys, titanium, and hard materials.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the shank fully in the end mill holder to the manufacturer-specified engagement depth before tightening. Verify spindle speed and feed rates against the material being cut before starting the program. Inspect the cutting edges for chipping or wear at regular intervals, especially when milling superalloys or hardened steels.