Kennametal 3876394 Corner Radius End Mill 1/2 in Solid Carbide

Product Description

The KENNAMETAL 3876394 is a solid carbide corner radius end mill designed for high-performance material removal in non-ferrous metal applications. It features a 1/2 inch cutting diameter, a 1-1/2 inch length of cut, and a 0.03 inch corner radius that reduces stress concentrations at the tool tip and improves surface finish at the cut edge. With 2 flutes and a high helix spiral geometry, this end mill promotes efficient chip evacuation and smooth cutting action. It is a single-end, centercutting tool ground from submicron carbide grade, making it suitable for demanding roughing operations where edge toughness and dimensional consistency matter.

This end mill is intended for use in non-ferrous metal machining, including aluminum, brass, copper, and similar materials. Its coarse pitch and high helix angle make it well suited for aggressive roughing passes where chip load and heat management are critical. The 4 inch overall length and straight-cylindrical 1/2 inch shank fit standard end mill toolholders, making it a practical choice for vertical machining centers, CNC mills, and manual knee mills. It is used by machinists and toolroom professionals across production and job-shop environments.

Key Features

• Submicron solid carbide construction for edge integrity in non-ferrous roughing
• 0.03 inch corner radius reduces chipping and stress at the cutting edge
• 2-flute, high helix spiral design promotes chip evacuation in gummy materials
• Centercutting geometry allows plunge entry
• Bright/uncoated finish suitable for non-ferrous applications where coating buildup is a concern
• Right-hand cut and right-hand flute direction for standard spindle use

Compatibility

Designed for use with standard end mill toolholders. Intended for machining non-ferrous metals. Series AADF per manufacturer catalog number 4K6213055B.

Installation Notes

Installation should be performed by a qualified machinist following safe toolchanging procedures. Power down and lock out the spindle before loading or removing the tool. Seat the shank fully in the toolholder and torque the retention mechanism per the toolholder manufacturer specifications. Verify runout with a dial indicator before commencing a cut, as excessive runout accelerates tool wear and degrades surface finish.