Widia 2870202 Square End Mill 1/8 in 4 Flute Solid Carbide

Product Description

The WIDIA 2870202 is a solid carbide square end mill designed for high-performance material removal in demanding machining environments. It features a 1/8 inch cutting diameter with a 1/4 inch length of cut and a 38-degree helix angle that promotes efficient chip evacuation and reduces cutting forces. The four-flute, right-hand cutting configuration is paired with a TiAlN-LT coating, which improves thermal resistance and extends tool life when cutting at elevated temperatures. With a 1-1/2 inch overall length and a straight cylindrical shank, this end mill is suited for CNC machining centers and manual mills where compact tooling is required.

This end mill is intended for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials, making it a practical choice for mold and die work, aerospace component machining, and general precision part production. The Series 4V05 designation places it within a purpose-built line for difficult-to-machine alloys and high-temperature materials. It is centercutting, allowing direct plunge entry without a pre-drilled pilot hole. Typical users include CNC machinists and tool-and-die professionals working in job shops or production environments.

Key Features

• 1/8 inch cutting diameter with 1/4 inch length of cut for small-feature and slot milling
• TiAlN-LT coating for improved heat resistance and tool life in high-temperature alloy cutting
• 38-degree helix angle promotes chip flow and reduces cutting forces
• Four right-hand flutes with helical flute geometry for smooth surface finish
• Centercutting design enables direct plunge milling without a pilot hole
• Straight cylindrical shank at 1/8 inch diameter for standard collet compatibility

Compatibility

Designed for machining steel, stainless steel, cast iron, superalloys, titanium, and hard materials. Primary workpiece material codes P, M, K, S, and H. Secondary workpiece material is high-temperature alloy (code S). Part of the WIDIA Series 4V05 end mill line.

Installation Notes

This tool should be installed by a qualified machinist following standard toolholding procedures. Ensure the machine spindle is fully powered down and locked out before changing tooling. Secure the shank in a properly sized collet or end mill holder to the recommended clamping torque specified by the toolholder manufacturer. Verify runout before initiating a cut, as excessive runout will accelerate wear and reduce dimensional accuracy.