Cleveland C40077 Square End Mill 1/2 in 3 Flute Powdered Metal

Product Description

The CLEVELAND C40077 is a square end mill designed for precision milling of non-ferrous metals in professional machining environments. Built from powdered metal and finished with a titanium carbonitride (TiCN) coating, this tool delivers improved wear resistance and surface hardness over standard high-speed steel. It features a 0.5 inch mill diameter, a 1.25 inch length of cut, and a 3.25 inch overall length. The 42-degree helix angle promotes efficient chip evacuation. Three spiral flutes with a right-hand cut and right-hand flute direction make this a centercutting, single-end tool suited for machinists working on CNC mills and manual knee mills alike.

This end mill is intended for milling non-ferrous metals, including aluminum, brass, copper, and similar materials classified under workpiece material code N. It is configured as a regular-length tool with a straight cylindrical shank incorporating a Weldon flat for positive drive in standard end mill holders. The PM-539R series designation places it in Cleveland's powdered metal product line, a category commonly specified where longer tool life is required at moderate to high cutting speeds in production and job shop environments.

Key Features

• Powdered metal construction provides greater wear resistance than conventional HSS
• TiCN coating extends tool life and reduces heat buildup at the cutting edge
• 42-degree helix angle promotes efficient chip flow on non-ferrous materials
• Centercutting geometry allows direct plunge entry without a pilot hole
• Weldon flat on straight cylindrical shank prevents tool pullout under load
• Right-hand cut and right-hand flute direction for standard spindle operation

Compatibility

Designed for use in standard 0.5 inch end mill holders, collet chucks, and Weldon-style set-screw holders on CNC machining centers and manual milling machines. Primary workpiece material is non-ferrous metal (material code N).

Installation Notes

Installation should be performed by a qualified machinist following standard toolroom procedures. Ensure the spindle is fully stopped and the machine is powered down before loading or changing the tool. Seat the shank fully into the holder and align the Weldon flat with the set screw before tightening. Verify runout with a dial indicator after mounting to confirm concentricity before beginning a cut.