Cleveland C39053 Square End Mill 1/4 in 2 Flute Hss Ticn

Product Description

The CLEVELAND C39053 is a double-end, square-profile end mill manufactured from high speed steel (HSS) with a titanium carbonitride (TiCN) finish. It features a 1/4 inch cutting diameter, a 3/8 inch length of cut, and a 3/8 inch straight-cylindrical shank with a Weldon flat. The 30-degree spiral flute geometry and two-flute configuration promote chip evacuation and efficient material removal. At 2-7/8 inches overall length, this is a stub-length tool suited for rigidity in tight setups. The TiCN coating adds surface hardness and heat resistance, extending tool life compared to uncoated HSS. Machinists and toolroom operators install this type of end mill on manual mills and CNC machining centers.

This end mill is designed for machining cast iron, non-ferrous metals, and steel. The right-hand cut and right-hand flute orientation are standard for conventional milling operations. The centercutting geometry allows plunge cutting directly into the workpiece, enabling slotting, profiling, and pocket milling without a pre-drilled entry point. Its stub-length body keeps deflection low when cutting harder ferrous materials or taking heavier side loads. Typical applications include general-purpose metalworking in job shops, tool and die operations, and maintenance machining environments.

Key Features

• Double-end design provides two usable cutting ends, extending tool service life
• TiCN coating improves surface hardness and reduces heat buildup at the cutting edge
• Centercutting geometry allows direct plunge entry without a pilot hole
• 30-degree helix angle with spiral flutes for effective chip evacuation
• Straight-cylindrical shank with Weldon flat for positive drive and reduced pullout risk
• Stub length (HD-2 Series) maximizes rigidity and minimizes deflection

Compatibility

Designed for use in standard straight-shank end mill holders and Weldon-style set-screw holders accepting a 3/8 inch shank diameter. Rated for machining cast iron, non-ferrous metals, and steel workpiece materials per Series HD-2 specifications.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the Weldon flat against the set screw in the holder to prevent axial pullout during cutting. Verify runout with a dial indicator after tool installation, especially for finishing passes on tight-tolerance features.