Cleveland C33279 Square End Mill 13/16 in 4 Flute Hss Ticn

Product Description

The CLEVELAND C33279 is a 4-flute square end mill designed for precision milling in ferrous and non-ferrous materials. Built from high speed steel (HSS) with a titanium carbonitride (TiCN) coating, it delivers extended tool life under demanding cutting conditions. The 13/16 inch cutting diameter pairs with a 1-7/8 inch length of cut, giving machinists solid material removal in a regular-length form factor. The 30-degree helix angle promotes efficient chip evacuation and reduces cutting forces. This is a centercutting tool, meaning it can plunge directly into a workpiece. It is part of the Cleveland HG-4C series, intended for high-performance milling in production and job-shop environments.

The C33279 is suited for milling cast iron, steel, and non-ferrous metals such as aluminum and copper alloys. Its right-hand cut and right-hand spiral flute configuration is the standard orientation for conventional vertical and horizontal milling machine setups. The straight cylindrical shank with Weldon flat accommodates standard end mill holders and set-screw style tool holders with a 5/8 inch bore. This tool is appropriate for general-purpose profiling, slotting, and peripheral milling operations across a range of workpiece materials.

Key Features

• TiCN coating provides increased surface hardness and reduced friction compared to uncoated HSS
• Centercutting design allows direct plunge entry into workpiece material
• 30-degree helix angle promotes smooth cutting action and chip clearance
• 4 flutes balance material removal rate with chip evacuation capacity
• Straight shank with Weldon flat ensures positive seating in set-screw tool holders
• Right-hand cut and right-hand flute — standard orientation for most milling setups

Compatibility

Designed for use in standard end mill holders with a 5/8 inch bore. Compatible with workpiece materials including cast iron, steel, and non-ferrous metals per the HG-4C series application range.

Installation Notes

Installation and tool changes must be performed with the spindle fully stopped and the machine powered down. Use a calibrated torque wrench on the Weldon flat set screw to avoid under- or over-tightening the holder. Verify runout with a dial indicator after seating the tool before beginning a cut. Follow the machine manufacturer and tooling manufacturer guidelines for appropriate speeds and feeds based on workpiece material and depth of cut.