Cleveland C33180 Square End Mill 1 in 4 Flute Hss HG-4C

Product Description

The CLEVELAND C33180 is a 4-flute, single-end square end mill designed for material removal and profiling in ferrous and non-ferrous machining applications. Built from high speed steel (HSS), it features a 1 inch cutting diameter, a 1-7/8 inch length of cut, and a 7/8 inch straight-cylindrical shank with a Weldon flat for secure tool holding. The 30-degree spiral flute geometry promotes efficient chip evacuation, while the uncoated HSS construction makes it well-suited for general-purpose shop use. This tool is centercutting, allowing direct plunge entry without a pre-drilled hole. Overall length is 4-1/8 inches. Machinists and tool-and-die professionals are the primary users.

The C33180 is rated for primary workpiece materials including cast iron, non-ferrous metals, and steel. It fits conventional vertical milling machines, manual knee mills, and CNC machining centers with appropriate collet or end mill holders accepting a 7/8 inch shank. The regular-length profile makes it a standard choice for face milling, slotting, and peripheral profiling where extended reach is not required. It is part of the Cleveland HG-4C series, which targets general-purpose HSS end milling across a broad range of shop materials.

Key Features

• 1 inch cutting diameter with 1-7/8 inch length of cut
• 4 flutes with 30-degree right-hand spiral for efficient chip removal
• Centercutting geometry enables direct plunge milling
• High speed steel construction, uncoated, for general-purpose use
• 7/8 inch straight-cylindrical shank with Weldon flat for positive drive
• Right-hand cut and right-hand flute orientation

Compatibility

Designed for use in milling machine spindles and CNC machining centers accepting a 7/8 inch straight shank. Rated for cast iron, non-ferrous metals, and steel workpiece materials per Cleveland HG-4C series specifications.

Installation Notes

Installation should be performed by a qualified machinist following standard tooling setup procedures. Ensure the spindle is fully powered down and at rest before changing tooling. Secure the shank in a compatible end mill holder or collet to the full recommended engagement depth, utilizing the Weldon flat to prevent pull-out under load. Verify runout with a dial indicator before cutting to protect both the tool and workpiece.