Cleveland C32683 Square End Mill 3/4 in 4 Flute Cobalt

Product Description

The CLEVELAND C32683 is a cobalt square end mill designed for aggressive material removal in demanding machining environments. Built from M42 cobalt high-speed steel and finished with a TiCN coating, it delivers increased hardness and heat resistance compared to standard HSS tooling. The cutter measures 0.75 inches in diameter with a 3-inch length of cut and a 5.25-inch overall length. Its 4-flute, spiral geometry with a 30-degree helix angle promotes efficient chip evacuation and stable cutting performance. Licensed machinists and tool-and-die shops rely on this series for consistent results in long-reach applications.

This end mill is suited for milling operations on high-temperature alloys, stainless steel, and steel. Its long-series geometry makes it appropriate for applications requiring extended reach beyond standard flute lengths. The center-cutting design allows plunge entry, giving operators flexibility for interpolated pocketing, slotting, and peripheral milling in a single setup. The straight cylindrical shank with Weldon flat accommodates standard end mill holders and Weldon-style chucks.

Key Features

• M42 cobalt construction for elevated red hardness and wear resistance
• TiCN finish reduces friction and extends tool life in ferrous and high-temp alloy cuts
• 4-flute spiral geometry with 30-degree helix for efficient chip flow
• Center-cutting capable — supports plunge milling without a pre-drilled hole
• Long-series HGC-4C profile provides extended reach over standard-length tooling
• Right-hand cut, right-hand flute — compatible with conventional CNC and manual mill spindle rotation

Compatibility

Designed for use with standard 3/4-inch end mill holders, Weldon-flat set-screw chucks, and shrink-fit holders bored to 0.75 inches. Primary workpiece materials listed by manufacturer are high-temperature alloys, stainless steel, and steel.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's setup procedures. Ensure the spindle is fully de-energized and locked out before inserting or removing tooling. Verify holder bore concentricity and torque set screws to the holder manufacturer's specification. Confirm correct spindle rotation direction (right-hand) before engaging the cut.