Cleveland C31181 .5 in 4-flute cobalt roughing end mill

Half-inch Cobalt Roughing End Mill

The Cleveland C31181 is a half-inch diameter roughing end mill with four flutes and eight percent cobalt content. Its square profile and coarse pitch are designed for rapid stock removal in milling operations. The tool features a Weldon flat on the half-inch shank for secure clamping in standard holders. Overall length is three and a quarter inches with a one and a quarter inch length of cut.

For Heavy Roughing in Ferrous Materials

This cutter suits machinists who need aggressive material removal in steel or other ferrous alloys using a rigid setup. The uncoated cobalt substrate handles high cutting forces but lacks the heat resistance of coated alternatives for very high-speed passes. Shops requiring fine finish passes, non-ferrous machining or coolant-through capability should select a different tool geometry or coating.

Weldon Shank for Standard Holders

The half-inch Weldon shank fits directly into common end mill holders and collets without adapters. A machine spindle capable of accepting a half-inch shank and sufficient rigidity to manage coarse-pitch cutting forces are required. The three and a quarter inch overall length provides standard reach for general pocketing and profiling, freeing the user from sourcing extended-length tooling for typical depths.