Size: Length: 13mm/0.51"; Width: 5mm/0.2"; Thickness: 4mm/0.16". Material: Made of #45 carbon steel, it has higher hardness; Finish: Polished. Feature: The Woodruff keys is a semi-circular disc and fit into a circular recess in the shafts, which is machined by a Woodruff keyway cutter. These Woodruff keys are mostly used in machines, tools & shafts.. Advantage: More precise fit of the key and also reduces keyway play and stress concentrations, and improves the reliability of the key.. Application: Woodruff is commonly used in machine tools, for example, between the flywheel and crankshaft of a small internal combustion engine, where the drive depends largely on the fit between the shaft and the cone-bored flywheel hub..
