The wheel hub winds the wire rope, with its forged hub connected to the drum barrel. It must transmit torque from the hoisting motor while withstanding the tensile forces of the wire rope.
Forging ensures: Zero internal porosity for maximum structural integrity Superior torsional strength (typically 20-30% higher than cast equivalents) Fail-safe operation under dynamic loads (rated for SWL up to 500t in heavy-duty cranes)