Abstract: A mobile crane comprising a chassis, which has at least two axles and on which a revolving superstructure is movably mounted by means of a slewing bearing consisting of an outer ring and an inner ring, a preferably telescopic boom, which is pivoted to the revolving superstructure and which is adapted to be supported on a supporting bracket of the crane in position for road travel, and a cabin for use during crane and road travel operations. A carrying ring is rotatably mounted on that ring of the slewing bearing which is connected to the revolving superstructure, the cabin is secured to said carrying ring, and the cabin or the carrying ring can selectively be connected either to the chassis or to the revolving superstructure.