SUPERIOR CRANE CORP

BRIDGE CRANES

An overhead crane or bridge crane is a crane with single or multiple girder movable bridge, carrying a movable trolley or fixed hoisting mechanism, and traveling on an overhead fixed runway structure. Bridge cranes are usually your largest capacity crane that entails a parallel runway with a bridge beam(s) spanning the gap between the runway.   The bridge beam(s) is supported on end trucks that ride the runway beams horizontally through your work area(s).  On your bridge beam(s) you have a trolley that runs the beam while a hoist(s) that is supported by the trolley goes up and down by wire rope.  Some types of bridge cranes are top running double girder cranes and underhung single girder cranes.