SINGLE GIRDER OVERHEAD Travelling Crane
The crane consists of a single bridge girder supported on two end trucks. The trolley runs on the bottom flange of the bridge girder. Generally, they are preferred for capacities under 16 tons and span values below 25 meters. They are more economical as compared with double girder cranes in standard applications. For maintenance, additional equipment (such as ladder, platform etc.) is needed.
OVERHEAD CRANE
DOUBLE GIRDER OVERHEAD Travelling Crane
On a double girder crane, there are two girder beams that make up the bridge and they’re supported by an end truck on each side. In most instances, the trolley and hoist run on a rail installed on top of the bridge girders.
