Underslung travelling cranes are a great option when supporting steel work is not possible and optimum hook coverage is required.


Street underslung travelling cranes, also known as under-hung, under-running or suspension cranes are ideal for factories and warehouse facilities that require lots of free space with no obstructions. They make for flexible production flow and improve safety and accessibility when a process requires floor travelling vehicles as well as cranes. This type of crane runs on track beams forming part of the building roof structure and so does not require supportive floor columns. The crane runs on the lower flange of the track beams, which are suspended from the roof or ceiling.

Other advantages underslung cranes have over top running cranes:


  • Allows for hoists to operate close to the end carriage or end of beam.
  • Allows crane beam to get closer to the factory wall or the end of the crane runway.
  • Introduces the possibility of cantilevered crane beam such that the hoist runs beyond the end carriage and track beam.

Street underslung travelling cranes are available in single girder or double girder construction and in either single span or multi-span configuration. Street has a standard range of pre-engineered single span underslung cranes with spans up to 30m but our multi-span solutions can provide full hook coverage of buildings in excess of 100 m wide. We manufacture underslung cranes with lifting capacities up to 20t however as we explain below our top selling models are 10t and less.


All Street underslung cranes may be specified with a range of optional smart features and software to increase productivity, reduce cycle times, to prevent human error and to monitor and extend the life of the crane. Smart features include load dependent speeds, sway control to limit load swing, over-speed protection, design working period (DWP) monitor and other condition monitoring devices.

To ensure top quality, safety and reliability every crane is subject to both a factory acceptance test (FAT) and a fitness for purpose test site (FFPT) as standard. The FFPT includes dynamic testing at 110% safe working load and proof load testing at 125% safe working load.