Top Running Crane
A top running crane, often referred to as an overhead crane, is a type of non-mobile crane used primarily in industrial settings to lift and move heavy loads within a designated rectangular area. It consists of a movable bridge that travels along parallel runways installed at an elevated position, usually attached to the building’s structure. A hoist and trolley mechanism is mounted on the bridge, allowing the load to be moved in three axes, Vertical, Lateral & Longitudinal.
Top Running Crane Types We Supply
Top running cranes come in various configurations to suit different capacities and facility designs:
Single Girder: Features one main bridge beam; generally more cost-effective and used for lighter to medium-duty applications
Double Girder: Features two parallel bridge beams; offers greater capacity, stability, and often provides more lift height (hook height)
Top Running: The bridge travels on rails placed on top of the runway beams
Under Running (or Underhung): The bridge hangs from the bottom flange of the runway beams, which can maximize floor space and headroom.
Key components for top running cranes
Runways Parallel beams or rails, typically mounted to the building structure, on which the bridge travels along the length of the work area.
Bridge The main horizontal beam(s) spanning the width of the work area. It connects the two runways and supports the trolley and hoist.
End Trucks Located on either side of the bridge, these contain wheels that allow the bridge to travel along the runways.
Trolley A mechanism that rides along the bridge and carries the hoist, providing lateral (side-to-side) movement.
Hoist The lifting unit that uses a chain or wire rope to raise and lower the load.
