The safe working load must be selected according to each application. Although the effort to move the crane bridge is small it can be further reduced by selecting the lightest size/weight of system to suit the application i.e for 400kg maximum load normally select a 500kg capacity system and not 1000kg. Available options: - 125kg, 250kg, 500kg, 1000kg, & 2000kg Gantry Track Length (GTL) is determined by the specific area requiring lifting coverage. Gantries have Support Centres upto a maximum of 9m detremined by the system size selected and your system requirements. The option to choose your own support centres is offered during the selection process. Crane Bridge Span (CBS) is the distance between the centres of the gantry tracks. The Crane Bridge Length (CBL) is the overall length. Crane In A Box offers crane bridge lengths upto 10m depending upon system size. The Crane In A Box® design provides a stansard crane bridge overhang of 300mm on each end, beyond the gantry track. In order to reduce the operation resistance to an absolute minimum we recommend that the trolley Load Pin Height (LPH) be kept to as low as possible with practical considerations applied to minimum headroom requirements. Height LPH is measured from the floor to the trolley load pin from which a hoist / lifting device is suspended.