Testing an Overhead Bridge Crane With Your Own Workpiece
A buyer should require a demonstration using their actual material, not a test weight, and define the load, lift height, and handling checks that will decide acceptance.
Make the demonstration load your own heaviest and most awkward workpiece, not a standard test block. For a single-girder overhead bridge crane with an electric hoist and a 1–20 t lifting capacity range, the buyer should state the workpiece weight, dimensions, rigging points, and required lift height in the request for quotation, then ask the supplier to confirm the crane configuration suits that specific load.
In the demonstration, compare how the hoist starts and stops with the workpiece attached, whether the trolley positions it over the intended work area, and whether the operator can see and control the load. Ask what rigging is assumed and who supplies it. For an acceptance test, agree in advance which workpiece, which positions, and which observations count as a pass.
Before requesting a quote, confirm with the supplier the exact capacity and configuration offered, the hoist and control arrangement, the assumed rigging, and how a demonstration with your workpiece will be scheduled and judged.