Factory Acceptance Checks for an Overhead Bridge Crane
A buyer's guide to defining pass or fail checks for a single-girder overhead bridge crane with electric hoist, covering load test records, travel and hoist function, and documentation to confirm before quoting.
Before signing off a factory acceptance test for a single-girder overhead bridge crane with an electric hoist, decide which checks are pass or fail and which are merely recorded. For a crane rated within the 1–20 t lifting capacity range and intended for heavy loads, ask the supplier to state the test load and how it will be applied, then require the result to be written down rather than observed only.
Build the acceptance list around observable functions: bridge travel, trolley movement, hoist raise and lower, and the holding brake. For each, define a pass condition in advance, such as smooth operation without binding or abnormal noise, and a fail condition that stops acceptance. Ask whether limit devices and emergency stopping will be demonstrated, and whether the demonstration is under load or empty.
Separate structural and electrical checks from performance checks. Request that the supplier identify which measurements are recorded as reference values and which are acceptance criteria. If a catalog figure is offered, treat it as a reference value for the model family, not a guarantee for the crane you receive.
Before requesting a quote, confirm with the supplier which tests will be witnessed, what records will be issued, how nonconformities are closed, and whether the test load and acceptance criteria are fixed in the purchase order.