Parts of A Crane

While a Double or Multiple Girder Crane can be broken down into 4 main parts or components, understanding the intended purpose, specifications and aspects of each is crucial.

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Parts of a Double / Multiple Girder Crane

In the following example, we highlight each of the primary components of a Double Girder Crane. Simply click on any of the blue icons to learn more.

End Truck

The unit consisting of truck frame, wheels, bearings, axles, etc., which supports the bridge girders.

Bridge Girder

The main horizontal structural member(s) of the crane bridge supported by the end trucks.


A mechanism used for lifting and lowering a load.


The unit carrying the hoisting mechanism which travels on the bridge rails.

Trolley Frame

The basic structure of the trolley on which are mounted the hoisting and traversing mechanisms.

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