Glossary


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1) Truss girder crane

An overhead traveling crane designed with structurally reinforced bridge girders to allow greater span and loading capabilities.  The reinforcement consists of utilization of trusses extended vertically and horizontally from the load bearing beam(s) of the crane bridge.

2) Single girder crane

An overhead traveling crane that utilizes a single bridge beam attached to the two runway/end trucks.  This bridge beam or single girder supports a lifting mechanism or hoist that "runs" on the bottom flange of the bridge beam.

3) Top running crane

An electric overhead traveling crane having the end trucks supported on rails attached to the top of the crane runways.

4) Underhung crane

An electric overhead traveling crane having the end trucks supported on track attached to the bottom flanges of the beam; or supported on bottom flanges of beams.  These beams make up the crane runway.

5) Under running crane

An electric overhead traveling crane having the end trucks supported on track attached to the bottom flanges of the beam; or supported on bottom flanges of beams.  These beams make up the crane runway.