Buying overhead crane is an expensive decision so that the crane is used usually at least to be considered as an option. Obviously it is a cheaper option on the surface, but is it really cheaper? Here are some questions to consider.
Is the manufacturer still in business? There are a lot of consolidation, closures, and bankruptcies in the crane industry. Are you going to be able to get parts for your crane?
Many of the older cranes are a stronger and built-up design that allows you to buy a lot of parts from the shelves because they are becoming the industry-standard components. This applies to motors, contactors, bearings, and couplings to name a few. IF you want to buy a used crane, you can browse https://trtaustralia.com.au/
But, many of the cranes have components that are specifically made for the crane manufacturer and do not use standard components.
You may have to make modifications to the components to make the parts fit retro-fit properly. Many crane manufacturers require special spindle motor, contactors, shoe collector, the electrical system for a couple who may or may not be available names.
What is my liability if I buy a crane and make modifications to it? obligations of manufacturers actually relieved once you modify their crane. Most cranes used will require some kind of re-span that need major mechanical modifications.
If the crane mainly elderly, box girder can be glued beams are difficult to modify, or arch beams on the type of track design patents that have been deemed unsafe. Properly done, an engineer will need to design and put its seal PE of any modification to the bridge girder.
There are a lot of good story cranes used were rehabbed but some caution and preparation need to go to the place to make the right decision.