Another important factor when it comes to selecting your hoist is the rated capacity. For hoists, the rated capacity must be higher than the heaviest load that you expect to be lifted. Also, the structure where the hoist will be suspended, either beam or crane, should also be strong enough for that load.
For electric hoists, determine the capacity by considering the state of loading. There is a criterion called Hoist Classification, in which the state of loading can determine the hoist life. If you choose a higher capacity in comparison to the actual load, the hoist life will be longer, but the initial purchase price will also be higher. The balance between each factor leads you to the best capacity selection for your application.