It is therefore very important to evaluate information regarding crane performance at the time of purchase, asking the seller to declare, ideally in writing, the capacity conditions. What appears to be an advantage is however in reality a limit, although this is only indicated in the use and maintenance manuals. Static curves express the positions at which the lifting moment limiting device is triggered, so that the points in the curves are only reached by load extension (translation) and not by lifting! Indicating a static curve its possible to show values 10% higher than what the same crane model can actually lift in dynamic conditions. These documents, instead of referring to dynamic load performance, express static load performance, that is to say not related to actual lifting capacity. However, the fact that on the market there are other graphic and numeric models used to represent capacity data may generate misunderstandings and confusion. As you will see, the indications aim to provide the most precise and truthful information on the real dynamic load performance, that is to say the direct ratio between liftable load and the distance from the crane column.ĪTTENTION! ALWAYS EXPECT MAXIMUM CLARITY IN THE INFORMATION PROVIDEDįassi lifting capacity charts indicate dynamic values: the nominal loads are liftable at any point of the diagram and the reaches take into consideration deformation of the crane structure. In the diagram published below we have summarized the meanings of the different elements present in a Fassi lifting capacity chart, outlining the main points for a correct reading. Being able to read a lifting capacity chart properly means that, when evaluating purchase, you will have a proper knowledge of how much this crane can actually do. The lifting capacity chart expresses the potential of a crane: the load size that it can lift according to the distance. THE GRAPHICS AND VALUES EXPRESSED IN FASSI CRANE LIFTING CAPACITY CHARTS ARE A FURTHER REASON FOR COHERENCE, BECAUSE ON THE MARKET SOME CHARTS ARE BETTER THAN OTHERS How to Read & Interpret Charts – Fassi Cranes
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