Load capacity charts for crawler cranes are based on what percentage of tipping capacities?

Load capacity charts for crawler cranes are typically based on 75% of the tipping capacities. This percentage is determined to ensure a safety margin during operations. By using 75% of the tipping capacity, operators can account for various dynamic factors that may affect stability, such as wind, ground conditions, and load dynamics during lifting. This conservative approach enhances safety by reducing the risk of tipping over during crane operation, thus promoting a safer work environment.

The choice of 75% allows for a balance between operational capability and safety, ensuring that cranes are used within a safe limit. The other percentages, while they may reflect operating capacities in some contexts, do not provide the same level of safety assurance that is standard for crane operation practices.