During crane operation, what governs the maximum load capacity when the radius is adjusted?

The maximum load capacity during crane operation when adjusting the radius is governed by the load chart provided by the manufacturer. This load chart is a critical document that specifies the safe working loads for different configurations of the crane, including boom length, angle, and the various radii at which loads can be lifted. The load chart takes into account the engineering design and safety factors considered by the manufacturer to ensure that the crane operates within safe limits.

In practice, as the radius increases (meaning that the load is being lifted farther from the center of the crane), the maximum load capacity decreases. This reduction is specifically outlined in the load chart, which allows operators to determine the appropriate load limit for any given radius and configuration. Understanding and referring to this chart is essential for safe operations, preventing overloading, and ensuring the stability of the crane during lifts.

Other factors, such as the length of the boom, the type of crane, and ground conditions, can affect operational capabilities or safety, but the definitive source for maximum load capacity in relation to radius adjustments is always the manufacturer’s load chart.