Crane load capacity refers to the maximum weight a crane can safely lift under specific operating conditions. This varies with the crane setup and must remain within the manufacturer’s guide capacity.

Load Weight: Includes the weight of the load being lifted along with all lifting accessories, such as slings, shackles, hooks, and lifting beams.

Lifting Radius: As the distance between the crane and the load increases, the crane’s lifting capacity decreases.

Boom Length and Angle: The further the boom extends or the lower its angle, the less weight the crane can safely lift.

Crane Configuration: A properly configured crane—with outriggers fully deployed and the correct counterweights—provides better stability and safer lifting.
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Formula: Required Crane Capacity = (Gross Load × Dynamic Factor) ÷ 0.75

Always ensure the planned lift remains within the crane manufacturer’s rated capacity and site lifting procedures.

The crane load chart is a manufacturer-issued guide that shows the maximum weight a particular crane model can safely carry, depending on several factors. It helps operators plan each lift by considering factors such as the boom length, lifting radius, and crane setup.

Suppose there is a crane that needs to lift a generator weighing 15 tons at a radius of 12 meters. Prior to the lifting operation, the operator refers to the load chart and finds out that the crane is capable of lifting 15.5 tons at that radius. This is a safe lifting limit for the crane.

By precisely calculating the load that the crane can lift, comparing it to the crane load chart, and using the information obtained from Green World Group’s lifting safety training, you can conduct safe and efficient lifting.

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