// multi-utility computation suite · offline · instant · precise
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eng.crane-lift-capacity Calculator
Calculates crane lift capacity from boom angle, radius, and counterweight using the moment equilibrium approach. Crane capacity varies dramatically with radius — a crane rated 50t at 5m may only lift 10t at 20m radius.
Inputs
Radius M
Distance from centre to edge of a circle. Radius = diameter / 2.
Boom Angle Deg
Reference formula or conversion factor shown for context.
Swl At Min Radius T
Distance from centre to edge of a circle. Radius = diameter / 2.
Min Radius M
Distance from centre to edge of a circle. Radius = diameter / 2.
Results
SWL at radius R (t)
The computed radius -- half the diameter.
rated moment (t·m)
The value at the specified point or condition.
tip height estimate (m)
The computed height.
load chart principle
Sample size or count used in the calculation.
de-rating required
A standardised quality or risk rating on the applicable scale.
safety note
Supplementary information explaining an assumption, caveat, or important context for interpreting the result.