4. Definition of Terms
1. Rated weight
The rated weight is calculated based on the boom length and
angle of the crane, including the heavy weight of lifting accessories
such as slings.
2. Working radius（R）
Working radius refers to the horizontal distance from the center
of the swing to the center of the hook.
3. Boom length（L）
The distance between the king pin hole of the boom and the pin
hole of the pulley at the tail of the boom.
4. Angle of boom（A）
The angle formed between the boom and the horizontal plane.
5. Lifting height（H）
Lift the hook to the highest point, between the bottom of the
hook and the ground vertical distance.
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