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How are cranes rated? Most cranes, including crawler cranes, are rated at a specific capacity at a fixed distance (radius) This capacity rating is typically specified in tons for main boom only at a 10ft (3m) radius from the centerline of the superstructure, but it may vary from around 8-12ft, depending on the machine and manufacturer

Capacity

NOTE: A 100-ton crane rated at 10ft is theoretically stronger than a 100-ton crane rated at 8ft A crane will rarely – if ever – lift its rated capacity

Radius

2

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