Capacity is one of the biggest factors that affect the total cost of an overhead crane, which refers to the maximum allowable lifting load of the crane. The lifting capacity of the bridge crane can be 5t, 10t (single hook), 15t/3t, 20t/5t, 30t/5t, 50t/10t, 75t/20t, 100t/20t, 125t/20t, 150t/30t, 200t/30t, 250t/30t (double hook), .