Why do cranes in Japan bear different type designations than elsewhere?
The answer to this question is closely related to the answer to the question “Why do cranes in the USA and Japan appear to be able to lift more?”. Since manufacturers use to name cranes according to their maximum lifting capacity, the type designations are changed to the heigher stroke load values (as discussed below) to match the practice on the Japanese market. To denote this special designations, Liebherr adds a “N” (for “Nippon”) and Demag a “J” (for “Japan”) to the crane names.