To significantly improve efficiency of a connection step by significantly reducing dwell time.

There is provided a method for connecting a structural element (1) onto a shaft (2). In the method, on the shaft (2), prior to actual connection, at least one projection part (6) which is a kind of a material rising part is formed at respective connection parts (5) on the shaft (2). Then, the structural element (1) is slidable onto at least one projection part (6), and until connection work is completed, held by the projection part (6).