When the cranes no circular track and rollers, the carrier is fixedly connected to the crane column by two bearings as far apart as specified (see Figure) the overturning moment of the boom on appropriately arranged
Support bearing and the vertical loads possibly be formed by a comb as a pin
Tracking pins attached to the base to transfer the thrust bearing. For
Receive the bearing are not unless the installation of parts of the building are not permited, strong stand construction is required (see illustration), which enclose the rotating column.