Rotators with self-adjusting heads are ideal when the size of the rotated workpieces varies greatly from piece to piece. Optimal solution to fabricate pressure vessels, pipes, silos, towers. These tank rotators are able to perform automatic adjustment over a wide range of size. The rotator increases the efficiency of both automatic and manual welding. Plays a significant role in reducing the need for crane operations. The rotators with self-adjusting heads usually have a driven and an freewheeling side, that can be customized depending on the demand of customers. In case of very long tanks, pipes the number of driven or freewheeling units can be increased. The rotator can be controlled through a connected welding machine.