The self-adjustable rotator can be aligned by itself according to the size of the tank diameter.Its two plier-shape racks can revolve along shaft,to accommodate work-piece of various diameters.Usually it is used in the form of one group,including one powered and one idler;we also can supply several idler rollers in accordance with the customer’s requirement.              The distance between the two rollers of adjustable welding rotator can be adjusted by manual control of lead-screw or bolt shift,to accommodate work-piece of various diameters.This equipment features in good adaptation,smooth revolve,VF adjustable revolve speed and displaying revolve linear speed.