Expanding-collapsing cylinder for rotation joint

Expanding-collapsing cylinder for rotation joint: used for power lock on thin plate coiler and uncoiler;
rotate with the power lock, with its oil supply parts keeping still.
                             
Common specifications: cylinder diameter between 125 mm and 800mm; cylinder rod diameter between 110 mm and 700mm; cylinder stroke between 15 mm and 500 mm; rotating speed up to 700 rpm.
                  
Model: 360/140-141.14 (including the rotation joint)