Marine rolling intermediate bearing refers to an intermediate bearing in which the shaft rotates within the bearing and experiences rolling friction. It is a type of bearing used to support the intermediate shaft in the ship's transmission system. In ship transmission systems, there are usually multiple shafts, one of which is the intermediate shaft, responsible for transmitting power and torque from the main engine to propulsion devices or other auxiliary equipment. The marine rolling intermediate bearing is located on the intermediate shaft, supporting and enabling it to rotate with high efficiency and stability.