Large-diameter rotary supporting device and ship propeller thereof

The invention relates to a large-diameter rotary supporting device and a ship propeller thereof, the large-diameter rotary supporting device is used for the ship propeller, and the large-diameter rotary supporting device is characterized in that the rotary supporting device comprises a rotary supporting frame in a ring shape, and axial supporting bearings and radial supporting bearings are alternately arranged on the rotary supporting frame at intervals along the ring of the rotary supporting frame. The non-standardized rotary supporting device has the advantages that the non-standardized rotary supporting device is designed, the purpose of large-diameter rotary supporting is achieved in the mode that the integral rotary supporting frame and the small bearing are combined, and compared with an existing integral bearing, the small bearing is low in application cost and can be achieved through various bearing structures in the prior art; the small bearing is light in weight, easy to produce and manufacture and