Waterproof and antirust sealing self-aligning roller bearing

The invention relates to a waterproof and antirust sealing self-aligning roller bearing; an inner sealing groove and an outer sealing groove are formed in one side of an outer ring of the bearing, the outer sealing groove is formed in the outer diameter, and the inner sealing groove is formed in a spherical surface; the seal arranged at the inner sealing groove comprises a gasket, a first sealing ring and a clamping ring structure, and the seal arranged at the outer sealing groove comprises an outer framework and a second sealing ring structure wrapping the outer framework. A second sealing ring (07) is arranged on the outer diameter of the outer ring of the bearing to prevent rainwater, external impurities and corrosive gas from entering the bearing and guide the rainwater, the external impurities and the corrosive gas to be discharged, and meanwhile, the first sealing ring is arranged in the bearing; a small amount of rainwater, external impurities and corrosive gas are prevented from directly entering the