Double-row angular contact ball bearing

The utility model relates to a double-row angular contact ball bearing, which belongs to the field of bearings. The prior double-row angular contact ball bearing has the defect that a sealing ring is easy to fall off. The utility model is characterized in that a sealing ring mechanism comprises a sealing cover the section of which is L-shaped and a dustproof cover the section of which is U-shaped; one supporting leg plate of the sealing cover is embedded in the inner surface of an outer ring, while the other supporting leg plate is close to a steel bead; one supporting leg plate of the dustproof cover is sleeved with an inner ring; the sealing cover and the dustproof cover are opposite to form a sealing cavity; a sealing ring is arranged in the sealing cavity; and the sealing ring is provided with a plurality of contact lips which are respectively prop against the cavity wall of an inner cavity and the other supporting leg plate of the dustproof cover, so that the sealing ring cannot fall off and the better s