Small-size high-load automobile hub unit

The utility model relates to the technical field of automobile hubs, in particular to a small-size high-load automobile hub unit which comprises a hub body and is characterized in that the hub body comprises an inner ring piece, an outer ring piece connected with the inner ring piece in a sleeved mode is arranged on one side of the inner ring piece, an outer ring flange plate is installed on the outer ring piece, and an inner ring flange plate is installed on the outer ring flange plate. A magnetic sealing ring assembly is arranged between the inner ring piece and the outer ring piece, a cavity is formed between the inner ring piece and the outer ring piece, the magnetic sealing ring assembly is arranged on one side of the cavity, a lower sealing ring assembly is arranged on the other side of the cavity, and a center flange plate is arranged in the center of the inner ring piece. Compared with common products in the market, the hub unit is smaller in size, the installation space in the hub unit can be effecti