Hub bearing unit with combination displacement limiter and seal

A hub bearing unit for rotatably coupling a wheel with a vehicle, the hub bearing unit comprising:

• an inner ring having an inboard axial end, an outboard axial end, an outer circumferential surface and a bearing inner race disposed on the outer surface;
• an outer ring disposed about the inner ring and having an inboard axial end, an outboard axial end, an inner circumferential surface and a bearing outer race disposed on the ring inner surface, one of the inner ring and the outer ring being coupled with the wheel so as to be rotatable about a central axis and the other one of the inner ring and the outer ring being fixedly coupled with the frame;
• a plurality of rolling elements rollable upon the inner race and the outer race to rotatably couple the inner ring and the outer ring;
• a generally annular displacement limiter extending radially from the inner ring outer surface or from the outer ring inner surface, the limiter having a circumferential stop surface spaced radially from the outer ring inner surface or from the inner ring outer surface, the stop surface engaging with the outer ring or with the inner ring when one of the inner ring and the outer ring displaces radially relative to the other one of the inner ring and the outer ring;
• and
• a seal including an annular sealing member coupled with one of the inner ring and the outer ring and sealingly engageable with the limiter.

A hub bearing unit for rotatably coupling a wheel with a vehicle, the hub bearing unit comprising:

• an inner ring having an inboard axial end, an outboard axial end, an outer circumferential surface and a bearing inner race disposed on the outer surface;
• an outer ring disposed about the inner ring and having an inboard axial end, an outboard axial end, an inner circumferential surface and a bearing outer race disposed on the ring inner surface, one of the inner ring and the outer ring being coupled with the wheel so as to be rotatable about a central axis and the other one of the inner ring and the outer ring being fixedly coupled with the frame;
• a plurality of rolling elements rollable upon the inner race and the outer race to rotatably couple the inner ring and the outer ring;
• a generally annular displacement limiter extending radially from the inner ring outer surface or from the outer ring inner surface, the limiter having a circumferential stop surface spaced radially from the outer ring inner surface or from the inner ring outer surface, the stop surface engaging with the outer ring or with the inner ring when one of the inner ring and the outer ring displaces radially relative to the other one of the inner ring and the outer ring;
• and
• a seal including an annular sealing member disposed on the limiter and sealingly engageable with at least one of the inner ring, the outer ring and a rigid seal member coupled with one of the inner ring and the outer ring.