Abstract: A first vehicle wheel bearing has a monolithic shaft including two inner races and has a monolithic outer race assembly. A second bearing has a monolithic shaft including a shoulder and at least one inner race, wherein the shaft is positioned within the bore of a vehicle knuckle member with the shoulder abutting the knuckle. A third bearing has an end cap attached to an outer race assembly and covering the bearing-cavity outboard opening. A fourth bearing has an inboard seal covering the bearing-cavity inboard opening and extending outside the cavity to define a target ring for an ABS speed sensor. A fifth bearing has an ABS speed sensor positioned in the bearing cavity and attached to a shaft proximate the outboard opening and has a target ring positioned in the bearing cavity and attached to the outer race assembly.

Abstract: A two row, angular contact, separable race ring wheel bearing is given increased load capacity by maximizing the sizes of the two ball rows within the available annular envelope available between the inner spindle and outer hub. The two pathways for the outboard ball row, the first installed ball row, are ground right out to the radial limits of the envelope, allowing the diameter of the outboard ball row to be as large as possible, and larger than the inboard ball row. The larger diameter of the one ball row increases load capacity with no other significant change in the design of the bearing.

Abstract: The relative speed of the tires of a vehicle is monitored as an indication of the operating state of the vehicle, wherein if the vehicle is not operating in one of a number of predetermined states, the relative speed is monitored as an indication of relative pressure of the vehicle tires, and further wherein differences in relative speed not related to the predetermined states, and not related to differences in relative pressure, are accounted for.

Abstract: A pneumatic check valve actuator assembly for a tire pressure management system uses a snap action disk to provide quick and positive on-off response.

Abstract: A wheel end assembly used with a tire pressure management system has a pressurized air passage formed in part by the annular clearance space formed between a drive shaft and a central bore in the tire mounting spindle of the end assembly.