A mounting for the road wheel of an automotive vehicle includes a spindle,
a hub located around the spindle and inboard and outboard tapered roller
bearings located between the hub and spindle where they are mounted in
opposition. The cones (inner races) of the two bearings are separated by
a spacer which at its ends is attached to the cones. The spacer holds the
cones together within the hub so that the bearings and hub can be
installed on and removed from the spindle as a unit. The spacer also
establishes the setting for the bearings. In addition, the mounting has a
seal located in the inboard end of the hub. The seal has lips which
establish dynamic fluid barriers along the cone of the inboard bearing
and along an adjacent sealing surface on the spindle without contacting
the cone or spindle. The raceways and rollers for the two bearings have
highly crowned profiles and the hub and the seal within contain an
optimum amount of grease for lubricating the bearings.