Bearing unitized for handling

An antifriction bearing for facilitating rotation about an axis, said bearing comprising:

• a cone having a tapered raceway that is presented outwardly away from the axis;
• a cup surrounding the cone and having a tapered raceway that is presented inwardly toward the raceway of the cone and also a thrust rib provided with a confining surface located at the large end of its raceway;
• tapered rollers arranged in a single row between the cone and the cup and contacting the raceways along their tapered side faces and the confining surface at their large ends;
• a cage having end rings extended across the large and small ends of the rollers and bridges extended between the end rings, all to define pockets which receive the rollers;
• another confining surface at the small ends of the tapered rollers;
• a backing collar at the end of the cone at which the other confining surface is located and being engaged with the cage so that the backing collar is retained at the end of the cone.

In combination with an axle housing and with an axle shaft located within the axle housing and having a flange located beyond the end of the housing, a shoulder behind its flange, and a bearing seat leading up to the shoulder;

• a single row tapered roller bearing located between the housing and around the shaft for enabling the shaft to rotate in the housing about an axis of rotation and for confining the shaft axially in the housing, said bearing comprising:
• a cup secured to the axle housing and having a tapered raceway that is presented inwardly toward the axis and a confining surface at the large end of the raceway;
• a cone located around the bearing seat on the axle shaft and against the shoulder on the shaft, the cone having a tapered raceway that is presented outwardly toward the raceway on the cup;
• tapered rollers organized in a single row between the cup and cone and having their tapered side faces against the raceways and their large ends against the confining surface on the cup;
• a cage located between the raceways and having pockets which receive the tapered rollers;
• and a backing collar fitted over the bearing seat with an interference fit such that the cone is captured between the shoulder of the axle shaft and the backing collar, the backing collar having another confining surface located opposite the small ends of the tapered rollers, the backing collar being interlocked with the cage such that the collar cannot be displaced axially with respect to the cage and rollers, but the cage can rotate relative to the collar.