Roller bearing seal
View Patent ↗A bearing assembly is provided having a roller bearing with an inner raceway fitted around the journal portion of an axle. An outer raceway combines with the inner raceway to receive roller elements. A backing ring is centered to the shaft fillet. An annular wear ring is positioned between the inner race and the backing ring. An improved lubricant seal arrangement is provided between the wear ring and the supporting outer raceway, and includes a rotor, a seal, a slinger and, in some embodiments, a stator.
1. A bearing assembly comprising:
a bearing cone including an outwardly directed raceway,
a bearing cup including a tapered inward directed raceway located in radially outwardly spaced relation to the bearing cone raceway, and rolling elements located between the inner and outer raceways,
the bearing cup having an inwardly facing cylindrical counterbore,
a wear ring having a cylindrical outer surface,
a seal having a first end portion received in interference relation within the cylindrical counterbore in the bearing cup and a second end portion,
a rotor element of a generally cylindrical shape, the rotor element comprising an outer section, a intermediate section and an inner section,
and a stator element of a generally cylindrical shape, the stator element comprising an outer section, an intermediate section and an inner section,
the outer section of the stator element having an outer surface adjacent the second end section of the seal,
the inner section of the stator element extending between the outer section and the inner section of the rotor element,
and a slinger element of a generally cylindrical shape, the slinger element comprising an outer section and an inner section, the inner section of the slinger element having an outer surface adjacent to the cylindrical outer surface of the wear ring, and the outer section of the slinger element radially outward and adjacent to the second end portion of the seal.
2. The roller bearing assembly of claim 1
wherein the rotor element intermediate section is generally normal to the outer section of the rotor and to the inner of the rotor section to form a channel shaped structure,
and wherein the second end section of the stator element extends into the channel shaped structure.
3. The roller bearing assembly of claim 1
wherein the intermediate section of the slinger extends adjacent to the intermediate section of the stator element.
4. A roller bearing assembly comprising
a cone having an outwardly directed raceway thereon,
a cup having an inwardly directed raceway thereon,
the cup having a generally flat, radially outward face,
the cup having an inwardly facing cylindrical counterbore,
a wear ring adjacent the cone, the wear ring having a cylindrical outer surface,
a seal having a generally cylindrical configuration, the seal including a first end section received in the inwardly facing cylindrical counterbore of the cup,
the seal having an intermediate section and a second end section,
a rotor of generally cylindrical shape, the rotor comprising an outer section, an intermediate section and an inner section,
the inner section of the rotor having an outer surface adjacent to the cylindrical outer surface of the wear ring,
and a stator of a generally cylindrical shape,
the stator having a first end section adjacent the intermediate section of the seal,
the stator having a second end section extending between the outer section and the inner section of the rotor,
and comprising a slinger of a generally cylindrical shape, the slinger element comprising an inner section having an outer surface adjacent the cylindrical outer surface of the wear ring.
5. The roller bearing assembly of claim 4
wherein the rotor element intermediate section is generally normal to the outer section of the rotor and to the inner section of the rotor to form a channel shaped structure,
and wherein the intermediate section of the rotor element has a generally flat outer surface that abuts the generally flat, radially outward face of the cone.
6. The roller bearing assembly of claim 4
wherein the slinger comprises an intermediate section and a second end section,
and wherein the second end section is adjacent the intermediate section of the seal.
7. The roller bearing assembly of claim 4
further comprising a backing ring of a generally cylindrical configuration having a generally flat lateral surface, and wherein the slinger comprises an intermediate section that is adjacent the lateral surface of the backing ring.
8. The roller bearing assembly of claim 4
wherein the rotor is comprised of a polymer material.
9. The roller bearing assembly of claim 4
wherein the stinger is comprised of a steel material or a polymer plastic material.
10. The roller bearing assembly of claim 4
wherein the stator is comprised of a polymer plastic material.