A purgeable labyrinth axle/hub seal for a motor vehicle with an axle annular member that attaches to an end portion of an axle and a hub annular member that attaches to a wheel hub and matingly connect for defining a cavity that receives grease and a labyrinth gallery for a grease path from the cavi
A purgeable labyrinth axle/hub seal for a motor vehicle with an axle annular member that attaches to an end portion of an axle and a hub annular member that attaches to a wheel hub and matingly connect for defining a cavity that receives grease and a labyrinth gallery for a grease path from the cavity, to seal the connection of the axle and hub from water, dirt and other contaminants.
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1. A purgeable labyrinth axle/hub seal, comprising: a first annular member and a second opposing annual member, the first annular member and the second annular member each comprising:a ring having a first edge and a second edge; anda flange disk attached to the ring and extending therefrom to a dist
1. A purgeable labyrinth axle/hub seal, comprising: a first annular member and a second opposing annual member, the first annular member and the second annular member each comprising:a ring having a first edge and a second edge; anda flange disk attached to the ring and extending therefrom to a distal edge, the ring extending laterally from the flange disk;means for attaching the first annular member to an end of an axle;means for attaching the second annular member to a wheel hub attached to the axle in facing relation to the first annular member so that the opposing first and second annular members define a lubricant gallery therebetween;a fitting for communicating a lubricant into the lubricant gallery; anda seal member disposed between the first and second annular members and cooperatively defining a labyrinth path from the lubricant gallery,whereupon lubricant communicates through the labyrinth path outwardly of the seal member during rotation of the first annular member relative to the second annular member. 2. The purgable labyrinth axle/hub seal as recited in claim 1, wherein a portion of the first annular member has a first character and a portion of the second annular member has a second character, which first and second characters cooperatively define the labyrinth path. 3. The purgable labyrinth axle/hub seal as recited in claim 2, wherein the seal member comprises a resilient pad received on the ring of the first annular member, the resilient pad defining a channel as the first character that receives the ring of the second annular member as the second character with a gap therebetween for defining the labyrinth path. 4. The purgable labyrinth axle/hub seal as recited in claim 3, wherein the resilient pad comprises urethane. 5. The purgable labyrinth axle/hub seal as recited in claim 2, wherein the fitting attaches to the first annular member. 6. The purgable labyrinth axle/hub seal as recited in claim 1, wherein the seal member comprises an annular ring that defines a groove on a first side for receiving the ring of the first annular member and a channel on an opposing side for receiving the ring of the second annular member. 7. The purgable labyrinth axle/hub seal as recited in claim 6, wherein the seal member comprises urethane. 8. The purgable labyrinth axle/hub seal as recited in claim 1, wherein the first annular member comprises a pair of U-shaped members, each U-shaped member having a cross bar for being disposed transverse to a longitudinal axis of the axle and a pair of legs extending in a first direction at respective opposing ends of the cross bar, each leg having a lateral flange that defines an opening, whereby the U-shaped members mount on opposing sides of the axle with the flanges aligned with a respective one of the flanges of the opposing member and for receiving a respective fastener through the aligned openings in the flanges to rigidly secure the U-shaped members axle mount to the axle. 9. The purgable labyrinth axle/hub seal as recited in claim 1, wherein the wheel hub further comprises a hub plate and a plurality of threaded studs extending therefrom for attaching a wheel to the wheel hub, each stud defining a tapped bore through the hub plate; andthe flange disk of the second annular member defining a plurality of openings that align with the threaded studs of the hub plate; anda plurality of threaded fasteners, each for extending through a respective one of the openings in the hub flange disk and engaging the aligned tapped bore,whereby the second annular member rigidly attaches to the wheel hub. 10. A purgeable labyrinth axle/hub seal, comprising: a first annular member having a ring with a first edge and a second edge;a flange disk attached to the first edge of the ring with the ring extending latterly from the flange disk; andmeans for attaching the first annular member to an axle;a second annular member having a ring with a first edge and a second edge;a flange disk attached to an outer surface of the ring intermediate the first edge and the second edge with the flange disk extending laterally therefrom; andmeans for attaching the second annular member to a wheel hub attached to the axle with the respective second edges of the first annular member and the second annular member in facing relation;a lubricant gallery defined thereby between the first annular member and the second annular member;a fitting for communicating a lubricant into the lubricant gallery; anda resilient pad disposed between the first and second annular members and cooperatively defining a labyrinth path,whereupon lubricant communicates through the labyrinth path outwardly of the seal member during rotation of the second annular member relative to the first annular member. 11. The purgable labyrinth axle/hub seal as recited in claim 10, wherein the resilient pad defines a first channel of a first character that receives the ring of the first annular member and an opposing second channel of a second character that receives the ring of the second annular member. 12. The purgeable labyrinth axle/hub seal as recited in claim 11, wherein the first character defines a gap between respective walls of the channel and the ring received therein for defining the labyrinth path. 13. The purgable labyrinth axle/hub seal as recited in claim 10, wherein means for attaching the first annular member comprises: a pair of mounting members, each mounting member having a cross bar for being disposed transverse to a longitudinal axis of the axle and a pair of legs extending in a first direction at respective opposing ends of the cross bar, each leg having a lateral flange that defines an opening,whereby the mounting members mount on opposing sides of the axle with the flanges aligned with a respective one of the flanges of the opposing mounting member and for receiving a respective fastener through the aligned openings in the flanges to rigidly secure the mounting members to the axle; andmeans for securing the mounting members to the first annular member. 14. The purgable labyrinth axle/hub seal as recited in claim 13, wherein the first ring in the first annular member comprises a pair of semi-circular members and the flange disk in the first annular member comprises a pair of semi-circular plates, each semi-circular plate attached to a respective one of the semi-circular members, and each of the mounting members attached to a respective one of the semi-circular members. 15. The purgable labyrinth axle/hub seal as recited in claim 10, wherein the means for attaching the second annular member comprises a second ring attached to an outer edge of the flange disk and a second flange disk attached to an outer surface of the second ring intermediate opposing edges thereof and extending therefrom to a distal edge, the second flange disk defining a plurality of spaced-apart openings for receiving fasteners therethrough for attaching the second annular member to the wheel hub. 16. The purgable labyrinth axle/hub seal as recited in claim 15, wherein the wheel hub further comprises a hub plate and a plurality of threaded studs extending therefrom for attaching a wheel to the wheel hub, each stud defining a tapped bore therein through the hub plate; andthe plurality of openings in the second flange disk aligning with the threaded studs of the hub plate; anda plurality of threaded fasteners, each for extending through a respective one of the openings in the flange disk and engaging the respective aligned tapped bore,whereby the second annual member rigidly attaches to the wheel hub. 17. The purgable labyrinth axle/hub seal as recited in claim 10, wherein the resilient pad comprises an annular ring that defines a groove on a first side for receiving the ring of the first annular member and a channel on an opposing side for receiving the ring of the second annular member. 18. The purgable labyrinth axle/hub seal as recited in claim 17, wherein the resilient pad comprises urethane. 19. The purgable labyrinth axle/hub seal as recited in claim 10, wherein the resilient pad comprises urethane. 20. The purgable labyrinth axle/hub seal as recited in claim 10, wherein the fitting attaches to the first annular member. 21. A purgeable labyrinth axle/hub seal, comprising: a first annular member having a ring with a first edge and a second edge;a flange disk attached to the first edge of the ring with the ring extending latterly from the flange disk;a pair of mounting members, each mounting member having a cross bar for being disposed transverse to a longitudinal axis of the axle and a pair of legs extending in a first direction at respective opposing ends of the cross bar, each leg having a lateral flange that defines an opening,whereby the mounting members mount on opposing sides of the axle with the flanges aligned with a respective one of the flanges of the opposing mounting member and for receiving a respective fastener through the aligned openings in the flanges to rigidly secure the mounting members to the axle; andat least one of the mounting members attached to the first annular member; a second annular member having a ring with a first edge and a second edge;a flange disk attached to an outer surface of the ring intermediate the first edge and the second edge with the flange disk extending laterally therefrom; anda second ring attached to an outer edge of the flange disk and a second flange disk attached to an outer surface of the second ring intermediate opposing edges thereof and extending therefrom to a distal edge, the second flange disk defining a plurality of spaced-apart openings for receiving fasteners therethrough for attaching the second annular member to a wheel hub attached to the axle with the respective second edges of the first annular member and the second annular member in facing relation;a lubricant gallery defined thereby between the first annular member and the second annular member;a fitting for communicating a lubricant into the lubricant gallery; anda resilient pad disposed between the first and second annular members, the resilient pad defining a first channel that receives the ring of the first annular member and defines a gap between respective walls thereof and the ring for a labyrinth path, and an opposing second channel that receives the ring of the second annular member,whereupon lubricant communicates through the labyrinth path outwardly of the seal member during rotation of the second annular member relative to the first annular member. 22. The purgable labyrinth axle/hub seal as recited in claim 21, wherein the ring in the first annular member comprises a pair of semi-circular members and the flange disk in the first annular member comprises a pair of semi-circular plates, each semi-circular plate attached to a respective one of the semi-circular members, and each of the mounting members attached to a respective one of the semi-circular members. 23. The purgable labyrinth axle/hub seal as recited in claim 21, wherein the wheel hub further comprises a hub plate and a plurality of threaded studs extending therefrom for attaching a wheel to the wheel hub, each stud defining a tapped bore therein through the hub plate; andthe plurality of openings in the second flange disk aligning with the threaded studs of the hub plate; anda plurality of threaded fasteners, each for extending through a respective one of the openings in the flange disk and engaging the respective aligned tapped bore, whereby the second annual member rigidly attaches to the wheel hub. 24. The purgable labyrinth axle/hub seal as recited in claim 21, wherein the resilient pad comprises urethane.
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