| 摘要 |
An axle assembly having an axle shaft rotatably mounted within a housing and operably connected to a driving device at one end thereof, the axle shaft having an annular head formed on its end opposite the driving device, fastening element to fasten the head to a hub, the hub being rotatably mounted on the outer surface of the housing and rotatably driven by the axle shaft, the improvement comprising the annular head having formed thereon an annular lip disposed inwardly of the central bore of the hub, an annular groove provided on the outer surface of the annular lip to accept an "O" ring sealing member, the "O" ring sealing member forming a seal between the head and the hub.
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