Bearing device for axle of railway vehicle
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United States of America Patent
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Jul 29, 2014
Grant Date -
Jan 10, 2013
app pub date -
Mar 24, 2011
filing date -
Apr 8, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An axle bearing device includes an inner ring fixed to an axle of a railway vehicle, an outer ring fixed to a journal box of the railway vehicle, and double row tapered rollers arranged between raceway surfaces of the inner ring and raceway surfaces of the outer ring. An opening portion between the inner ring and the outer ring is sealed by a labyrinth seal including at least one axial labyrinth extending in an axial direction and at least one radial labyrinth extending in a radial direction. At least one of the at least one axial labyrinth and the at least one radial labyrinth which form the labyrinth seal is formed between an outer-ring-side sealing member mounted to the outer ring and the inner ring or between the outer-ring-side sealing member mounted to the outer ring and an inner-ring-side sealing member mounted to the inner ring.
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