Magnetic liquid sealing ring installed in an antifriction bearing
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United States of America Patent
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-
Jan 2, 1990
Grant Date -
N/A
app pub date -
Jan 25, 1989
filing date -
Feb 3, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic liquid sealing ring installed in an antifriction bearing between the outer and the inner rings is an integral structure comprised of a sealing ring, which is engaged in the bearing outer ring, and of a pre-seal at the axial inside of the sealing ring. Magnetic liquid elements are supported radially inward of the sealing ring by a magnet in the sealing ring. The pre-seal has an annular groove opening toward the bearing inner ring for holding escaping liquid. An axially outwardly facing shoulder formed on the bearing inner ring raceway cooperates with an axially inwardly facing inside of the pre-seal for defining a slot between them and those surfaces are inclined obliquely to the rolling elements and to the axis of the bearing.
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