Pre-seal for magnetic liquid seal for an anti-friction bearing
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United States of America Patent
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Jan 15, 1991
Grant Date -
N/A
app pub date -
Apr 5, 1990
filing date -
Apr 11, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magnetic liquid seal for an anti-friction bearing, the seal comprising an annular magnet and annular pole rings with respective supplies of magnetizable liquid radially between the pole rings and the inner ring. A pre-seal element with a lip extending toward the inner ring is supported on that axial side of the magnet that is toward the rolling element balls. A notch is defined in the inner race radially generally centered beneath the lip. The opposite axial side surfaces of the notch are obliquely outwardly inclined in the radially outward direction.
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