Magnetic liquid sealing ring installed in an antifriction bearin

Details Magnetic liquid sealing ring installed in an antifriction bearin Magnetic liquid sealing ring installed in an antifriction bearin

1989-01-25

1990-01-02

Footland, Lenard A.

Bearings

Rotary bearing

Antifriction bearing

384478, 277 80, F16C 3382

Patent

active

048909408

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.

REFERENCES:
patent: 4598914 (1986-07-01), Furumura et al.
patent: 4605233 (1986-08-01), Sato
patent: 4765756 (1988-08-01), Gabelli
patent: 4797013 (1989-01-01), Raj et al.

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