Roller bearing

Details Roller bearing Roller bearing

1987-04-16

1988-08-02

Petrakes, John

Bearings

Rotary bearing

Plain bearing

277 80, 384446, 384484, F16C 3374, F16C 3382, F16J 1540

Patent

active

047610824

ABSTRACT:
A rolling bearing comprising at least one outer and one inner race situated coaxially therein and a row of rolling members situated in a space between these races and first and second seals for sealing the space between the races off from the outside surroundings on either side of the rolling members, to prevent a lubricant present from escaping to the outside and to prevent foreign matter from penetrating into the space from outside, the first seal being generally annular and the second seal comprises a sealing lip that is in communication with one of the races and having an inwardly directed side which rests springily against the other race, the first annular seal having an end portion that lies behind the inwardly directed side of the sealing lip, at a short distance from the other race thereby defining first, open, slot-shaped annular space between the seals and the said inner race and which space contains a quantity of magnetic fluid, and a magnet forming a magnetic field whereby such fluid is held within the slot-shaped annular space.

REFERENCES:
patent: 3071385 (1963-01-01), Greiner
patent: 4043612 (1977-08-01), Orcutt
patent: 4171818 (1979-10-01), Moskowitz et al.
patent: 4309040 (1982-01-01), Pierrat
patent: 4531846 (1985-07-01), Raj
patent: 4628384 (1986-12-01), Raj et al.

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