Seal assembly for bearing

Details Seal assembly for bearing Seal assembly for bearing

1978-10-12

1980-03-04

Butler, Douglas C.

Cutlery

3081872, F16C 3376

Patent

active

041914325

ABSTRACT:
An annular seal member secured to an outer ring is formed on its inner periphery with a highly flexible seal lip extending radially inwardly thereof along the side face of a peripheral stepped portion in the shoulder of the inner ring and spaced apart from the side face by a small clearance. The seal lip has an annular projection axially projecting from the inner side of its inner peripheral portion and lightly in contact with the side face of the stepped portion of the inner ring. The inner peripheral face of the seal lip and the peripheral bottom face of the stepped portion opposed to, and spaced apart by a small clearance from, the inner peripheral face are tapered axially inwardly of the inner ring. The tapered inner peripheral face of the seal lip is not greater than the tapered bottom face of the stepped portion in axial length. The bearing has improved dustproofness, leakproofness and rotation performance afforded by the seal assembly.

REFERENCES:
patent: 3414275 (1968-12-01), Takahashi
patent: 3572857 (1971-03-01), Hasegawa
patent: 3642335 (1972-02-01), Takahashi et al.
patent: 3792912 (1974-02-01), Howe, Jr. et al.

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