Sealing device for roller bearing

Details Sealing device for roller bearing Sealing device for roller bearing

1997-07-03

1999-01-19

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

277562, 277914, F16C 3378, F16J 1532

Patent

active

058607480

ABSTRACT:
A sealing device for a bearing comprises a first bearing member having a peripheral shoulder portion, a second bearing member, and a seal member integrally connected to the second bearing member and having an inner peripheral portion and an inner peripheral seal lip extending from the inner peripheral portion. The inner peripheral seal lip has first projections extending in a first direction towards a surface of the peripheral shoulder portion of the first bearing member and second projections extending in a second direction opposite the first direction. One of the first projections is initially disposed in contact with the surface of the peripheral shoulder portion of the first bearing member. When the first projection of the inner peripheral seal lip which is initially in contact with the surface of the peripheral shoulder portion of the first bearing member undergoes a predetermined amount of wear, at least one of the other first projections of the inner peripheral seal lip comes in contact with the surface of the peripheral shoulder portion of the first bearing member to maintain an adequate seal therebetween.

REFERENCES:
patent: 3572857 (1971-03-01), Hasegawa
patent: 4191432 (1980-03-01), Miki et al.
patent: 4505484 (1985-03-01), Ohkuma et al.
patent: 4695062 (1987-09-01), Dreschmann et al.
patent: 4865471 (1989-09-01), Miyazaki
patent: 5037213 (1991-08-01), Uchida et al.

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