Sealed cylindrical roller bearing

Details Sealed cylindrical roller bearing Sealed cylindrical roller bearing

1988-05-09

1989-05-16

Footland, Lenard A.

Bearings

Rotary bearing

Antifriction bearing

384482, 384480, 277 95, F16C 4104

Patent

active

048305189

ABSTRACT:
A seal plate for sealing the axial end opening between the outer ring and the inner ring of a cylindrical roller bearing includes a mandrelor core. The mandrel has a fixing portion at the peripheral part to be fitted to the outer ring, a slant portion protruding obliquely and outwardly, an intermediate portion extending from the slant portion perpendicularly to the axis, and bent portion protruding inwardly in the axial direction from the inner edge of the intermediate portion. A lip portion formed of an elastic member is bonded to the bent portion to extend in the opposite direction to the fixing portion. In the cylindrical outside surface of the flange of the inner ring, there is a step-formed portion in two steps at a position facing the bent portion and the lip portion of the mandrel of the seal plate. The bent portion is positioned close to a cutout surface (step surface) and an end face of the first step with a minute axial and a minute radial clearance to form a non-contact type sealing portion, and the inner edge of the lip portion is positioned slidingly in contact with a cutout surface of the second step to form a contact type sealing portion.

REFERENCES:
patent: 3572857 (1971-03-01), Hasegawa
patent: 3642335 (1972-02-01), Takahashi et al.
patent: 3870384 (1975-03-01), Ladin
patent: 4780003 (1988-10-01), Bauer et al.

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