Bearings – Rotary bearing – Antifriction bearing
Patent
1985-09-11
1986-08-12
Footland, Lenard A.
Bearings
Rotary bearing
Antifriction bearing
384485, 277 95, F16C 3378
Patent
active
046053182
ABSTRACT:
An elastic annular seal for use in an antifriction bearing wherein a portion of the inner race extends axially beyond the adjacent end face of the outer race and the races define an annular gap extending axially toward the chamber for the rolling elements of the bearing. The seal has a disc-shaped supporting portion which is anchored in a groove of the portion of the inner race, a sleeve which extends from the supporting portion axially toward and into the gap and bears against the inner race, a first lip which extends from the supporting portion and one axial end of the sleeve externally of the gap and sealingly and slidingly engages the end face of the outer race, and a second lip which is integral with the other axial end of the sleeve and slopes in the gap radially outwardly toward and into sealing and sliding engagement with the outer race. The lubricating material which accumulates in the annular space between the two lips enhances the sealing action by preventing moisture, dust and/or other foreign matter from penetrating axially into contact with the rolling elements. Such lubricating material issues from the space for the rolling elements and deforms the radially outermost portion of the second lip on its way into the space between the lips.
REFERENCES:
patent: 3449029 (1969-06-01), Smith
patent: 3797899 (1974-03-01), Anderson
patent: 3856368 (1974-12-01), Andersen
patent: 4497495 (1985-02-01), Christiansen
Footland Lenard A.
INA Walzlager Schaeffler KG
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