1980-09-25
1982-04-20
Footland, Lenard A.
Cutlery
277 50, 308DIG1, F16C 3378
Patent
active
043255914
ABSTRACT:
A two row tapered roller bearing having a one-piece double cup and separate cone assemblies fitted into the ends of the cup is unitized by seals which close the ends of the bearing. Each seal includes a metal seal case pressed into a bore that opens out of the cup and an elastomeric seal element bonded to the case and contacting the cone at that end of the cup out of which the bore opens. The seal case has a cylindrical wall along which an interference fit exists between it and the surface of the end bore into which it is fitted. At its end the cylindrical wall is curled back upon itself to form a locking lip, and this lip fits into an undercut located between the end bore and the adjacent tapered raceway of the double cup. The curled locking lip substantially increases the force required to extract the seal, in that the lip must be straightened or uncurled in order to withdraw the cylindrical wall of the seal case from the end bore. Yet, the curled lip does not diminish the effectiveness of the interference fit in accurately and securely positioning the seal case. Each seal case is configured such that it blocks the adjacent cone and its complement of rollers before the rollers contact and perhaps damage the lips of the elastomeric seal element.
REFERENCES:
patent: 2879114 (1959-03-01), Bowen
patent: 3396975 (1968-08-01), Otto
patent: 3494682 (1970-02-01), Keller
patent: 4062603 (1977-12-01), Orain
Footland Lenard A.
The Timken Company
LandOfFree
Sealed and unitized bearing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sealed and unitized bearing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealed and unitized bearing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1260851