초록 ▼

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 bon

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.

대표청구항 ▼

A bearing arrangement comprising: inner and outer races having opposed raceways between which a space exists, a retention surface at the end of one of the races and an undercut opening out of the retention surface; rolling elements arranged in a row between the raceways of the two races to enable th

A bearing arrangement comprising: inner and outer races having opposed raceways between which a space exists, a retention surface at the end of one of the races and an undercut opening out of the retention surface; rolling elements arranged in a row between the raceways of the two races to enable the races to rotate relative to each other; closure means for generally closing the space between the two races, the closure means including a metal element having a wall that is frictionally engaged with the retention surface at the end of said one race and a locking lip that extends from the wall and is doubled back with respect to the wall, the locking lip being located within the undercut.