Sealing ring for sealing aligning roller bearing

Abstract

The invention discloses a sealing ring for sealing an aligning roller bearing. The sealing ring comprises a rubber ring and a steel plate ring embedded in the rubber ring; a first bending portion perpendicular to the end face of the steel plate ring is molded on the periphery of the steel plate ring, a second bending portion parallel to the end face of the steel plate ring is molded at the outer end of the first bending portion, a third bending portion bent in the inner side direction of the sealing ring is molded on the inner periphery of the steel plate ring, the outer periphery of the rubber ring is a conical face with the narrow interior and the wide exterior, a gap is molded in the outer periphery of the rubber ring in the axial direction, and a ventilation hole is formed in the position, different from the position of the gap, of the circumference of the inner wall of the rubber ring; the gap and the ventilation hole can ensure that the phenomenon that due to the large interior and exterior pressure difference of the bearing, starting torque of the bearing is large, or the bearing is clamped is avoided, and due to the fact that the gap and the ventilation hole are staggered in position, sealing performance of the bearing can be ensured; an outer seal lip and an inner seal lip form a similarly-herringbone structure, and the sealing function of the bearing can be ensured while the aligning roller bearing carries out aligning.

Description

technical field [0001] The invention belongs to the technical field of bearing sealing, and in particular relates to a sealing ring structure for sealing a self-aligning roller bearing. Background technique [0002] The sealing performance of the bearing is an important indicator of the bearing. The sealing performance is mainly reflected in the bearing's oil leakage prevention, grease leakage prevention, dustproof, waterproof and other aspects. Bearings for different purposes have different requirements for sealing performance. If the sealing performance of the bearing does not meet or meet the requirements of use, it will lead to the intrusion of external sediment, dust and water vapor, which will cause noise and vibration, and increase the wear of raceways and rollers. Fatigue and peeling of the raceway and roller surface will seriously affect the service quality and life of the bearing. In extreme cases, the bearing will be stuck, the operating mechanism will stop, and s...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a sealing ring for sealing the self-aligning roller bearing in view of the deficiencies in the prior art, which can not only solve the sealing problem of the self-aligning roller bearing during use, but also solve the problems caused by The bearing seal causes a large pressure difference between the inside and outside of the bearing, which causes the bearing starting torque to be large or the bearing to be stuck.

Images