Self-aligning roller bearing with sealing elements at two sides

Abstract

The invention relates to a self-aligning roller bearing with sealing elements at the two sides. The self-aligning roller bearing comprises an outer ring, an inner ring, a rolling body, a retainer andthe framework-contact sealing elements, wherein the retainer is installed between the outer ring and the inner ring; the rolling body is installed in the retainer; sunken circular steps are symmetrically arranged at the two ends of the outer cylindrical surface of the outer ring; an annular groove used for fixing one framework-contact sealing element is formed in the radial direction of the root part of each step; and one end of each framework-contact sealing element is fixed to the corresponding step on the outer cylindrical surface of the outer ring, and the other end of the framework-contact sealing element makes contact with a raceway of the inner ring or a small retaining side of the inner ring. The self-aligning roller bearing disclosed by the invention has the following beneficial effects: the bearing capacity and the self-aligning performance of the bearing cannot be influenced by a sealing position, and moreover, the sealing elements of the bearing are simple to assemble, andthe early-stage abnormal failure of the sealing elements in transport and installation processes is avoided; and in the working process of the bearing, the framework-contact sealing elements are compressed with the end surface of the outer ring through other parts, so that the normal working of the sealing elements is ensured, and then the service lives of the sealing elements and the bearing areprolonged.

Description

technical field [0001] The invention relates to a bearing, in particular to a self-aligning roller bearing with seals on both sides. Background technique [0002] Due to the unique self-aligning function of self-aligning roller bearings, most self-aligning roller bearings are open structures. However, during the working process of the bearings, especially under severe working conditions, the external pollutants of the bearings will invade the interior of the bearings, and the interior of the bearings The lubricating grease will be squeezed out of the raceway by the rollers, making it difficult to lubricate and reduce the service life of the bearing. Therefore, it is necessary to install a self-aligning roller bearing with a seal under most working conditions. At present, the common spherical roller bearings with double-sided seals are usually skeleton contact seals. The sealing lip is in contact with the inner ring raceway or the small rib of the inner ring. The skeleton is ...

AI Technical Summary

Problems solved by technology

[0002] Due to the unique self-aligning function of self-aligning roller bearings, most self-aligning roller bearings are open structures. However, during the working process of the bearings, especially under severe working conditions, the external pollutants of the bearings will invade the interior of the bearings, and the interior of the bearings Lubricating grease will be squeezed out of the raceway by the rollers, and it is difficult to play a role in lubrication, which reduces the service life of the bearing. Therefore, it is necessary to install a self-aligning roller bearing with a seal in most working conditions

At present, the common spherical roller bearings with double-sided seals are usually skeleton contact seals. The sealing lip is in contact with the inner ring raceway or the small rib of the inner ring. The skeleton is fixed in the sealing groove inside the outer ring by a press-fitting mold. When the bearing is self-aligning, the inner ring, rolling elements and cage will be offset relative to the outer ring. Since the skeleton seal is fixed in the sealing groove inside the outer ring, when the bearing is offset, the roller will contact the skeleton seal. In order to achieve a certain Self-aligning function, the length of the rollers will be shortened during design, thereby reducing the bearing capacity of the bearing

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