Tandem type rolling bearing

Abstract

The invention discloses a tandem type rolling bearing. The tandem type rolling bearing consists of a first ferrule, a second ferrule, a third ferrule, first rolling bodies, second rolling bodies, a first retainer and a second retainer. The first ferrule, the second ferrule and the third ferrule are arranged coaxially; the first rolling bodies arranged between the first ferrule and the second ferrule uniformly in the circumferential direction, and are separated by the first retainer; the second rolling bodies are arranged between the second ferrule and the third ferrule uniformly in the circumferential direction, and are separated by the second retainer; and the first rolling bodies and the second rolling bodies can revolute and autorotate in respective to rolling ways. The bearing adopts the form that two groups of rolling bearings are connected in series, and an outer ring of an internal bearing part and an inner ring of an external bearing part are designed into a whole body which can rotate around the center of the bearing like the retainer, so that the slip speed in the contact position of the rolling bodies and the ferrule rolling ways is reduced, and the problems of serious heating and acute abrasion of the bearing are relieved.

Description

technical field [0001] The invention relates to a tandem rolling bearing, which belongs to the technical field of bearings. Background technique [0002] Rolling bearing is one of the important basic parts in industrial machinery and equipment, and its working performance directly determines the operation performance of the whole machine. Rolling bearings are usually composed of a single outer ring, a single inner ring, a single cage and multiple rolling elements. Its function is to support the rotating parts in the machine to reduce the friction in its motion and ensure the rotation accuracy of the rotating parts. Because there is sliding between the rolling elements and the ring raceway, the heat source of the rolling bearing mainly comes from the friction between the rolling elements and the rings, and a small amount comes from the friction and collision between the rolling elements and the cage. The heat and wear of rolling bearings have a great influence on its precisi...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of the rolling bearing described in the background technology, such as serious frictional heat generation and increased wear of the bearing due to the high sliding speed at the contact point between the rolling element and the ring, the present invention provides a tandem rolling bearing

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