A low-speed heavy-duty ball bearing

Abstract

The invention belongs to the technical field of bearings, and particularly relates to a low-velocity heavy-load roller sliding bearing. The low-velocity heavy-load roller sliding bearing comprises aninner ring, an outer ring, a first roller, a second roller, a sealing ring and a screw, the outer ring is arranged on the inner ring in a sleeving manner, the diameter of the first roller is larger than the diameter of the second roller, the first roller is located between the inner ring and the outer ring, and the first roller is matched with the inner ring; the second roller is located between the inner ring and the outer ring, and the second roller and the first roller are arranged in a spaced manner; and the sealing ring seals the end faces of the inner ring and the outer ring, the sealingring is fixedly connected with the inner ring through the screw, and the sealing and the inner ring are rotationally connected with the outer ring. By means of the low-velocity heavy-load roller sliding bearing, lubrication on the first roller and the second roller can be effectively improved, abrasion of the first roller and a concave part is reduced, abrasion of the second roller and a first groove is reduced, and the service life of the low-velocity heavy-load roller sliding bearing is prolonged.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to a low-speed heavy-load ball bearing. Background technique [0002] Bearings are an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling elements and cage. According to the shape of rolling elements, rolling bearings are divided into two categories: ball bearings and roller bearings. [0003] In some cranes and large-scale excavation machinery equipment, the load that the bearing can bear is high; at the same time, this type of equipment does not require high speed during use, as long as the bearing can bear a large load and the bearing has a long service life That is enough; therefore, it is necessary to seek a bearing with higher load capacity...

AI Technical Summary

Problems solved by technology

[0007] In the above-mentioned patent document 2, by setting a double raceway structure and two sets of rolling elements, both sets of rolling elements are in close contact with the raceway of the inner ring of the bearing and the raceway of the outer ring of the bearing. The raceway of the ring and the rolling elements are not easy to be lubricated and the friction force is large, the bearing wear is serious, and the service life of the bearing is short

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