Three-point contact ball bearing

Abstract

The invention discloses a three-point contact type ball bearing which comprises a bearing inner ring, a rolling body, and a bearing outer ring; the rolling body is arranged between the bearing inner ring and the bearing outer ring; the invention is characterized in that an annular track the section of which is U-shaped is arranged on the outer side surface of the bearing inner ring; an annular spherical track is arranged on the inner side surface of the bearing outer ring; the included angles between the annular track on the bearing inner ring and the annular spherical track on the bearing outer ring, as well as between the contact point of the rolling body and the central line of the rolling body are between 150 and 270 degrees. The three-point contact type ball bearing is a ball bearing with large size, high rotation speed and adjustable center, and not only can bear a pure radial load, but also can bear a certain radial load; a specially designed lubricating structure greatly improves the lubricating effect and improves the service life of the bearing.

Description

technical field [0001] The invention relates to a bearing, in particular to a three-point contact ball bearing. Background technique [0002] Since the British produced the first bearing in 1880, the bearing industry has developed rapidly. According to statistical data, the currently widely used bearings are still composed of the inner ring of the bearing, the rolling elements, and the outer ring of the bearing. The rolling body is set between the inner and outer rings of the bearing, and there is a circular track on the inner and outer rings. The cross section of the bearing is arc-shaped, and the rolling body and the track are tangent to one point. This kind of bearing can only bear radial load and its capacity is limited. Limit, the carrying capacity of the axial load is almost zero, when the load is greater than the load of the existing bearing, the service life of the bearing is greatly reduced. In order to break through the limitations of this structure, angular cont...

AI Technical Summary

Problems solved by technology

With the development of the economy, the requirements for bearings are getting higher and higher. Many special equipment with special requirements put forward higher requirements for bearing design, such as: larger geometric size, high speed, higher load capacity capacity, good stability, etc., so the existing bearings cannot meet the requirements of these special equipment

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