Rolling bearing taking carbon graphite or electrographite as integral holder and manufacturing method thereof

Abstract

The invention discloses a rolling bearing taking carbon graphite or electrographite as an integral holder, which comprises a bearing outer ring, an inner ring, a rolling body embedded between an outer ring roller path and an inner ring roller path, and a holder which uniformly separates the rolling body along a circumferential direction and is integrally formed by machining the carbon graphite or an electrographite pipe or an electrographite ring. The integral holder is made of the carbon graphite or the electrographite which has the advantages of high temperature resistance, low temperature resistance, corrosion resistance, and high strength, self-lubricating performance and machining performance, so that the holder is not a short slab which constrains the upper limit and the lower limit of the using temperature and the corrosion resistance of the bearing any longer. In an ultrahigh temperature, ultralow temperature or strong acid, alkali and salt medium invaded environment in which lubricating oil or lubricating grease cannot work, by using the carbon graphite or electrographite integral holder, the lubricating oil or the lubricating grease is not filled into the bearing, so that the invention has very high engineering application value.

Description

technical field [0001] The invention relates to the technical field of special rolling bearings, in particular to a rolling bearing using carbon graphite or electrographite as an integral retainer, the integral retainer and a method for making the integral retainer. Background technique [0002] Many main engines working in high temperature or low temperature environment need high temperature or low temperature resistant bearings to support their operation. At present, the existing high-temperature or low-temperature-resistant bearings generally use high-temperature or low-temperature-resistant steel or ceramics for their rings and rolling elements, and their lubricants use high-temperature or low-temperature-resistant lubricating oil, grease or solid lubricants. Commonly used polytetrafluoroethylene (PTFE), soluble polytetrafluoroethylene (PFA) or polyether ether ketone (PEEK). Bearing rings and rolling elements can be used for high and low temperature performance in parti...

AI Technical Summary

Problems solved by technology

[0008] The first object of the present invention is to provide a rolling bearing using carbon graphite or electrochemical graphite as an integral cage to solve the problem of polytetrafluoroethylene (PTFE) and soluble polytetrafluoroethylene used in existing cage materials in the prior art. Both (PFA) and polyetheretherketone (PEEK) cannot work stably for a long time in an environment higher than 260 degrees or lower than -60 degrees or in an environment attacked by strong acid, alkali and salt media, which will affect the use of the entire rolling bearing. technical issues

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