Recent Patents on Roller Bearing

Background: Roller bearing is a widely used component in modern machinery. It has the advantages of small friction, low starting torque, high rotation accuracy, less power loss, and high efficiency. The researches on the structure and working principle of new type roller bearings are conducive to improving the performance of bearings. Therefore, it is necessary to analyze and summarize the recent research. Objective: By summarizing the research on roller bearings in recent years, some valuable conclusions are obtained to predict the future development of roller bearings and provide a reference for researchers in related fields. Methods: This paper summarizes the representative patents related to roller bearings, including bearings with tapered rollers, cylindrical rollers, spherical rollers, and needle rollers. The advantages and disadvantages of these roller bearings are discussed. The influences of the special structure of these bearings on their performances are analyzed. Results: The existing problems are summarized through the analyses of the patents related to roller bearings. New patents of roller bearing to be developed in the future are expected. Conclusion: Optimizing the roller bearing structure improves the accuracy and reliability of the whole equipment. It is necessary to continually improve the roller bearings' structure according to the actual working conditions, especially simplifying the bearing structure. More and more novel bearings will be invented in the future.