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Bearings are important components in equipment. Although first-class bearings are very reliable, to ensure their longest service life, more attention should be paid. Proper preservation, careful installation and disassembly, sufficient lubrication and relubrication, correct condition monitoring, timely maintenance, and finally comprehensive personnel training are all crucial for improving the service life of bearings and equipment performance.

Abstract: Roller bearings are an important component of rolling mills, and the quality of installation and maintenance of roller bearings has a significant impact on their service life. This article introduces the installation and maintenance experience of four row cylindrical roller bearings used in rolling mills, in order to provide some practical experience for the installation and maintenance of four row cylindrical roller bearings. Keywords: rolling mill; Four row cylindrical roller bearings; Installation; maintenance

With the rapid development of civil aviation engine technology, low fuel consumption, low pollution emissions and high safety have become the goals of high bypass ratio turbofan engines. For traditional twin-shaft direct-drive turbofan engines with high bypass ratio, the propulsion efficiency is usually improved by increasing the fan diameter, reducing the fan pressure ratio and exhaust velocity. Bearings are important basic components of aero-engines, and complex and harsh environments such as high temperature, high pressure, fatigue, and wear seriously affect the service life of bearings. Improving the service life of aero-engine bearings has always been a hot issue in scientific research.

Rolling bearings are one of the essential basic components of running machinery. Although rolling bearings are small in size and low in cost, once the rolling bearings fail, the losses caused to the operating machinery and even the entire production equipment are enormous. With the rapid development of technology, enterprises have increasingly high requirements for the quality of rolling bearings. Especially for automated and continuous production enterprises, the reliability requirements for rolling bearings are very strict. Therefore, how to improve the reliability of rolling bearings has become one of the main problems that rolling bearing manufacturers and customers urgently need to solve. The reliability of rolling bearings is closely related to the failure forms of rolling bearings. To improve the reliability of bearings, it is necessary to start with the failure forms of bearings and carefully analyze the reasons for the failure of rolling bearings in order to find specific measures to solve the failure.




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