Abstract
Purpose: To identify the main directions for increasing the service life and reliability of bearing assemblies for high-speed rolling stock. Methods: An analysis of modern bearing designs and new materials used in their manufacturing has been conducted. Results: The analysis of the conducted research has shown that all the examined designs of bearing assemblies produced by NSK company mainly meet the current demands of railways operating at speeds up to 320 km/h, and can ensure the safety of train movement under all existing operating conditions. Recommendations for equipping the axle box unit s of rolling stock with bearings that perform most successfully under special operating conditions have been developed. The issues of monitoring the faults of axle box units operating on high-speed trains, such as TGV, ICE, and Talgo, and the systems of their onboard diagnostics, have been addressed. An assessment of the domestic control system is provided, and its advantages over foreign counterparts are demonstrated. A solution for diagnosing trains under the ‘black box’ regime has been proposed. Practical significance: The application of modern bearing designs, new materials, and diagnostic systems allows for an increase in the reliability and performance of railway rolling stock.
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