Magnetic fluids (MFs) are a kind of magnetically manipulated colloid, which may serve as  an active lubricant. These fluids can be retained at the desired locations, by the application  of an appropriately designed external magnetic field. In this research work, initially, cen trifugal experiments were conducted to estimate the antispreading behavior of the MFs,  in the presence of an external magnetic field. Later, the starvation behavior of a thrust  ball bearing was investigated after lubricating it with an MF, under different magnetic  f  ield distributions and operating temperatures. The preliminary results presented that the  application of an external magnetic field can maintain more residual MFs in the raceway  at higher rotational speeds. Tribological tests showed that proper magnetic field distribu tion on the raceway may effectively inhibit the lubricant loss and prolong operation before  the starvation of the bearing. In addition, an increased operating temperature of the bearing  accelerated the occurrence of a starved state of lubrication. [DOI: 10.1115/1.4068222]

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