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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2008

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A simulation study on optimal oil spraying mode for high-speed rolling bearing

Pang B. T., Li J. S., Liu H. B., Ma W., Xue Y. J.

Journal of Achievements in Materials and Manufacturing Engineering

2008

Vol. 31, nr 2

553-557

Purpose: In this study, a numerical simulation model of the oil spraying system is established. Design/methodology/approach: Spraying lubrication is a common form of the rolling bearing lubrication. But with the increase of the bearing speed, the roller cage is frequently shattered, which may lead to failure of the bearing. The shatter of roller cage may be related to the spraying mode of oil. For high-speed rolling bearing, the roller cage shatter can be cracked due to the shortage of oil, caused by lubricating oil not sprayed into the roller cage shatter. This condition can be ameliorated by changing the spraying mode of oil supply system. The model considered the spraying speed, spraying angle, oil pressure, oil viscosity, structure of roller cage shatter, rotating speed as the main parameters. By optimization, the best way of oil spraying was obtained which can meet lubrication requirement of high-speed rolling bearing. At the same time, the numerical simulation results also revealed that the optimal spraying mode is different for different rolling bearings. Findings: The simulating results indicate that due to the effect of the air pressure and airflow thickness, the optimal spraying position is at a region closer to the inner ring of the bearings. Practical implications: This paper will provide useful information to applying numerical simulation of the oil spraying system. Originality/value: The computer simulation allows to better understand the interdependence between parameters of process and choosing optimal solution.