Abstract
The feasibility of the operation of a mainshaft ball bearing with grease lubrication at high speed has been demonstrated by rig tests. Angular contact ball bearings of 8 mm bore were used under the 137 N axial load. In order to achieve a good reliability of the grease lubrication at very high speed, the bearings have been subjected to a variety of hostile tests, including the snap accelerations from 0 to 100000 rpm within 10 seconds, extended operation at high axial loading, operation at high speed, and operation exposed to hot air at turbine inlet. From extensive experiments, it was found that the bearings could be operated up to the speed of 0.87 million DN with grease lubrication, and a low-cost grease lubrication system was developed for an expendable small turbomachine.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Dyson, A. and Wilson, A. R., 1969–70, Film Thicknesses in Elastohydrodynamic Lubrication of Rollers by Greases,Proc. Instn Mech Engrs, Vol. 184, Pt 3F, pp. 1–11.
Parker, R. J., 1980, Lubrication of Rolling Element Bearings,The International Conference on Bearing-Design: Historical Aspects, Present Technology and Future Problems, August 18–21, pp. 87–110.
Scarlett, N. A., 1967–68, Use of grease in rolling bearings,Proc. Instn Mech Engrs, Vol. 182, Pt 3A, pp. 585–593.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Kim, K. Grease lubrication of the high-speed ball bearing for small turbomachines. KSME International Journal 12, 1011–1016 (1998). https://doi.org/10.1007/BF02942574
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02942574