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Improving Rolling Element Bearing Thermal Compliance Through In Situ Cooling

[+] Author Affiliations
E. Y. A. Wornyoh, D. K. Patel, A. B. Francis, C. S. Garnett

University of Wisconsin-Milwaukee, Milwaukee, WI

Luke Schuessler

University of Wisconsin- Milwaukee, Milwaukee, WI

Paper No. IJTC2011-61210, pp. 245-247; 3 pages
doi:10.1115/IJTC2011-61210
From:
  • ASME/STLE 2011 International Joint Tribology Conference
  • ASME/STLE 2011 Joint Tribology Conference
  • Los Angeles, California, USA, Oct 24–26, 2011
  • ISBN: 978-0-7918-5474-7
  • Copyright © 2011 by ASME

abstract

In this study a novel in situ rolling element bearing (REB) lubricant cooling system is developed that provides a continuous cooling of the bearing outer race. In the design the stationary outer race is expanded to accommodate a cooling coil for the continuous cooling of the lubricant and the outer race. Water is used as the coolant While Amsoil 75W-90 Severe Gear® oil is used as a lubricant. Heat generated during the test run is removed by the coolant flowing through the cooling coil. The tribological effects at the speeds of the cooling test were evaluated using block-on-ring tribometer tests. Results from the experiments indicate that in the absence of cooling the temperature of the bearing outer race rises while cooling dramatically lowers the temperature. Also, the coefficient of friction increases with increasing speed. As such, in situ cooling that leads to reduced operational temperature minimizes lubricant degradation that can result from uncontrolled frictional heating.

Copyright © 2011 by ASME

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