Keywords
Citation
(1999), "New ESDU data helps engineers estimate bearing temperatures", Industrial Lubrication and Tribology, Vol. 51 No. 2. https://doi.org/10.1108/ilt.1999.01851bad.006
Publisher
:Emerald Group Publishing Limited
Copyright © 1999, MCB UP Limited
New ESDU data helps engineers estimate bearing temperatures
New ESDU data helps engineers estimate bearing temperatures
Keywords Bearings, Temperature
ESDU International has introduced a new Data Item that provides a FORTRAN computer program manual that enables engineers to estimate heat flow rates and equilibrium temperatures in self-contained bearing assemblies.
The ability to estimate bearing temperatures is the key to estimating many other bearing performance characteristics such as wear rates in dry rubbing bearings, grease life in rolling element bearings, or film thickness, power loss and oil flow in hydrodynamically lubricated bearings.
An accurate estimate of the temperature at other points in a bearing assembly can also be required for assessing lubricant degradation and life or for assessing any safety hazard from hot external surfaces.
The new ESDU program, Data Item No. 97019, implements much of the heat transfer and dissipation analysis methods already described in earlier data, but their manual calculation methods have been considerably improved by updating to a computer program.
The thermal network analysis implemented by the new program is of a general nature, but is most applicable to self-contained bearing assemblies.
The equilibrium temperatures are determined by equating the rate of heat generation in a system to the rate of heat dissipation. It is assumed in all cases that the rate of heat dissipation in the bearing or the coefficient of friction, from which the heat generation rate can be determined, is known.
ESDU International, an IHS Group Company, produces and updates comprehensive validated engineering data and related engineering procedures covering the aerospace, mechanical, chemical and structural engineering sectors.
They are used by engineers in many of the world's largest industrial engineering groups to help optimise their product designs and represent a unique and invaluable engineering resource.
For more information contact: Phillipa Fernandez, ESDU International. Tel: +44 (0) 171 490 5151.