Steady State Performance

Computer-generated performances have been obtained for most of the bearing types previously discussed. Information has been plotted in a nondimensional format so that no restrictions exist on operating conditions, lubricant properties, and so on. Use of the charts will be subsequently demonstrated by numerical example.

Viscosity One of the key parameters in determining the performance of a bearing is the lubricant viscosity. Viscosity characteristics of commonly used Society of Automotive Engineers (SAE) grades of oil are shown in Figure 12. The units of viscosity are microreyns, where the reyn has the units of lb • s/in2 and comes from the ratio of shear stress to the velocity gradient across the film, as indicated by Equation 21. Other units of viscosity are centipoises, Saybolt seconds universal (SSU), and centistokes. The conversion factors are as follows:

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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