Abstract
Some design conditions can have a negative or serious effect on vibration, efficiency and life of the transmission components. Gears and bearing lubrication and cooling methods may produce losses in efficiency, vibration and reduced life if not properly applied. Some gear design methods may cause a much lower life than expected when improperly applied. An example of a large gear design is discussed showing the results of poor design practice Other examples of bearing and gear applications are presented with reasons for failure and with improved design methods for solutions.
