Theory of Grease Lubrication of Cylindrical Roller Bearing

Abstract

The lubrication theory on the substances of rheological behaviour as grease is a recent theme. In particular, as the grease is often used for the lubrication of rolling bearing, it is important to establish a theory of grease lubrication for rolling bearings. In this paper, considering the grease as a Bingham plastic, a theory of grease lubrication for cylindrical roller bearing has been deduced. That is, the special core formation in grease film, the frictional resistance of rolling bearing, the pressure distribution and the load capacity of grease film entrapped between roller and race of cylindrical roller bearing have been researched. In addition, the above grease lubrication theory is compared with the oil lubrication theory.