Method for lubricating a rolling element bearing by means of an ultra low viscosity volatile fluid, and bearing arrangement

摘要

A method for lubricating a rolling element bearing (16, 17) by means of an ultra low viscosity volatile fluid (ULVVF) comprises the steps of:
- injecting a liquefied fluid flow into the bearing (16, 17),
- lubricating the rolling contacts between the rings (18, 19) and the rolling elements (20) of the bearing (16, 17) by means of the liquefied fluid,
- providing a flow restriction (23) for the liquefied fluid so as to maintain at least part of the fluid at a pressure which is above the evaporation pressure which is defined by evaporation of the fluid at the temperature or temperatures which prevail(s) in the bearing (subcooling).