Influence of lubricant material in the point contact zone of rolling friction on fatigue life for friction bearing units

Although lubrication is necessary for the satisfactory operation of rolling bearings, effect lubricant on fatigue life bearing has not been sufficiently studied. In recent times, theory elastohydrodynamic (EHD) [1] used to explain different effects lubricants. According this theory, thickness lubricating layer separating moving elements determined by viscosity-pressure dependence lubricant. The contact surface micron irregularities does occur if it possible maintain a sufficient - in case, long-term durability ensured. If film reduced level where are encountered, rapidly decreases with increasing frequency. any comprehensive calculation methodology needed that would allow take into account influence units.