Although most rolling element bearings are grease lubricated, the underlying mechanisms of grease lubrication has not been fully explored. This study investigates grease film evolution with glass disc revolutions in rolling elastohydrodynamic lubrication (EHL) contacts. The evolution patterns of the grease films were highly related to the speed ranges and grease structures. The transference of thickener lumps, film thickness decay induced by starvation, and residual layer were recognized. The formation of an equilibrium film determined by the balance of lubricant loss and replenishment was analyzed. The primary mechanisms that dominate grease film formation in different lubricated contacts were clarified.

尽管大多数滚动轴承都采用油脂润滑，但尚未充分探索油脂润滑的基本机理。这项研究调查了滚动弹性流体动力润滑（EHL）接触中玻璃盘旋转时脂膜的演化。油脂膜的演变模式与速度范围和油脂结构高度相关。认识到增稠剂块的转移，由饥饿引起的膜厚度衰减和残留层。分析了由润滑剂损失和补充的平衡决定的平衡膜的形成。阐明了在不同润滑触点中形成油脂膜的主要机理。