前言在滚动轴承的滚柱与内外环间,受载部分的油(脂)膜厚度对防止轴承的磨损是十分重要的,这个区域的油膜厚度可以预测,但脂膜厚度则无法预测,为此研制出测定润滑脂膜厚度的方法。用油润滑的滚柱副在受载的周边接触区回转时,其有关原理比较容易阐述,这时,滚柱之间的油膜与滚柱构成一个电容器,电容的大小与油膜厚度成反比。油膜厚度与滚动速度及温度变化有关,使用道森公式可较精确地算出所形成的油膜厚度。油膜厚度与电容的关系可用实验来确定。对于介电常数相同的其它任何润滑剂,这个关系都是不变的,因此从测定电容的实验中,可以推导出任何油、脂的道森油膜厚度值。经过一定的修正后,这个原理可应用到更复杂的滚柱轴承的滚柱系统。内外环之间的电容由受载区的油膜厚度决定。在受载区油膜最薄,而每个滚柱的电容相对就比较 Foreword Between the roller bearings and the inner and outer rings, it is important that the oil film thickness of the loaded part is to prevent bearing wear. The thickness of the oil film in this area can be predicted but the thickness of the grease film can not be predicted. To this end, A method of measuring the grease film thickness. The principle of oil-lubricated roller pairs rotating around the loaded perimeter contact area is relatively easy to elaborate. In this case, the film between the roller and the roller forms a capacitor, and the size of the capacitor is inversely proportional to the film thickness. Oil film thickness and rolling speed and temperature changes related to the use of Dawson formula can be more accurately calculate the thickness of the film formed. The relationship between film thickness and capacitance can be experimentally determined. This relationship is constant for any other lubricant with the same dielectric constant, so any oil or fat Dawson film thickness value can be derived from the capacitance measurements. After some amendments, this principle can be applied to more complex roller bearing roller system. The capacitance between the inner and outer rings is determined by the film thickness of the receiving zone. In the loading zone the thinnest film, while the capacitance of each roller is relatively