滚动轴承润滑状态的实验研究表明，实际工况下轴承很难形成全膜，接触率一般在５０％～６０％之间；对部分膜测试发现，当接触率大于１０％时，工况参数（转速、载荷和温度）对接触率影响显著，小于１０％时影响很小。用哈姆罗克－道森公式计算的油膜厚度和实际油膜厚度差别显著。附图６幅，表１个。 The experimental study of lubrication state of rolling bearing shows that the bearing is difficult to form a full film under the actual conditions, and the contact rate is generally between 50% and 60%. For the partial membrane test, it is found that when the contact rate is more than 10% , Load and temperature) have a significant impact on the contact rate, less than 10% of the impact is small. The difference between oil film thickness and actual oil film thickness calculated by Hamrock-Dawson formula is significant. Figure 6, Table 1.