本文通过对三种尾管轴承回油型式的分析比较,指出其中二端回油的型式具有调压、保温、减漏与节能等特点,以及加装方便、工艺简单,效果显著的优点。作者认为,这种回油型式适合国情,值得推广应用。 This article analyzes and compares the oil return type of three kinds of tail pipe bearings, and points out that the type of oil returning at the two ends has the characteristics of pressure regulation, heat preservation, leakage reduction and energy saving, as well as the advantages of convenient installation, simple process, and significant effect. The author believes that this oil return type is suitable for national conditions and is worthy of promotion and application.