三马致力于打造优质传动设备蜗轮蜗杆

Main reasons for leakage of worm gear reducer

1. The gear shaft passes through the circular surface where the bearing is located and extends out of the reducer through the end cover. There is a certain gap between the shaft and the end cover hole. Because of the pressure difference between the two sides of the sealing point, the splashed smooth oil can not flow back to the lower casing of the reducer in time after passing through the bearing. The oil gathers between the bearing and the end cover, and the shaft is in rolling condition, so it can be used for a long time. The seal of the rear lower shell and the end cover is not very close, forming the oil leakage through the axial surface and the end cover groove.



2. The seal of the contact surface between the upper and lower shells of the worm gear reducer is the first static seal point of the reducer. The lack of smoothness of the contact surface, the deformation of the upper and lower cover steel sheet and the tightening of the bolts will also result in smooth oil leakage.



3. With the extension of operating time, the oil seal of the reducer is aging and the shaft head wears out frequently, which often leads to the smooth oil leakage of the input and output shaft of the reducer. In addition, the aging of the frame seal ring also causes the oil leakage of the reducer head.



At first, we thought that the steel frame seal was formed because of the quality problem or the heavy load, but after several replacements, the effect was still unsatisfactory. Finally, we looked through a lot of materials, after careful analysis, the original reducer input shaft oil retaining ring from an increase of double row oil retaining ring, one is open type. . This can block the oil flowing through the shaft and bearing during the spatter process. In addition, we also disposed of the return tank and the return circuit, and replaced the return hole with a sunk head to facilitate oil recovery. On the other hand, the oil guide groove is introduced into the chamfer near the bearing at the lower part of the reducer, so as to facilitate the flow into the oil pool. We also looked at the vents and expanded the vents to reduce the effect of oil temperature and pressure on the skeleton seals. In addition, we have also replaced the skeleton seal ring. After a period of application, the results show that the effect is very good, and the oil leakage problem has been dealt with, which not only saves manpower and material resources, but also saves expenses.