In terms of commonly used reducer models, the primary reasons for oil leakage in worm gear reducers are analyzed in the following aspects:

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 on both sides of the sealing point, the splashed smooth oil cannot flow in time after passing through the bearing. Back to the lower housing of the reducer, the oil is collected between the bearing and the end cover, and the shaft is in a rolling condition. After long-term use, the seal between the lower housing and the end cover is not very tight, forming the oil warp shaft surface and the end cover The groove leaks outward.

2. The sealing of the contact surface of the upper and lower shells of the worm gear reducer is the primary static sealing point of the reducer. The lack of smoothness of the contact surface, the deformation of the upper and lower cover steel plates and the loose tightening of the bolts will also cause smooth oil leakage.

3. With the extension of the use time, the oil seal of the reducer is aging, and the shaft head is worn out and faulty, which often causes the smooth oil leakage of the input and output shaft of the reducer. In addition, the aging of the skeleton seal ring also caused oil leakage in the reducer head.

At first, we always thought that the oil leakage was caused by the quality question of the steel frame seal ring or the heavy load, but after several times of replacement, the effect was still not safe. In the end, we read a lot of materials and after careful analysis, input the original reducer The oil baffle ring on the end shaft consists of a double-row oil baffle ring and a split type. This can stop the oil flowing through the shaft and bearing during the splashing process. In addition, we also dealt with the oil return tank and oil return line, and changed the oil return eye to a countersunk head to facilitate oil return. On the other hand, the oil guide groove is introduced into the chamfer at the lower part of the reducer near the bearing to facilitate the flow into the oil pool. We also looked at the vent holes and expanded the holes of the vent holes to reduce the influence of the oil temperature pressure formed by the oil temperature on the skeleton seal. In addition, we also replaced the skeleton seal ring. After using the results for a period of time, it was found that the effect was excellent, and the oil leakage problem was dealt with, which not only saved manpower and material resources, but also saved money.