RV reducer leaks oil: in order to improve efficiency, the worm gear reducer generally uses non-ferrous metal as the worm gear, and the worm is made of hard steel. As it is a sliding friction drive, it will generate high heat during operation, which will cause differences in thermal expansion between parts and seals of the RV reducer, resulting in gaps on various mating surfaces. As the temperature rises, the oil becomes thinner, which is easy to cause leakage.
The main reasons are as follows: first, whether the materials of RV reducer are properly matched; second, the surface quality of the meshing friction surface; third, whether the lubricating oil is selected and added correctly; fourth, the assembly quality and use environment of RV reducer.
Solution: ensure the assembly quality. In order to ensure the assembly quality, the factory has purchased and self-made some special tools. When disassembling and installing RV reducer worm gear, worm, bearing, gear and other components, try to avoid using hammers and other tools to directly knock; When replacing gears and worm gears, try to use original accessories and replace them in pairs; Pay attention to the tolerance fit when assembling the output shaft.
In addition, during daily use, the following reasons are also likely to cause oil leakage of RV reducer.
1. During equipment maintenance, oil leakage is caused due to improper cleaning of dirt on the joint surface or improper selection of sealing materials.
2. During the operation, the oil tank stirred violently, and the lubricating oil splashed all parts of the machine. If there was too much fuel, a large amount of lubricating oil accumulated on the shaft seal and joint surface, causing leakage.
3. Unreasonable design of reducer structure
1) Check that the well cover plate is too thin, and it is easy to deform after tightening the bolts, which makes the joint surface uneven and oil leakage contact clearance;
2) There is no oil return from the oil tank. The lubricating oil accumulates on the shaft seal, end cover, joint surface, etc., and the clearance leaks under the differential pressure;
3) The structural design of the shaft seal of RV reducer is unreasonable. In the early stage, the oil groove was used. When the saw ring shaft seal structure was assembled, if the contact between the journal and the shaft seal was not ideal, the felt pressure seal failed in a very short time. Because there was an oil return hole in the groove, it was easy to block.