1. During the operation of the geared motor, due to the friction and heat generated by the movement pair and the influence of the ambient temperature, the temperature of the reducer will increase. If there is no vent or the vent is blocked, the pressure inside the machine will gradually increase, and the higher the temperature inside the machine will be, The greater the pressure difference with the outside world, the lubricating oil will leak from the gap under the action of the pressure difference;
2. There is no oil return groove on the box body, and the lubricating oil accumulates in the shaft seal, end cover, joint surface, etc., and leaks from the gap under the pressure difference;
3. If the contact between the journal and the seal is not ideal, the seal will fail in a short time due to the extremely poor compensation performance of the felt.Although there is an oil return hole on the oil ditch, it is very easy to be blocked and the oil return effect is difficult to play.
4. Too much lubrication: During the operation of the reducer, the oil pool is greatly agitated, and the lubricating oil splashes everywhere in the machine. If the lubrication is too much, a large amount of lubricating oil will accumulate on the shaft seal, joint surface, etc. Cause a leak.
5. Improper maintenance process: During equipment maintenance, due to incomplete removal of dirt on the joint surface, improper selection of sealant, reverse installation of the seal, and failure to replace the seal in time, it may also cause oil leakage.
