Reducer Leakage Reasons

Reducer Leakage Reasons


Reducer Structure
1. Pressure difference inside and outside reducer
During reducer operation, movement friction produce heat and affected by the ambient temperature, which makes reducer temperature rise, if no air holes or holes clogged, then pressure inside the machine gradually increased, the higher the internal temperature and the greater the pressure difference with outside, lubricating oil leakage from the gap under the action of pressure difference.
2. Unreasonable design of reducer
1) Manhole cover is too thin, easy to deformation after tightening bolts, so that combined surface is uneven, the oil leakage from the contact gap;
2) During gear manufacturing process, the casting part is not for annealing or aging treatment, internal stress is not eliminate, inevitable deformation occurs, resulting in gap and leakage;
3) There is no oil-returning slot, lubricating oil accumulated in the seal, cover, combined surface, etc., under the pressure differential, oil leak out from the gap;
4) Seal design is unreasonable. Early reducer usually use oil groove, and felt ring type seal structure, so that when assembly felt is deformed by compressed, and sealed the combined surface cracks. If the shaft neck contact with the seal is not very satisfactory, due to compensation for the performance of blankets is very poor, the seal will lapse in short time. Although there has fuel return hole on the oil groove, bit is easy to be clogged, oil return effect is difficult to play.
3. Excessive amount of fuel
During reducer operation, the oil tank is stirring up badly, lubricating oil splashing around in the machine, if excessive amount of fuel, lubricating oil accumulate large numbers in seals and the joint surface, etc., resulting in leakage.
4. Improper maintenance process
When equipment maintenance, due to the dirt removal of joint surface is not complete, or improper selection sealant, seals installed backwards direction, replacement of seals not timely, etc. can also cause oil leakage.


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