11/28/2023 0 Comments Inpro bearing isolator catalogThe thinking is that if leakage occurs, there will be extra lubricant available. It has become common practice for maintenance professionals to fi ll up to, if not a bit over, the maximum fill line. It seems simple, but the greatest cause of Bearing Isolator leakage on process pumps is an over-filled bearing housing. Though true for contact seals, the presence of leaking oil from a Bearing Isolator is most likely due to factors other than seal failure.įollowing are some of the more common causes of Bearing Isolator lubricant leakage in process pumps. For most operators, the analysis is simple: no leaking oil means the seal is fine while leaking oil equates to failure. The most common perception of bearing housing seal failure on process pumps is lubricating oil leaking from the bearing housing. This increases mean time between repair (MTBR). Inpro/Seal Bearing Isolators effectively retain lubricants and exclude contaminants while providing a virtually infi nite life expectancy. When this occurs, lubricant will escape to atmosphere and contaminants will enter the bearing housing, leading to bearing failure. Because contact seals use contact as their sealing method, they have a more limited life expectancy, since they can wear at the point of contact or groove the shaft. Look out for these common pitfalls, and don’t assume that a lubrication leak means seal failure.Ī well-known technique for increasing pump reliability is sealing the bearing housing with permanent non-contacting Inpro/Seal Bearing Isolators rather than contact seals.
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