What can result from over-lubricating the bearings of horizontal centrifugal pumps?

Over-lubricating the bearings of horizontal centrifugal pumps can lead to damage to the shaft or shaft sleeve. When excessive lubrication is applied, it creates an environment where the lubricant can become pressurized. This pressure can cause the lubricant to push into areas where it shouldn't be, potentially leading to oil leaks and creating a situation where the lubricant can actually interfere with the operation of the components.

Additionally, over-lubrication can lead to increased temperatures due to the buildup of grease or oil, which can ultimately cause the seal or the bearing surfaces to degrade. In turn, this can result in misalignment or excessive wear on the shaft or sleeve, leading to failure and costly repairs.

It is important to maintain the proper lubrication levels in pumps to ensure optimal performance and longevity of the equipment.