If the pump bearings on horizontal centrifugal pumps are over lubricated, what may occur?

Over-lubrication of pump bearings in horizontal centrifugal pumps can lead to overheating and potential failure. This situation arises because excessive lubricant can create increased friction, reduce heat dissipation, and introduce a buildup of heat within the bearing housing. Unlike optimal lubrication, which ensures proper functioning and cooling, too much lubricant can also cause the oil to foam, impairing its ability to adequately lubricate the components. As temperatures rise, it may lead to the breakdown of the lubricant and damage to the bearings, resulting in premature failure and costly repairs.

In summary, while proper lubrication is essential for bearing life and pump efficiency, over-lubrication detracts from these benefits and can significantly disrupt pump operations.