What type of lubricating grease should be used on pump ball bearings exposed to water washing?

Using lithium soap base grease for pump ball bearings that are exposed to water washing is advisable due to its excellent water resistance properties. Lithium-based greases have a higher temperature tolerance and perform well in environments with some moisture, providing adequate protection against corrosion. This type of grease maintains its consistency and effectiveness in the presence of water, which helps ensure that the bearings continue to operate smoothly and are protected from wear and damage caused by moisture.

Other types of greases, such as those with white lead base or red lead base, are not suitable for this application due to potential toxicity and poor performance in wet conditions. Sodium soap base greases tend to have limited water resistance and can wash out easily when exposed to water, making them inadequate for lubricating applications where water exposure is a factor. Thus, lithium soap base grease is the preferred choice for pump ball bearings in water-washing environments due to its durability and protective properties.