What type of pump is typically used for lubricating oil?

The use of a rotary pump for lubricating oil is particularly advantageous due to its efficiency in handling viscous fluids. Rotary pumps work by trapping a fixed volume of fluid and then forcing it through the discharge outlet, making them well-suited for applications where consistent flow and pressure are necessary, such as with lubricating oils. These pumps can effectively manage the thick and viscous nature of lubricating oil, ensuring that it circulates properly throughout a system to reduce friction and wear on mechanical components.

Additionally, rotary pumps are known for their ability to provide a steady and continuous flow, which is crucial for maintaining lubrication in machinery, especially in high-performance or high-speed applications. This stability is essential for protecting engine parts and other machinery from damage caused by insufficient lubrication.

In contrast, other types of pumps like centrifugal pumps may not perform as effectively with high-viscosity fluids like oils because they rely on the fluid's velocity and can struggle to move thicker liquids efficiently. Dynamic displacement pumps, while also capable of handling varying fluids, generally aren't the standard choice for lubricating oil specifically. Thus, the rotary pump is the preferred option in this context.