Gear pumps primarily lubricate themselves using the fluid they are pumping.
Self-Lubrication Mechanism
Gear pumps are inherently designed to be self-lubricating. This crucial function is performed by the very medium they move. As the fluid they pump also lubricates the pump's internal parts, the gears and other moving components within the pump benefit from a continuous film of the process fluid.
This self-lubricating property is vital for the pump's operation and longevity. The fluid flowing through the pump's chamber passes between the meshing gear teeth and the pump housing, providing lubrication to reduce friction between these surfaces.
The Importance of Fluid Presence
It is critical that gear pumps do not operate without fluid. According to the provided information: "Most gear pumps should not be operated dry for extended periods, as this will most likely lead to damage of the pump components due to friction/heat."
Operating a gear pump without adequate fluid flow (known as running dry) eliminates the source of lubrication. This lack of lubrication causes:
- Increased friction between moving parts.
- Rapid generation of heat.
- Potential wear and damage to components like gears and bearings.
Therefore, ensuring a constant supply of fluid is not just about the pumping function but is essential for the pump's self-lubrication and protection against mechanical failure.
