Which hydraulic pump is selected determines how long a system will last and how well it will perform. There is a wide range of hydraulic pump designs available. In this article, we’ll discuss which pumps work best in various setups. Most commonly found are hydraulic pumps that use gears, pistons, and vanes. Choosing a pump can be tricky, so it’s always best to double-check with the maker to ensure you’ve got the right one.
Compared to the other three primary categories, this one has the simplest design. Gears that either mesh or rotate in sequence propel the fluid forward. Each motorcycle acts as a “positive-displacement pump,” displacing a fixed amount of fluid. Low-pressure, high-throughput operations are possible with fixed-displacement pumps.
Gear pumps tend to last longer than other types of pumps since there are fewer moving parts. They are resistant to pollutants and require little maintenance or servicing. Moreover, they are cheap. Gear pumps are ideally suited for high-pressure production systems. The pump’s output is relatively insensitive to changes in pressure, making it a good choice for projects that must work with unreliable resources.
There are two main types of piston pumps:
- Radial: Pistons are arranged in a circle around the driveshaft. When a lot of force is needed, radial piston pumps shine.
- Axial: Pistons housed in a cylinder are driven by a swashplate that tilts in response to the rotation of the input shaft.
Piston pumps are commonly used for high operating pressure systems. A piston pump may withstand higher pressures while keeping the same displacement as a gear pump.
Piston pumps have a few drawbacks, including a higher initial investment, stricter filtration standards, and more complex servicing and maintenance. They are more efficient than gear pumps despite having more moving parts and are less likely to become contaminated.
Vane pumps use a spinning motor with a set of rectangular vanes that slide along the motor shaft in response to a cycloidal cam. As the vanes rotate, they press against the inside of the housing, generating suction. You can choose between fixed and variable vane pumps.
These low-pressure pumps are commonly used in systems that transport fluids with low viscosity, such as propane, solvents, alcohol, and refrigerants. The three most common varieties of vane pumps are as follows:
External – big solids can be handled
Flexible – produces a fantastic vacuum
Sliding – can be dry for a short period.
Vane pumps are extensively used in aircraft engines for fuel transmission and de-icing. In addition, they contribute to the automotive industry. Out of the three pump types compared here, vane pumps produce the least amount of noise.
Important Factors to Think About When Choosing a Pump
Customers in the market for a new or replacement pump may feel overwhelmed by the technical terms and variety of options available. If you need some help deciding which pump is best for your job, we’ve compiled a short checklist of the five most important factors to think about.
- Superior System Pressure
- Efficiency criteria
- Speed specifications
- Closed or open circuits
- Reduced background noise.
Now that you know what kinds of hydraulic pumps are available, you can choose one that is best suited to the task at hand after considering its advantages and disadvantages.