Axial Piston Pump
The Type V40M-028H axial piston pump is suitable for hydraulic fan controls in mobile machines. The pump will displace volumes up to 28 cm3/rev and is designed …
When to Replace a Pump
A frequent question in fluid power is “When should I replace my pump?” The answer is “It depends.” It depends on a multitude of factors, conditions, …
Vacuum Valves
Click images to enlarge The most common form of vacuum generation is a vacuum venturi, often referred to as a “vacuum pump.” This can be misleading because …
Pump or Venturi?
When a salesperson is quoting a vacuum installation, a common question to the end user is, “Would you prefer a vacuum pump or venturi?” More often …
Mid-Pressure Range Pump
The V40M axial piston pump has been designed for open circuits in mobile machines and has a displacement volume of 2.75 in.3/rev. Its swash plate design allows …
Energy-Efficient Hydraulics: Variable Frequency Drives as Pump Prime Movers
It is obvious what we want to achieve with variable speed pumps: to save energy and reduce noise and possibly increase the power density of hydraulics. To …
Analysis of a Hydraulic Oil Failure
I recently conducted failure analysis and a reliability audit on a 300-kilowatt (400-hp) hydrostatic transmission. This hydraulic system was running a …
Spur Gear Pump Displacement
So you need to replace an unlabeled external gear pump originally sold by Cro-Magnon Hydraulics during the First Crusades, and sadly you have no idea of the …
Advanced Pump Control for Energy Savings in Intermittent Hydraulic Systems
Many hydraulic systems are only required to deliver flow at pressure during certain stages in a machine cycle. This is even more prevalent in the theme park …
Hydraulic Pumps and Motors: Considering Efficiency
In a condition-based maintenance environment, the decision to change out a hydraulic pump or motor is usually based on either remaining bearing life or …
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