Pump Leakage Constant and Volumetric Efficiency

Rexroth A2VSL1000 hydraulic pumpThe hydraulic pump is the hardest working component of a hydraulic system. And as the pump wears in service, internal leakage increases and therefore the percentage of output flow available to do useful work (volumetric efficiency) decreases. If volumetric efficiency falls below a level considered acceptable for the application, the pump will need to be changed-out. In a condition-based maintenance … Read more

5 Things You Must Tell a Hydraulic Machine Supplier

big question markWhen buying a piece of hydraulic equipment, there are 5 things about the environment the machine will operate in, that you should always disclose to the equipment supplier or designer–even if they don’t ask. Especially if they don’t ask:

1. Minimum and maximum ambient temperature. This information is necessary to determine the correct hydraulic fluid type, viscosity grade and … Read more

How to Know When NOT to Use Fluid Power

hydraulic efficiencyIn the current inflationary environment, the debate concerning peak oil (the end of cheap mineral oil) and global warming (the end of the planet as we know it) have been somewhat sidelined.

But these two major issues have not gone away. And they will almost certainly influence the source and cost of our energy needs for some time to come.… Read more