To size a hydraulic pump/motor, there are many considerations to ensure that it will work efficiently. Here are some of them:
- System Requirements: The first step in selecting the right pump and motor is to reflect on what exactly the hydraulic system needs. This involves flow rate pressure and temperature of operation.
- Pump displacement: At this point, with knowledge of the system requirements we could calculate the pump displacement required for meeting these needs. This is usually expressed as cubic inches per revolution (in3/rev) or milliliters per revolution (ml/rev).
- Pump Flow Rate: The pump flow rate is calculated based on the pump displacement and number of revolutions per minute (RPM). It is measured in gallons per minute (GPM) or liters per minute (LPM).
- Motor Displacement: You should have a motor displacement that matches the pump displacement so that it ensures compatibility between two devices and they function together efficiently.
- Motor Speed: In order to have proper functioning, a motor speed must match that one of a pump; usually denoted by rpm.
- Industry Standards and Guidelines: There are also various industry standards and guidelines which can aid one in picking up a suitable pump/motor combination for any given application. Among others, ISO (International Organization for Standardization) and SAE (Society of Automotive Engineers) stand out most widely recognized global organizations.
Summarily, sizing a hydraulic motor/pump correctly involves considering what the system requires, knowing how much fluid it has to displace and traveling regardless of how far it needs to carry before choosing an engine with matching capacity plus velocity while at some instances; following codes from industries’ authorities may be necessary
