How do you design a hydraulic system? Firstly you need a specification of pressure and flow from a customer or derived from the speed, torque or force required from hydraulic motors or cylinders. Most industrial systems are powered by an electric motor so once the pressure and flow is determined the electric motor power can be calculated.
Next is the selection of the pump, based on the pressure needed, the flow, the fluid type and the control required. The hydraulic reservoir type, size and accessories are then determined.
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The next stage is to decide the valves needed to control the output of the motion in motors or cylinders. How to control the pressure and flow, consistent or changing with proportional valves. Do you need to lock in pressure to hold cylinders in position, then PO check valves or counterbalance valves are required.
Above are the basics but don’t forget test points (always a great addition for fault finding), pressure gauges and other instrumentation which can make the life of the end user easier. Also filtration is required to maintain oil cleanliness, this also helps keep the system reliable.
