There is always some degree of loss in a hydraulic system, for example due to leakage oil from a hydraulic pump or engine. Loss in a hydraulic system usually translates into heat generation. To capture this heat, one should always ensure that the oil tank is about 2.5 to 3 times the flow delivered.In case the tank cannot be chosen large enough due to lack of space, or if the system is very heavily loaded and used, the heat developed as a result should be dissipated by means of a suitable oil cooler.
In most systems where a cooler is used, it is fitted with a controller and a thermostat. This is to keep the desired temperature as constant as possible.
An oil cooler is thus used to dissipate unwanted and excess heat in a hydraulic system. A cooler in the system brings a few more benefits. The hydraulic components and the oil will have a longer service life because there will be a constant temperature in the system and less condensation in the system. The efficiency of the system will also be more stable because there is less change in the temperature of the components.
If, when building a hydraulic system, you are in doubt about using a cooler, ask whether a tank can be installed that is large enough, as well as how intensively the system will be used.
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