For truck-mounted hydraulic systems, the most typical design in use is the Gear Pump china equipment pump. This design can be characterized as having fewer moving parts, being easy to program, more tolerant of contamination than other designs and relatively inexpensive. Gear pumps are set displacement, also known as positive displacement, pumps. This means the same volume of stream is created with each rotation of the pump's shaft. Gear pumps are rated with regards to the pump's optimum pressure rating, cubic ” displacement and maximum input speed limitation.
Generally, gear pumps are found in open center hydraulic systems. Gear pumps trap oil in the areas between your teeth of the pump's two gears and 
your body of the pump, transport it around the circumference of the gear cavity and then pressure it through the wall plug slot as the gears mesh. Behind the brass alloy thrust plates, or use plates, a small amount of pressurized essential oil pushes the plates tightly against the apparatus ends to boost pump efficiency.
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