For truck-mounted hydraulic systems, the most common design in use may be the equipment pump. This design is characterized as Gear Pump china having fewer moving parts, being easy to service, more tolerant of contamination than additional designs and fairly inexpensive. Gear pumps are fixed displacement, also called positive displacement, pumps. This implies the same level of stream is produced with each rotation of the pump’s shaft. Gear pumps are rated in conditions of 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 
essential oil in the areas between your the teeth of the pump’s two gears and the body of the pump, transportation it around the circumference of the gear cavity and then drive it through the store port as the gears mesh. Behind the brass alloy thrust plates, or wear plates, a little amount of pressurized oil pushes the plates tightly against the gear ends to boost pump efficiency.