For truck-mounted hydraulic systems, the most typical design in use may be the gear pump. This design is usually characterized as having fewer moving parts, being simple to support, 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 level of flow is produced with each rotation of the pump’s shaft. Gear pumps are rated when it comes to the pump’s maximum pressure rating, cubic in . displacement and maximum insight speed limitation.
Generally, gear pumps are used in open center hydraulic 
systems. Gear pumps trap 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 force it through the store Gear Pump china interface as the gears mesh. Behind the brass alloy thrust plates, or wear plates, a little amount of pressurized essential oil pushes the plates tightly against the apparatus ends to improve pump efficiency.