For truck-mounted hydraulic systems, the most common design in use is the equipment pump. This design is characterized as having fewer moving parts, being easy to Gear Pump china assistance, more tolerant of contamination than various other designs and relatively inexpensive. Gear pumps are set displacement, also called positive displacement, pumps. This implies the same volume of flow is produced with each rotation of the pump’s shaft. Gear pumps are rated in terms of the pump’s maximum pressure rating, cubic in . 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 the tooth 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 slot as the gears mesh. Behind the brass alloy thrust plates, or wear plates, a small amount of pressurized essential oil pushes the plates tightly against the apparatus ends to boost pump efficiency.