These pumps operate with two engaged gears that rotate to feed hydraulic fluid from a suction area to a discharge area. They all have fixed displacement capacities. They are categorised into external and internal types.

The advantages of gear pumps include:

• There’s minimal discharge pulsation
• They’re more quiet than other pump types
• They’re relatively resistant to contamination
• They’re easy to construct
• They have a high level of system operation efficiency.

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