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A gear pump, also known as a screw pump, is a mechanical device that transfers fluids by conveying them through interlocking gears or screws within the pump chamber. The motion of these gears or screws creates positive displacement, which ensures consistent fluid flow and pressure throughout the system. Gear pumps are commonly used in various applications, including hydraulic systems, fuel systems, and lubrication systems, due to their reliability, durability, and low maintenance requirements.