A hydraulic pump is a mechanical device designed to generate fluid flow and pressure within a hydraulic system. It converts mechanical power, typically from an electric motor or engine, into hydraulic energy by pressurizing hydraulic fluid. This pressurized fluid can then be used to transmit power or perform work within the system, such as actuating hydraulic cylinders, driving hydraulic motors, or powering hydraulic tools. Hydraulic pumps come in various types, including gear pumps, vane pumps, piston pumps, and axial pumps, each with specific performance characteristics suited to different applications and operating conditions.