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What is the definition of "hydraulic pump"?

AccumulatorHydraulic components used to store hydraulic fluid. Accumulators are designed to increase or relieve pressure in the system.ActuatorThe components such as cylinders, motors, and rotary actuators that directly help convert hydraulic energy into mechanical energy.Air-Cooled Heat ExchangerA component in a hydraulic system that relieves excessive heat with cool air.Air-Operated AccumulatorA component used to store hydraulic fluid. The air-operated accumulator increases and relieves pressure through the use of an inflatable bag. Also called a gas-loaded accumulator.Air-Over-Oil IntensifierA hydraulic component that is powered by compressed air. Compressed air exerts force on a piston, which magnifies pressure as the hydraulic fluid escapes to smaller conductors and actuators.Atmospheric PressureThe weight of the atmosphere. Atmospheric pressure refers to the amount of pressure exerted by the air.Balanced Vane PumpA hydraulic pump that consists of a rotor mounted in the center of an elliptical cavity. As the rotor spins, vanes trap and move hydraulic fluid.Ball ValveA valve that uses a spherical obstruction to stop and start hydraulic flow. A ball valve is usually rotated 90° to open and close.BoosterA hydraulic component that converts low pressure from a large linear actuator into high pressure in a small linear actuator. Also called intensifiers, boosters are usually two different-sized cylinders connected by a common piston.CamA circular component of a piston pump that is mounted off-center and moves pistons when rotated.Centrifugal ForceA force directed outward and away from the center of a rotating object.Check ValveA hydraulic control valve that allows fluid to flow in one direction. Check valves prevent backflow.ConductorThe components such as pipes, tubes, and hoses that convey liquids throughout a hydraulic system.Control ValveMechanisms that control liquids in a hydraulic system. Control valves direct liquid movement and regulate the amount of pressure exerted in a hydraulic system.Corrosion ResistanceThe ability of a hydraulic fluid to resist rust and deterioration within the components of a hydraulic system.Crescent PumpA gear-within-gear pump that consists of an inner gear that is separated from the outer gear by a crescent-shaped component that provides both support and a seal.CylinderA hydraulic actuator that helps convert hydraulic energy into mechanical energy.Dead-Weight AccumulatorA component used to store hydraulic fluid. The dead-weight accumulator increases and relieves pressure through the use of a weighted vertical piston.DemulsibilityThe resistance of a hydraulic fluid to emulsification, or how well a hydraulic fluid resists mixing with water.Dirt ToleranceAn indication of the internal clearance of a hydraulic pump. Pumps with high dirt tolerance have the most clearance, are the least efficient, and allow the most backflow. Pumps with low dirt tolerance have the least amount of clearance, are the most efficient, and allow little to no backflow.Double-Acting CylinderA hydraulic actuator that directs energy in both directions.Drive GearThe gear in a gear pump that is attached to the driving mechanism. The drive gear turns the driven gear.Driven GearThe gear in a gear pump that is rotated by the drive gear.Driving MechanismA component of a gear pump that rotates the driving gear.Flow Control ValveA type of valve consisting of a needle valve and a check valve placed in close proximity in a common body. Flow control valves regulate the flow of hydraulic fluid.Flow DemandThe amount of fluid movement in a hydraulic system that is required to perform a specific job or type of work.Fluid PowerPower derived from the motion and pressure of a fluid, such as water or air. Hydraulics and pneumatics are sources of fluid power.Force MultiplicationThe exponential increase in available power usually associated with tools and power transmission systems.Four-Way Spool ValveA spool valve that allows the reversal of hydraulic fluid flow. A four-way spool valve has five ports.Gas-Loaded AccumulatorA component used to store hydraulic fluid. The gas-loaded accumulator increases and relieves pressure through the use of an inflatable bag. Also called an air-operated accumulator.Gate ValveA valve that either allows or prohibits the flow of hydraulic fluid. The gate valve consists of a plate-like obstruction that is raised and lowered into place to control the flow of hydraulic fluid.GearA circular toothed component that engages, rotates, and transmits power to another circular toothed component when rotated.Gear PumpA hydraulic pump that uses meshed gears that rotate and move liquid through a hydraulic system.Gear-On-Gear PumpA hydraulic pump that creates pressure in a hydraulic system through the interaction of two toothed gears that are located adjacent to one another. One gear rotates and drives the other gear.Gear-Within-Gear PumpA hydraulic pump that creates pressure in a hydraulic system through the interaction of two toothed gears that are located one inside of the other. A gear with external teeth rotates and drives the internal gear.GerotorA gear-within-gear pump that consists of an inner gear with one less tooth than the outer gear.Globe ValveA valve that adjusts the flow of hydraulic fluid between and including fully on and fully off. The globe valve consists of a circular plug and a tapered seat.Heat ExchangerHydraulic components that help relieve the excessive heat that builds up in a hydraulic system.HoseA type of hydraulic fluid conductor that joins other components usually in a non-linear fashion. Hose bends and flexes and is the most versatile hydraulic conductor.Hydraulic FluidA liquid such as oil or water that is used to generate power in a hydraulic system.Hydraulic IntensifierA hydraulic component that converts low pressure from a large linear actuator into high pressure in a small linear actuator. Also called boosters, intensifiers are usually two different-sized cylinders connected by a common piston.Hydraulic MotorA device which converts the energy from liquid flow into mechanical motion. A hydraulic motor is a type of fluid motor.Hydraulic PowerPower derived from the motion and pressure of a liquid, such as water or oil.Hydraulic PumpA mechanical device used to move liquids in a hydraulic system.IntensifierHydraulic components that convert the low pressure from a large linear actuator into high pressure in a small linear actuator. Intensifiers are usually two different-sized cylinders connected by a common piston.Linear ActuatorAn actuator that directs force in a straight line. A cylinder is a linear actuator.LoadThe amount of force or pressure placed on a hydraulic system.LubricityThe property that diminishes friction and increases smoothness and slipperiness.Mechanical AccumulatorA hydraulic component that transfers mechanical energy to trapped fluids. Mechanical accumulators include dead-weight and spring-loaded accumulators.Mechanical PowerEnergy created by the physical interaction of instruments or tools.Needle ValveA valve that adjusts the flow of hydraulic fluid between and including fully on and fully off. The needle valve consists of a sharp conical obstruction that is extended or retracted to block or allow flow.Non-Petroleum-Based OilA hydraulic fluid that contains no petroleum. Non-petroleum based oils are ideal for hydraulic systems that are used near a fire hazard.Petroleum-Based OilA hydraulic fluid developed from petroleum. Petroleum-based oils are the most common hydraulic fluids.PipeA type of hydraulic fluid conductor that joins other components usually in a straight line and on a permanent basis.PistonA rod inside a cylinder that is moved by hydraulic pressure.Piston BarrelA rotating cylindrical mechanism that houses the pistons in a piston pump.Piston PumpA hydraulic pump that uses pistons driven by a rotating swash plate or cam to move fluid through a hydraulic system.Piston ShoeThe swiveling end portion of a piston that maintains contact with the swash plate in a piston pump.Positive-Displacement PumpA hydraulic pump that continues to discharge fluid as long as it is powered.Pounds Per Square InchA unit of pressure that measures the amount of load pressure per inch. Pounds per square inch is abbreviated psi.Pressure Control ValveAn adjustable control valve that regulates pressure in a hydraulic system.Pressure-Relief ValveA non-adjustable control valve that regulates pressure in a hydraulic system.Prime MoverThe component of a hydraulic system that powers the main pump.PumpA mechanical device used to move liquids and gases.Rack-And-Pinion ActuatorA hydraulic rotary actuator that directs energy in a circular motion through the use of a toothed piston that turns a toothed gear.Ratio-Of-Areas PrincipleA physical law governing hydraulic intensifiers stating that a given pressure in a larger cylinder can be intensified by the same pressure exerted in a smaller cylinder. In general, the ratio of areas is inversely proportioned to the ratio of pressures, meaning the larger area has a smaller pressure and the smaller area has a larger pressure.Reciprocating MotionMovement characterized by repeatable back-and-forth action.Reducing ValveAn adjustable control valve that regulates pressure in a particular zone of a hydraulic system.Relief ValveA non-adjustable control valve that regulates pressure in a hydraulic system. When a critical pressure is exceeded, the relief valve releases.Revolutions Per MinuteRPM. A unit of measurement that indicates the number of revolutions a pump component makes in one minute.Rotary ActuatorAn actuator that directs force in a circular motion.Sequence ValveA control valve that allows hydraulic fluid to flow into another area of the system once a critical pressure has been achieved.Shock LoadSudden extreme pressure increases within a hydraulic system.Single-Acting CylinderA hydraulic actuator that directs energy in one direction.Spool ValveA valve that controls the direction of hydraulic fluid flow. A spool valve consists of cylindrical spools that alternately block and open channels in the hydraulic system.Spring-Loaded AccumulatorA component used to store hydraulic fluid. The spring-loaded accumulator increases and relieves pressure through the use of a spring-loaded piston.Swash PlateA flat, angled component of a piston pump that moves the pistons when rotated.Three-Way Spool ValveA spool valve with three ports.TorqueThe force exerted in rotation.TubingA type of hydraulic fluid conductor that joins other components usually in a non-linear fashion. Despite being stronger than pipe, tubing is easily bent.Unbalanced Vane PumpA hydraulic pump that consists of a rotor mounted off-center in a circular cavity. As the rotor spins, vanes trap and move hydraulic fluid.VacuumThe state of negative pressure. A hydraulic pump works by creating a vacuum in the closed hydraulic system.VaneA retractable spring-loaded mechanism that extends radially from the center of a pump rotor.Vane ActuatorA hydraulic rotary actuator that directs energy in a circular motion through the use of a pivoting mechanism.Vane PumpA hydraulic pump that uses a flat protrusion to trap and move liquid through a hydraulic system.Variable-Displacement PumpA hydraulic pump that can be adjusted to increase or decreases the amount of liquid that is moved in one pump cycle.ViscosityA hydraulic fluid's resistance to flow. As temperature increases, viscosity decreases.Water-Cooled Heat ExchangerA component in a hydraulic system that relieves excessive heat with cold water.WorkThe result of force applied to an object over a distance.

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