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to understand this answer we have to assume the following as givin fact. fluids do not compress, that out of the way, the hydraulic piston you push is a smaller diameter than the piston that does the work. for example lets say that you are using a 1 square inch piston as the one you are pressing, and you are using a 100 square inch piston as the one doing work. these numbers are greatly exaggerated but will work for the example if you put 10 pounds of pressure on the 1 inch cylinder, you will have 10 psi of pressure. when this is routed to the 100 square inch cylinder you will still have 10 psi of pressure, but now it is acting on 100 square inches (10 pounds per square inch times 100 square inches) this would calculate to 1000 pounds. it would be the same as a 1001 inch lever with the fulcrum being 1 inch in from one end, only you would exert force on the larger lever to gain a mechanical advantage. hydraulics used in this way are known as liquid levers

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Q: How does hydraulic pressure create a mechanical advantage in a simple hydraulic jack?
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How are a hydraulic motor and hydraulic pump similar?

Hydraulic motors and hydraulic pumps are both components commonly used in hydraulic systems, and while they serve different functions, they share several similarities: Both are Hydraulic Components: Hydraulic motors and hydraulic pumps are both integral parts of hydraulic systems, which utilize pressurized fluid (usually oil) to transmit power. Both Convert Energy: While they convert energy in different ways, both hydraulic motors and pumps are involved in the conversion of mechanical energy to hydraulic energy or vice versa: Hydraulic pumps convert mechanical energy (often from an electric motor or an engine) into hydraulic energy by pressurizing fluid and creating flow. Hydraulic motors, on the other hand, convert hydraulic energy from pressurized fluid into mechanical energy, which can then be used to drive machinery or perform work. Both Operate via Fluid Flow: Both hydraulic motors and pumps operate by controlling the flow of hydraulic fluid. Hydraulic pumps create flow by drawing fluid into the pump and then pressurizing it, while hydraulic motors use the pressure of the fluid to generate rotational motion. Both Have Inlet and Outlet Ports: Hydraulic motors and pumps typically have inlet and outlet ports for fluid to enter and exit the component. In pumps, fluid enters through the inlet port and exits through the outlet port, while in motors, fluid enters through the inlet port to create motion and exits through the outlet port. Both Utilize Seals and Bearings: Both hydraulic motors and pumps often contain seals and bearings to prevent leakage and reduce friction, ensuring efficient operation and prolonging the lifespan of the components. Despite these similarities, it's important to note that hydraulic motors and pumps serve different purposes within a hydraulic system and operate in different ways to fulfill those purposes. While pumps are primarily responsible for generating flow and pressure, motors are designed to convert hydraulic energy into mechanical motion.


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What is hydraulic press?

Short Answer:A hydraulic press is a means of generating mechanical advantage by using a fluid and two different sized pistons. Hydraulic presses can be used for a lot of things. In a shop it is often used to press metal pins into holes or bearings into housings so that metal parts can be made to stay together without fasteners or threads. In a lab hydraulic presses are often used to compress powders into solid cylinders or tablets. Sticks of chalk used on blackboards are made this way as well as aspirin tablets and other common products. Hydraulic presses can be run manually using the power of someone's arm or they can use an electric pump to create the necessary pressure in the hydraulic fluid.How it works:If I have a piston that is three inches in diameter sitting in a cylinder and I pump fluid in the bottom of it that piston will rise and lift whatever is above it such as a 2000 pound car. The pressure of the 2000 pound car on a three inch diameter piston produces about 261 pounds per square inch of pressure in the fluid below the piston.Piston Area = Pi*r^2 = 3.14 * 1.5 * 1.5 = 7.65 square inchesPressure = Force / Area = 2000 pounds / 7.65 square inches = 261 pounds per square inchIf I have a pump with a piston that is only 0.25 inches in diameter (area = 3.14 * 0.125^2 = 0.049 square inches) I only need to push on it with about 98 lbs to lift a 2000 lb car.This works out to about a 20:1 mechanical advantage. The downside is that for every inch I want to raise the car I have to push the small piston in about 20 inches. This is how a hydraulic jack or "bottle jack" you'd find in a garage works.A practical jack or hydraulic press would have three valves and a fluid reservoir in addition to the pump and lifting piston. The pump would push fluid through a check valve, which only allows fluid to through one way, into the lifting piston cylinder causing it to rise when the handle is pressed down. When the handle is lifted the pump would suck fluid from the reservoir through another check valve. This lets you move the pump back and forth to get 20 inches or more of motion without having a 20 inch long pump piston. The third valve would let the pressurized fluid back into the reservoir when you wanted to lower the car. The reservoir would not be pressurized.


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Hydraulic motors and hydraulic pumps are both components commonly used in hydraulic systems, and while they serve different functions, they share several similarities: Both are Hydraulic Components: Hydraulic motors and hydraulic pumps are both integral parts of hydraulic systems, which utilize pressurized fluid (usually oil) to transmit power. Both Convert Energy: While they convert energy in different ways, both hydraulic motors and pumps are involved in the conversion of mechanical energy to hydraulic energy or vice versa: Hydraulic pumps convert mechanical energy (often from an electric motor or an engine) into hydraulic energy by pressurizing fluid and creating flow. Hydraulic motors, on the other hand, convert hydraulic energy from pressurized fluid into mechanical energy, which can then be used to drive machinery or perform work. Both Operate via Fluid Flow: Both hydraulic motors and pumps operate by controlling the flow of hydraulic fluid. Hydraulic pumps create flow by drawing fluid into the pump and then pressurizing it, while hydraulic motors use the pressure of the fluid to generate rotational motion. Both Have Inlet and Outlet Ports: Hydraulic motors and pumps typically have inlet and outlet ports for fluid to enter and exit the component. In pumps, fluid enters through the inlet port and exits through the outlet port, while in motors, fluid enters through the inlet port to create motion and exits through the outlet port. Both Utilize Seals and Bearings: Both hydraulic motors and pumps often contain seals and bearings to prevent leakage and reduce friction, ensuring efficient operation and prolonging the lifespan of the components. Despite these similarities, it's important to note that hydraulic motors and pumps serve different purposes within a hydraulic system and operate in different ways to fulfill those purposes. While pumps are primarily responsible for generating flow and pressure, motors are designed to convert hydraulic energy into mechanical motion.


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