Hydraulic Lift Parts

• One of the most common hydraulic machines is the hydraulic lift. It is used to lift cars, trucks and heavy machinery. A hydraulic lift is made out of a pump, a lift cylinder, a hydraulic fluid reservoir and valves placed between each of the components. Oil is most often used as a hydraulic fluid because it in incompressible and transmits forces without loss.
  
  

Hydraulic Lift Functioning

• The pump pushes hydraulic fluid into the lift cylinder on the downstroke and draws hydraulic fluid out of the reservoir on the upstroke. The different valves open in close in harmony with the action of the pump to allow the hydraulic fluid to flow in the right directions at the right times.
  
  

Increased Force

• As fluid is forced into the lift cylinder it forces the lift piston upward. The lift cylinder is a lot wider than the pump cylinder. This means that the area of the lift piston is a lot greater than the area of the pump piston. Because Pascal's Principle guarantees that the pressure in a fluid is the same everywhere and the area that pressure is applied over is greater at the lift cylinder, the force applied by the lift cylinder must be greater. The hydraulic lift takes the long low-force motions of the pump piston and converts then into short high-force motions of the lift cylinder.
  
  

Hydraulic Brake System Parts

• A hydraulic brake system is a system of multiple pistons. An input system with a plunger attached to the brake pedal is connected, by flexible tubing, to two or four other cylinders in the wheels. Each of these other cylinders has two pistons that push out toward the rims of the wheels. These cylinders are all filled with hydraulic fluid.
  
  

Hydraulic Brake System Functioning

• When the brake pedal is pressed, it moves a little way into the input cylinder, compressing the hydraulic fluid. This increased pressure is transmitted to all of the other cylinders by Pascal's Principle. The pistons in the wheels are pressed outward, moving the brake shoes at their ends. They do not move as far as the brake pedal itself, but they do not need to move far at all before dragging against the brake drum, slowing the wheels.
  
  

Hydraulic Lift Vs Hydraulic Brakes

• The hydraulic lift and the hydraulic brake are virtually the same machine. Both of them use some means of applying pressure to a hydraulic fluid that forces a piston or pistons elsewhere to move outward with greater force. There are only two differences between the hydraulic lift and the hydraulic brake. One is that all the push is delivered by one cylinder in a lift and by either two or four cylinders in a brake system. The other difference is that in a hydraulic lift the pump moves the lift piston out in a series of movements while in a brake system the brake pedal moves the brake pistons out in one short movement.