• Many kinds of farm equipment have hydraulic systems.Lisa Kyle Young/Photodisc/Getty Images
  
  Hydraulic systems require high-pressure liquid power to operate. The liquid must be in a pure state; therefore, hydraulic liquid has to pass through an oil purification system to remove any contaminants. Many cylinders and motors move the liquid through the tubes, hoses and valves. You can find a variety of machinery and equipment that use hydraulic systems to work.
  
  

Fork Lift

• Fork lifts run via hydraulic systems. The heavy machines are industrial trucks for transporting and lifting materials. Typically, fork lifts move pallets in distribution centers and warehouses. The forklift mast assists in moving the machine up and down. Hydraulic cylinders operate the mast of the forklift.
  
  

Backhoe

• Hydraulics make up some of the components of a backhoe. A tractor backhoe, also referred to as a digger, is excavating machinery. The equipment features a two-part articulating arm with a thumb attachment at the end that picks up materials, such as dirt. The movable arm-and-thumb attachment utilizes a hydraulic system that helps move the unit accurately.
  
  

Sport Utility Vehicles

• The Environmental Protection Agency introduced the first sport utility vehicle with a full-size hydraulic powertrain, which the EPA patented. The agency boasts the system will increase the fuel economy and will reduce wear and tear on the brakes. The chief benefit of a hydraulic hybrid vehicle is the ability to capture and use a large percentage of the energy normally lost in vehicle braking, the EPA claims.