A hydraulic floor jack is a type of jack used for lifting heavy objects, typically vehicles, off the ground for maintenance or repair work. It is commonly used in automotive applications, such as changing tires, performing brake repairs, or working on the suspension system.
Hydraulic floor jacks work by using hydraulic pressure to lift a load. They consist of a metal frame with a long handle for pumping, a lifting arm with a lifting pad or saddle, and a hydraulic cylinder that contains oil and a piston. When the handle is pumped, it operates a pump plunger that creates pressure in the hydraulic cylinder, which in turn lifts the piston, the lifting arm, and the load.