Hydraulic Trolley Jack

trolley jack (plural trolley jacks) A hydraulic jack (lifting device) mounted on wheels, and equipped with a long handle which also acts as a pump handle, which can be pulled to wherever it is needed.These jacks use the power of hydraulic fluid or oil to move or lift heavy loads. The main mechanism of applying force differs from the jack type used, but it generally relies on a hydraulic cylinder or a screw thread. Typically, hydraulic jacks have two cylinders of different sizes that are connected with a pipe.04-Mar-2022