Features of Hydraulic trolley jack

Work is made more accessible in several ways; however, in the world of heavy metals and machines, jacks are pretty popular; jack is a general word for lifting devices; this article focuses explicitly on the features of the hydraulic jack lift which serves several functions from its features.

Jack lifts, in general, use the principle of leverage and mechanical advantage to perform various tasks; the classification of jacks is based on the mechanism of operation, and hydraulic jacks are named based on the principle of the liquid that maintains the hydraulic power that is used to loft and lower objects.

The jack has several components that make it more efficient and preferred for work; below are the critical components of the jack and how it works.

A buffer tank

From the name hydraulic, it means the jack uses an incompressible fluid to operate; the juice is stored somewhere within the device; this vessel holds the liquid, in some cases, jack oil; the tank is linked and attached to the pump through which pressure is transferred to create a mechanical advantage for sourcing power to operate the machine.

A pump (piston)

A pump and for this case referred to as a piston pump, is used to create pressure for operating the machine; the pump is a simple handle that is driven by being shifted up and down; the continuous up and down movement builds tension in the jacking oil in the tank as they are attached and linked. The pressure creates a mechanical advantage, thus energy that propels the machine to lift an object.


The hydraulic trolley jack has two valves that aid its operation, the check valve and the release valve, which perform different functions. This factor helps in facilitating the smooth process of the device. The check valve is a one-way system valve that allows the forward flow of hydraulic fluid and prevents any backflow from protecting the piping system and other valves.

On the other hand, the release valve is critical during offloading; it controls the pressure state by releasing it controllably to lower the object on hold by the jack easily.

Main cylinder

The cylinder performs two critical roles for the device to work efficiently. First, it ensures good forward movement of the machine, the cylinder uses the mechanical advantage created by the pressure due to hydraulic pumping to build an upward force and extend forward, thereby lifting the load to the required height.

During offloading, the cylinder coordinates well with the release valve, through which pressure is controllably released, the central cylinder steadily retracts, and the load is successfully brought down.


The efficiency of hydraulic jacks is pegged on their components, some of which compliments each other during device operation while others operate concurrently. The advantage of having two valves that perform fundamental and crucial functions contributes to its high efficiency as a type of jack lift.

Other critical components of the jack are the main cylinder that coordinates forward and backward movement of the machine during work and hydraulic liquid, incompressible by nature and thus able to control machine pressure. Check also hydraulic jack.

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