Hydraulic cylinders are a key component of hydraulic systems on modern heavy equipment such as excavators, skid steers and tractors.
The cylinders use principles of fluid mechanics to translate hydrostatic pressure into linear force to power heavy equipment machinery and their attachments.
Typically, a hydraulic cylinder is filled with hydraulic fluid or oil. Inside the cylinder, a piston attached to a piston rod is moved back and forth inside the cylinder as fluid is pumped into and out of the cylinder at either side of the piston.
In turn, the moving piston causes the rod to extend and retract, powering the motion of arms, attachments and other mechanical systems on the machine.
Key to the performance of hydraulic cylinders are hydraulic seals, which are fitted around the piston, rod and other contact points inside the cylinder.
Hydraulic seals keep fluid from leaking out of the cylinder and ensure that excessive hydraulic fluid does not transverse the piston.
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