Which type of elevator uses a hydraulic cylinder to move the cab?

Hydraulic elevators utilize a hydraulic cylinder to elevate and lower the cab. This system operates by pressurizing hydraulic fluid, which moves the piston contained within the cylinder. As the fluid is pumped in, the piston ascends, raising the elevator cab. When the fluid is released, gravity causes the piston to descend, lowering the cab back down.

This type of elevator is particularly well-suited for low-rise buildings, typically serving up to about six stories, as they are efficient for these heights and require less complex infrastructure than other systems. Additionally, hydraulic elevators do not rely on cables or pulleys for movement, distinguishing them from traction and cable-operated elevators, which use a different mechanism entirely for operation.