Block-body hydraulic cylinders are linear, single-acting cylinders that provide movement in one direction and have a spring that returns the rod to the starting position. They can be used for push and pull operation. They can be mounted directly to the top or bottom of a fixture and have a compact design that allows them to be installed in confined spaces. Block-body hydraulic cylinders can be used installed in medium-cycle, low- and high-pressure applications such as machining, testing stations, and hydraulic presses.