This video provides a detailed walkthrough of how a compact hydraulic cylinder is assembled and then pressure tested, showing the precision required at every stage. It begins with the piston rod clamped in a vise, followed by applying thread locker and threading on a brass piston. A locating pin is inserted, and black seals, a red seal, and a black backup ring are fitted into the piston grooves. The barrel threads are greased, and the piston rod assembly is inserted vertically and tapped home with a copper mallet. A brass guide end cap is slipped over the rod and seated on the barrel, along with a dust seal and a lateral sealing strip. Yellow port plugs are added, and the cylinder is mounted on its base with four hex bolts.
After assembly, the unit undergoes hydraulic testing: pressure parameters are set, lines are connected, the stroke is measured with a ruler, and magnetic sensing is checked. This completes the factory pressure test. The process addresses a key challenge: ensuring leak-free sealing, accurate stroke, and reliable magnetic feedback in a space saving design. It is especially valuable for procurement engineers, design teams, and maintenance planners sourcing compact hydraulic cylinders for robotics, medical equipment, automated fixtures, and aerospace applications.
